# Uplift

## Docs

- [Create Athlete](https://docs.uplift.ai/api-reference/athletes/create.md): Creates a new athlete within an organization. The user must provide at least the `first_name` field. Other standard attributes, while optional, are recommended. Any additional attributes that are not part of the predefined standard attributes should be included as `custom_attributes`.
- [Delete Athlete](https://docs.uplift.ai/api-reference/athletes/delete.md): Delete an athlete and all associated data in an organization.
- [Get Athlete Details](https://docs.uplift.ai/api-reference/athletes/get.md): Retrieves the information of an athlete in an organization.
- [List Athletes](https://docs.uplift.ai/api-reference/athletes/list.md): Retrieves the information of athletes in an organization.
- [Update Athlete](https://docs.uplift.ai/api-reference/athletes/update.md): Use this endpoint to update an athlete's attributes. You can modify all attributes, following specific rules for certain fields and custom attributes. Include only the attributes you wish to update or new custom attributes to add in the request body.
- [Authentication](https://docs.uplift.ai/api-reference/authentication.md): Learn how to obtain and use authentication credentials for the Uplift API.
- [Create Export Job](https://docs.uplift.ai/api-reference/data/export/create.md): Initiates an asynchronous data export process and returns a job ID that clients can use to poll for query results.
- [Get Job Status](https://docs.uplift.ai/api-reference/data/export/job/get.md): Retrieves the details and status of a job using the job ID.
- [Get Job Results](https://docs.uplift.ai/api-reference/data/export/job/results/get.md): Retrieves the results of a completed job using the job ID.
- [Errors](https://docs.uplift.ai/api-reference/errors.md): HTTP status codes and what they mean when using the Uplift API.
- [Filtering Athletes](https://docs.uplift.ai/api-reference/filtering-athletes.md): Learn how to use custom query parameters to filter API results based on specific attributes, and understand the expected behavior of the output.
- [Filtering Metrics](https://docs.uplift.ai/api-reference/filtering-metrics.md): Learn how to use custom query parameters to filter export data API results for specific metrics and rows.
- [Introduction](https://docs.uplift.ai/api-reference/introduction.md): Overview of the Uplift API and authentication details
- [Rate Limits](https://docs.uplift.ai/api-reference/rate-limits.md): Understand API rate limits, usage expectations, and best practices for managing requests.
- [Retrieving Data in Batches](https://docs.uplift.ai/api-reference/retrieving-data-batches.md): Learn how to use limit and offset query parameters to control and paginate API requests efficiently.
- [5-0-5 Agility](https://docs.uplift.ai/biomechanics/activities/agility/5_0_5.md): Biomechanical analysis of the 5-0-5 change-of-direction agility drill, including sprint, deceleration, 180° turn, and re-acceleration phases.
- [Baseball: Hitting](https://docs.uplift.ai/biomechanics/activities/baseball/hitting.md): Biomechanical analysis of baseball hitting movements, including events and metrics for body and bat variables.
- [Ball Contact](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/events/ball-contact.md): The estimated timing of ball contact -  determined by audio signal (primary) or swing through event  (secondary, if ball contact not detected or detected outside of foot contact  and end twist events).
- [Elbow Slot](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/events/elbow-slot.md): When the rear elbow drops downward in preparation for the arm swing.
- [End Twist](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/events/end-twist.md): Finds the end of the twisting motion: after X Factor zero crossing, when X Factor velocity returns to 0 deg/s. This marks the completion of the twisting motion and swing overall.
- [Foot Contact](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/events/foot-contact.md): The instant the front foot fully contacts the ground and begins accepting weight.
- [Initiation](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/events/initiation.md): The initiation event marks when the lead foot begins to move prior to max knee raise. This marks the starting point of the swing.
- [Max Foot Raise](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/events/max-foot-raise.md): The maximum height of the lead foot during the swing. This event marks the peak elevation of the lead foot and is important for analyzing stride mechanics and balance.
- [Max X Factor](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/events/max-x-factor.md): The instant of maximum separation between shoulders and hips before the twisting motion of the swing. This represents the peak loading phase in preparation for the swing.
- [Peak Arm Angular Velocity](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/events/peak-arm-ang-vel.md): The instant of lead arm peak angular velocity.
- [Peak Pelvis Angular Velocity](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/events/peak-pelvis-ang-vel.md): The instant of pelvis peak angular velocity.
- [Peak Trunk Angular Velocity](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/events/peak-trunk-ang-vel.md): The instant of trunk peak angular velocity.
- [Peak Wrist Angular Velocity](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/events/peak-wrist-angular-velocity.md): The instant of maximum wrist angular velocity during the swing. This represents the peak of the final acceleration phase when the wrists generate maximum bat speed.
- [Pelvis Velocity Initiation (Launch)](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/events/pelvis-velocity-initiation.md): The start of pelvis rotation - also known as launch event. Determined as the leading edge of the pelvis angular velocity waveform. This marks the beginning of the power generation phase.
- [Pelvis Velocity Termination](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/events/pelvis-velocity-termination.md): The trailing edge of the pelvis angular velocity waveform. This marks the end of the pelvis rotation phase and the completion of lower body power generation.
- [Swing Through](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/events/swing-through.md): The instant the rear wrist passes in front of the lead wrist, corresponding to a batter committing to a swing (would be a strike). Swing through is used as a backup estimate for ball contact.
- [Twist](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/events/twist.md): The average timing of peak angular velocities for the pelvis, trunk, and arm. Used to identify the timing of the major twisting motion during the swing.
- [Wrist Initiation](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/events/wrist-initiation.md): The start of the wrist movement during the swing. Finds the last local minimum before peak wrist angular velocity. This marks the beginning of the final acceleration phase.
- [X Factor Zero Crossing](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/events/x-factor-zero-crossing.md): When the shoulder-hip separation crosses zero after Max X Factor. This marks the transition from loading to acceleration phase as the shoulders catch up to the hips.
- [Attack Angle](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/attack-angle.md): Angle relative to forward horizontal that the bat sweet spot moves through in the frames leading up to ball contact. Postive value indicates the bat sweet spot is moving upwards at that angle, vice versa for negative.
- [Attack Direction](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/attack-direction.md): Horizontal plane angle of the bat relative to the front of home plate, generally determines direction (right/left) of the hit.
- [Ball Contact Method](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/ball-contact-method.md): Ball contact event detection method: [both audio, single audio, swing through]. This indicates how the ball contact event was detected during analysis.
- [Bat Speed - Angular to Linear](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/bat-speed-angular-to-linear.md): Converted angular velocity to linear velocity. This measures the bat speed calculated from angular velocity measurements.
- [Bat Speed - Resultant Sweet Spot](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/bat-speed-resultant-sweet-spot.md): Linear velocity of bat sweet spot during the swing. This measures the actual bat speed at the optimal contact point.
- [Body Center of Mass Position X](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/body-center-of-mass-x.md): Whole body center of mass X position - for use with keypoint positions. This is a time series metric that tracks the body's forward-backward position throughout the swing.
- [Body Center of Mass Position Y](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/body-center-of-mass-y.md): Whole body center of mass Y position (up/down) - for use with keypoint positions. This is a time series metric that tracks the body's vertical position throughout the swing.
- [Body Center of Mass Position Z](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/body-center-of-mass-z.md): Whole body center of mass Z position - for use with keypoint positions. This is a time series metric that tracks the body's lateral position throughout the swing.
- [Connection at Impact](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/connection-at-impact.md): Horizontal plane angle of the bat relative to the batter's torso at the instant of ball contact. This measures the connection between the bat and body at impact.
- [Drifting Forward](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/drifting-forward.md): Binary indicator of excessive forward movement, determine by whether the pelvis drifts forward (towards the pitcher) more than 15 cm (~6 in) from launch to ball contact events.
- [Drifting Forward Magnitude](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/drifting-forward-magnitude.md): Distance drifted forward during the swing - see Drifting Forward movement flag. This quantifies the amount of excessive forward movement of the pelvis.
- [Elbow Flexion at Ball Contact](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/elbow-flexion-at-ball-contact.md): Amount of rear elbow flexion at ball contact event. This measures the elbow angle at the instant of impact.
- [Elbow Flexion at Launch](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/elbow-flexion-at-launch.md): Amount of rear elbow flexion at launch event. This measures the elbow angle at the start of the power generation phase.
- [Handedness](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/handedness.md): Handedness of the athlete ['right' or 'left'] as input parameter. This determines the swing side and affects the interpretation of all other metrics.
- [Hip Hinge](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/hip-hinge.md): Max amount of rear hip flexion between max foot raise and foot contact events.
- [Inter Elbow Distance at Ball Contact](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/inter-elbow-distance-at-ball-contact.md): Distance between the lead and rear elbows at ball contact event. This measures the separation between elbows at the instant of impact.
- [Inter Elbow Distance at Elbow Slot](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/inter-elbow-distance-at-elbow-slot.md): Distance between the lead and rear elbows at the elbow slot event. This measures the separation between elbows during the slot position.
- [Inter Elbow Distance at Trunk Peak](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/inter-elbow-distance-at-trunk-peak.md): Distance between the lead and rear elbows at the trunk peak angular velocity event.
- [Kinematic Sequence Order](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/kinematic-sequence-order.md): Sequence of segment peak angular velocities (twist speed) during the swing. Correct sequencing is pelvis-trunk-arm, representing the optimal kinetic chain transfer.
- [Knee Dominant](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/knee-dominant.md): Binary indicator if swing is knee-dominant, determined by comparing rear knee flexion with hip and ankle angle at launch event.
- [Lateral Pelvis Tilt](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/lateral-pelvis-tilt.md): Binary indicator of excessive lateral pelvis tilt, determined by whether the pelvis tilts upwards or downwards more than 10 deg during the swing (initiation to ball contact).
- [Launch Position](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/launch-position.md): Launch position indicates how the bat is positioned relative to the spine when the swing begins. A proper launch position helps ensure optimal bat path and contact point.
- [Lead Knee Angle at Ball Contact](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/lead-knee-angle-at-ball-contact.md): Amount of lead knee flexion at ball contact. This measures the knee angle of the front leg at the instant of impact.
- [Leads With Wrist](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/leads-with-wrist.md): Binary indicator if wrist leads the swing: if wrist initiation event occurs before pelvis initiation event. This identifies improper swing sequencing where the upper body initiates before the lower body.
- [Linear Stretch](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/linear-stretch.md): Distance between the lead ankle and center of both wrists along the pitch direction at foot contact. This measures the linear stretch of the body during the swing.
- [Max X Factor](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/max-x-factor.md): Max amount of twist hip shoulder separation during the swing.
- [On Plane Efficiency](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/on-plane-efficiency.md): Percentage of swing (within 10 deg) aligned with swing plane between foot contact and ball contact events. This measures swing consistency and efficiency.
- [Peak Arm Angular Velocity](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/peak-arm-angular-velocity.md): Max angular velocity of the lead upper arm segment during the swing. This represents the peak power generation from the arms.
- [Peak Pelvis Angular Velocity](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/peak-pelvis-angular-velocity.md): Max angular velocity of the pelvis segment during the swing. This represents power generation from the lower body.
- [Peak Trunk Angular Velocity](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/peak-trunk-angular-velocity.md): Max angular velocity of the trunk segment during the swing. This represents the peak power generation from the core.
- [Pelvis Acceleration Time](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/pelvis-acceleration-time.md): Time from pelvis initiation (start of rotation, also known as launch event) to peak pelvis angular velocity. This measures the acceleration phase of the pelvis during the swing.
- [Pelvis Deceleration Time](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/pelvis-deceleration-time.md): Time from peak pelvis angular velocity to pelvis termination (end of rotation). This measures the deceleration phase of the pelvis during the swing.
- [Pelvis Global Rotation](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/pelvis-global-rotation.md): Instantaneous measurement of pelvis transverse plane rotation relative to the global coordinate system. This is a time series metric that tracks pelvis rotation throughout the swing.
- [Pelvis Global Tilt](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/pelvis-global-tilt.md): Amount of pelvis frontal plane side-to-side tilt relative to the global coordinate system. This is a time series metric that tracks pelvis lateral tilt throughout the swing.
- [Pelvis to Trunk Speed Up](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/pelvis-to-trunk-speed-up.md): Ratio (multiplication factor) of speed increase from pelvis to trunk. This measures the efficiency of power transfer from the lower body to the trunk.
- [Rear Arm Connection](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/rear-arm-connection.md): Average distance between the rear elbow and mid-torso (halfway between mid-shoulder and mid-hip joint centers) between launch and ball contact events.
- [Relative Hand Position - Away from Body](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/relative-hand-position-away-from-body.md): Distance along the axis forward away from the body (+) between mid-shoulders and the average of the two wrists at the foot contact event.
- [Relative Hand Position - Towards Pitcher](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/relative-hand-position-towards-pitcher.md): Distance along the axis towards the pitcher (+) or away (-) between mid-shoulders and the average of the two wrists at the foot contact event.
- [Relative Hand Position - Up](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/relative-hand-position-up.md): Distance along the up axis (+) between mid-shoulders and the average of the two wrists at the foot contact event.
- [Scap Load at Launch](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/scap-load-at-launch.md): Amount of rear shoulder flexion (+) or extension (-) at launch event. Flexion/Extension translates to horizontal adduction (+) and abduction (-), respectively.
- [Shoulder Rotation Plane Flexion](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/shoulder-rotation-plane-flexion.md): Amount of trunk flexion required to reach the average plane of rotation of the shoulder joint centers. This measures the trunk posture for optimal swing mechanics.
- [Shoulder Rotation Plane Tilt](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/shoulder-rotation-plane-tilt.md): Amount of trunk tilt (+ = tilting towards the pitcher) to reach the average plane of rotation of the shoulders. This measures the lateral (side-side) trunk posture for optimal swing mechanics.
- [Stride Length](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/stride-length.md): Distance between the lead ankle at foot contact and the rear ankle at max foot raise event. This measures the stride length used during the swing.
- [Sway](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/sway.md): Binary indicator of excessive lateral movement of the pelvis just prior to swing.
- [Sway Leg](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/sway-leg.md): Binary indicator of excessive lateral movement, determined by rear ankle and knee joint centers.
- [Sweet Spot Fore Aft Position At Contact](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/sweet-spot-fore-aft-position-at-contact.md): Fore/aft position (closer to/further from the pitcher) of the bat sweet spot relative to the pelvis (mid point of the hip joint centers) at ball contact. This measures the bat position at impact.
- [Swing Path Angle](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/swing-path-angle.md): Plane angle of the bat swing path relative to horizontal in the 0.04 s leading up to ball contact. This measures the final approach angle of the bat.
- [Time to Ball Contact](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/time-to-ball-contact.md): Duration between initiation and ball contact events. This measures the total swing time from start to contact.
- [Time to Launch](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/time-to-launch.md): Duration between initiation and pelvis velocity initiation (launch) events. This measures the time from swing start to the beginning of power generation.
- [Trunk Center of Mass Position X](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/trunk-center-of-mass-x.md): Trunk center of mass X position - for use with keypoint positions. This is a time series metric that tracks the trunk's forward/backward position throughout the swing.
- [Trunk Center of Mass Position Y](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/trunk-center-of-mass-y.md): Trunk center of mass Y position (up/down) - for use with keypoint positions. This is a time series metric that tracks the trunk's vertical position throughout the swing.
- [Trunk Center of Mass Position Z](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/trunk-center-of-mass-z.md): Trunk center of mass Z position - for use with keypoint positions. This is a time series metric that tracks the trunk's lateral position throughout the swing.
- [Trunk Coil](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/trunk-coil.md): Max rotation angle that the trunk turns away from the pitcher. This measures the loading of the trunk during the swing.
- [Trunk Global Flexion](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/trunk-global-flexion.md): Amount of trunk sagittal plane flexion relative to the global coordinate system. This is a time series metric that tracks trunk flexion throughout the swing.
- [Trunk Global Rotation](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/trunk-global-rotation.md): Amount of trunk transverse plane rotation relative to the global coordinate system. This is a time series metric that tracks trunk rotation throughout the swing.
- [Trunk Global Tilt](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/trunk-global-tilt.md): Amount of trunk frontal plane side-to-side tilt relative to the global coordinate system. This is a time series metric that tracks trunk lateral tilt throughout the swing.
- [Trunk Tilt at Launch](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/trunk-tilt-at-launch.md): Amount of side-to-side trunk tilt at launch event (pelvis velocity initiation). Positive values indicate tilting towards the pitcher and vice versa.
- [Trunk to Arm Speed Up](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/trunk-to-arm-speed-up.md): Ratio (multiplication factor) of speed increase from trunk to arm. This measures the efficiency of power transfer from the core to the upper body.
- [Vertical Pelvis Hike](https://docs.uplift.ai/biomechanics/activities/baseball/hitting/metrics/vertical-pelvis-hike.md): Binary indicator of excessive vertical pelvis movement, determined if the pelvis keypoint finishes the swing (at ball contact) higher than where it started (at launch event).
- [Baseball: Pitching](https://docs.uplift.ai/biomechanics/activities/baseball/pitching.md): Biomechanical analysis of baseball pitching
- [Foot Contact](https://docs.uplift.ai/biomechanics/activities/baseball/pitching/events/foot-contact.md): When the lead foot contacts the ground and begins accepting weight.
- [Initiation](https://docs.uplift.ai/biomechanics/activities/baseball/pitching/events/initiation.md): Initial movement beginning the baseball pitch.
- [Low Hand](https://docs.uplift.ai/biomechanics/activities/baseball/pitching/events/low-hand.md): The low point of the throwing hand between max knee raise and release.
- [Max Knee Raise](https://docs.uplift.ai/biomechanics/activities/baseball/pitching/events/max-knee-raise.md): The maximum height of the knee during the pitch.
- [Peak Arm Angular Velocity](https://docs.uplift.ai/biomechanics/activities/baseball/pitching/events/peak-arm-ang-vel.md): The instant of upper arm peak angular velocity.
- [Peak Pelvis Angular Velocity](https://docs.uplift.ai/biomechanics/activities/baseball/pitching/events/peak-pelvis-ang-vel.md): The instant of pelvis peak angular velocity.
- [Peak Trunk Angular Velocity](https://docs.uplift.ai/biomechanics/activities/baseball/pitching/events/peak-trunk-ang-vel.md): The instant of trunk peak angular velocity.
- [Release](https://docs.uplift.ai/biomechanics/activities/baseball/pitching/events/release.md): The estimated time of ball release during the pitch.
- [Twist](https://docs.uplift.ai/biomechanics/activities/baseball/pitching/events/twist.md): The average timing of segment angular velocities.
- [Wrist Below Hips](https://docs.uplift.ai/biomechanics/activities/baseball/pitching/events/wrist-below-hips.md): The fist low point of the wrist below the hips after ball release.
- [Arm Drag](https://docs.uplift.ai/biomechanics/activities/baseball/pitching/metrics/arm-drag.md): Binary indicator of delayed arm motion, occurs if the elbow is above the wrist at foot contact.
- [Arm Slot Angle](https://docs.uplift.ai/biomechanics/activities/baseball/pitching/metrics/arm-slot-angle.md): Abduction angle of the arm at ball release compared to vertical.
- [Arm Slot Type](https://docs.uplift.ai/biomechanics/activities/baseball/pitching/metrics/arm-slot-type.md): Broad classification of arm slot angle.
- [Closing Front/Back](https://docs.uplift.ai/biomechanics/activities/baseball/pitching/metrics/closing-front-or-back.md): Binary indicator of excessive trunk tilt during the pitch.
- [Early Release](https://docs.uplift.ai/biomechanics/activities/baseball/pitching/metrics/early-release.md): Binary indicator of early ball release - indicated by wrist fore/aft position to lead toe. If wrist is behind toe at release, then it's early.
- [Elbow Hike](https://docs.uplift.ai/biomechanics/activities/baseball/pitching/metrics/elbow-hike.md): Binary indicator if elbow is above shoulder at foot contact.
- [Flying Open](https://docs.uplift.ai/biomechanics/activities/baseball/pitching/metrics/flying-open.md): Binary indicator of early trunk rotation.
- [Forearm Flyout](https://docs.uplift.ai/biomechanics/activities/baseball/pitching/metrics/forearm-flyout.md): Binary indicator of excessive elbow extension prior to ball release.
- [Getting Out In Front](https://docs.uplift.ai/biomechanics/activities/baseball/pitching/metrics/getting-out-in-front.md): Binary indicator of early trunk forward flexion at foot contact.
- [Handedness](https://docs.uplift.ai/biomechanics/activities/baseball/pitching/metrics/handedness.md): Handedness of the athlete ('right' or 'left') as input parameter.
- [Hanging Back](https://docs.uplift.ai/biomechanics/activities/baseball/pitching/metrics/hanging-back.md): Binary indicator if the pitcher initially moves backwards (away from the plate) directly after max front knee raise.
- [High Hand](https://docs.uplift.ai/biomechanics/activities/baseball/pitching/metrics/high-hand.md): Binary indicator of whether sufficient forearm layback occurs.
- [Hip Raise Angle](https://docs.uplift.ai/biomechanics/activities/baseball/pitching/metrics/hip-raise-angle.md): Maximum flexion angle of the lead hip prior to the pitch.
- [Kinematic Sequence](https://docs.uplift.ai/biomechanics/activities/baseball/pitching/metrics/kinematic-sequence-order.md): Sequence of peak angular velocities during the pitch.
- [Knee Collapse](https://docs.uplift.ai/biomechanics/activities/baseball/pitching/metrics/knee-collapse.md): Binary indicator of front knee bends excessively during the acceleration phase.
- [Late Rise](https://docs.uplift.ai/biomechanics/activities/baseball/pitching/metrics/late-rise.md): Binary indicator of delayed wrist elevation (flip up), occurring if wrist is below elbow at foot contact.
- [Max Layback Angle](https://docs.uplift.ai/biomechanics/activities/baseball/pitching/metrics/max-layback-angle.md): Maximum forearm layback angle (relative to horizontal forward) during the pitch.
- [Max Trunk COM Velocity](https://docs.uplift.ai/biomechanics/activities/baseball/pitching/metrics/max-trunk-com-velocity.md): Maximum linear velocity of the trunk center of mass during the pitch.
- [Max X Factor](https://docs.uplift.ai/biomechanics/activities/baseball/pitching/metrics/max-x-factor.md): Maximum amount of hip-shoulder separation before acceleration phase.
- [Peak Arm Angular Velocity](https://docs.uplift.ai/biomechanics/activities/baseball/pitching/metrics/peak-arm-angular-velocity.md): Maximum angular velocity (twist speed) of the upper arm segment during the pitch.
- [Peak Pelvis Angular Velocity](https://docs.uplift.ai/biomechanics/activities/baseball/pitching/metrics/peak-pelvis-angular-velocity.md): Maximum angular velocity (twist speed) of the pelvis segment during the pitch.
- [Peak Trunk Angular Velocity](https://docs.uplift.ai/biomechanics/activities/baseball/pitching/metrics/peak-trunk-angular-velocity.md): Maximum angular velocity (twist speed) of the trunk segment during the pitch.
- [Pelvis Angle to Plate Coil](https://docs.uplift.ai/biomechanics/activities/baseball/pitching/metrics/pelvis-angle-to-plate-coil.md): Max pelvis rotation angle away from home plate.
- [Pelvis Angle to Plate Foot Contact](https://docs.uplift.ai/biomechanics/activities/baseball/pitching/metrics/pelvis-angle-to-plate-foot-contact.md): Pelvis rotation angle relative to home plate at foot contact.
- [Pelvis Angle to Plate Release](https://docs.uplift.ai/biomechanics/activities/baseball/pitching/metrics/pelvis-angle-to-plate-release.md): Pelvis rotation angle relative to home plate at ball release.
- [Pelvis to Trunk Speed Up](https://docs.uplift.ai/biomechanics/activities/baseball/pitching/metrics/pelvis-to-trunk-speed-up.md): Ratio (multiplication factor) of speed increase from pelvis to trunk.
- [Stride Length](https://docs.uplift.ai/biomechanics/activities/baseball/pitching/metrics/stride-length.md): Length of stride as percentage of athlete height.
- [Sway](https://docs.uplift.ai/biomechanics/activities/baseball/pitching/metrics/sway.md): Binary indicator of excessive forwards/backwards motion of the body around the max knee raise event.
- [Time to Release](https://docs.uplift.ai/biomechanics/activities/baseball/pitching/metrics/time-to-release.md): Time from initiation to ball release. This measures the total duration of the pitching motion.
- [Trunk Angle to Plate Coil](https://docs.uplift.ai/biomechanics/activities/baseball/pitching/metrics/trunk-angle-to-plate-coil.md): Maximum trunk rotation angle away from home plate.
- [Trunk Angle to Plate Foot Contact](https://docs.uplift.ai/biomechanics/activities/baseball/pitching/metrics/trunk-angle-to-plate-foot-contact.md): Trunk rotation angle relative to home plate at foot contact.
- [Trunk Angle to Plate Release](https://docs.uplift.ai/biomechanics/activities/baseball/pitching/metrics/trunk-angle-to-plate-release.md): Trunk rotation angle relative to home plate at ball release.
- [Trunk Forward Tilt (Release)](https://docs.uplift.ai/biomechanics/activities/baseball/pitching/metrics/trunk-forward-tilt-at-ball-release.md): Forward trunk tilt at ball release.
- [Trunk Lateral Tilt at Release](https://docs.uplift.ai/biomechanics/activities/baseball/pitching/metrics/trunk-lateral-tilt-at-ball-release.md): Lateral (left/right) trunk tilt at ball release.
- [Trunk Lateral Tilt (Foot Contact)](https://docs.uplift.ai/biomechanics/activities/baseball/pitching/metrics/trunk-lateral-tilt-at-foot-contact.md): Lateral (left-right) trunk tilt at foot contact.
- [Trunk to Arm Speed Up](https://docs.uplift.ai/biomechanics/activities/baseball/pitching/metrics/trunk-to-arm-speed-up.md): Ratio (multiplication factor) of speed increase from trunk to arm.
- [Wrist Position to Lead Toe](https://docs.uplift.ai/biomechanics/activities/baseball/pitching/metrics/wrist-fore-aft-lead-toe-at-release.md): Wrist fore/aft position relative to the lead toe at release.
- [Wrist Height at Release](https://docs.uplift.ai/biomechanics/activities/baseball/pitching/metrics/wrist-height-at-release.md): Wrist height above the mound at release.
- [Basketball: Free Throw](https://docs.uplift.ai/biomechanics/activities/basketball/free_throw.md): Biomechanical analysis of basketball free throw movements, including events, phases, and discrete metrics.
- [Basketball: Jump Shot](https://docs.uplift.ai/biomechanics/activities/basketball/jump_shot.md): Biomechanical analysis of basketball jump shot movements, including events, phases, and discrete metrics.
- [Basketball: Layup](https://docs.uplift.ai/biomechanics/activities/basketball/layup.md): Biomechanical analysis of basketball layup movements, including events, phases, and discrete metrics.
- [Biomechanics Glossary](https://docs.uplift.ai/biomechanics/activities/biomech_glossary.md): Standard terms and definitions across the Uplift Platform
- [Running](https://docs.uplift.ai/biomechanics/activities/gait/running.md): Biomechanical analysis of running gait, including stride patterns, ground contact phases, and joint kinematics.
- [Gait: Walking](https://docs.uplift.ai/biomechanics/activities/gait/walking.md): Biomechanical analysis of walking gait, including stride patterns, ground contact phases, and joint kinematics.
- [Generic Outputs](https://docs.uplift.ai/biomechanics/activities/generic_outputs.md): Standard Joint Angles, Joint Velocities, and Keypoints.
- [Golf: Swing](https://docs.uplift.ai/biomechanics/activities/golf/swing.md): The golf swing requires precise coordination & timing between the upper and lower body to generate powerful and accurate swings.
- [Broad Jump](https://docs.uplift.ai/biomechanics/activities/jump/broad.md): Biomechanical analysis of broad jump movements, including events, phases, and discrete metrics.
- [Jump: Countermovement](https://docs.uplift.ai/biomechanics/activities/jump/countermovement.md): Biomechanical analysis of countermovement jump movements, including events, phases, and discrete metrics.
- [Drop Vertical Jump](https://docs.uplift.ai/biomechanics/activities/jump/drop_vertical.md): Biomechanical analysis of drop vertical jump movements, including events, phases, and discrete metrics.
- [Bottom](https://docs.uplift.ai/biomechanics/activities/jump/events/bottom.md): The lowest point of the pelvis before the jump.
- [Initiation](https://docs.uplift.ai/biomechanics/activities/jump/events/initiation.md): The start of the jump—when the person begins to move downward.
- [Landing](https://docs.uplift.ai/biomechanics/activities/jump/events/landing.md): The instant of ground contact after the jump.
- [Landing Bottom](https://docs.uplift.ai/biomechanics/activities/jump/events/landing-bottom.md): The lowest point of the pelvis after the jump (deepest landing absorption).
- [Peak Height](https://docs.uplift.ai/biomechanics/activities/jump/events/peak-height.md): The instant when maximum height is reached during the jump.
- [Takeoff](https://docs.uplift.ai/biomechanics/activities/jump/events/takeoff.md): The instant of leaving the ground.
- [Termination](https://docs.uplift.ai/biomechanics/activities/jump/events/termination.md): End of the movement—when the person returns to normal standing position.
- [Eccentric Velocity](https://docs.uplift.ai/biomechanics/activities/jump/metrics/eccentric-velocity.md): Average velocity during the jumping eccentric (downward) phase.
- [Flight Time](https://docs.uplift.ai/biomechanics/activities/jump/metrics/flight-time.md): Time from takeoff to landing.
- [Forward Displacement](https://docs.uplift.ai/biomechanics/activities/jump/metrics/forward-displacement.md): Forward displacement during landing.
- [High Jump Height](https://docs.uplift.ai/biomechanics/activities/jump/metrics/high-jump-height.md): Binary indicator if jump height exceeds 14 inches.
- [Hip Knee Dominance](https://docs.uplift.ai/biomechanics/activities/jump/metrics/hip-knee-dominance.md): Ratio of hip vs. knee contribution (0 = hip dominant, 1 = knee dominant) during a given phase.
- [Hips Feet Stationary](https://docs.uplift.ai/biomechanics/activities/jump/metrics/hips-feet-stationary.md): Binary indicator of whether the legs refrain from rotating in or out during the jump.
- [Jump Height](https://docs.uplift.ai/biomechanics/activities/jump/metrics/jump-height.md): Maximum height reached during the jump.
- [Kinematic Sequence](https://docs.uplift.ai/biomechanics/activities/jump/metrics/kinematic-sequence.md): Sequence of peak joint angular velocities during the jump.
- [Kinematic Sequence Array](https://docs.uplift.ai/biomechanics/activities/jump/metrics/kinematic-sequence-array.md): Array representation of the sequence of peak segment angular velocities during the jump.
- [Knee Valgus](https://docs.uplift.ai/biomechanics/activities/jump/metrics/knee-valgus.md): Medial (inward) knee displacement at a specific event or over a phase during the jump.
- [Knees Track](https://docs.uplift.ai/biomechanics/activities/jump/metrics/knees-track.md): Binary indicator of whether the knees track properly over the toes during the jump
- [Landing Stiffness Index](https://docs.uplift.ai/biomechanics/activities/jump/metrics/landing-stiffness-index.md): Index of landing stiffness during the landing phase.
- [Landing Stiffness Index Level](https://docs.uplift.ai/biomechanics/activities/jump/metrics/landing-stiffness-index-level.md): Classification or level of landing stiffness (e.g., stiff, moderate, compliant).
- [Peak Ankle Angle](https://docs.uplift.ai/biomechanics/activities/jump/metrics/peak-ankle-angle.md): Maximum ankle flexion (dorsiflexion) angle at a given phase or event.
- [Peak Ankle Velocity](https://docs.uplift.ai/biomechanics/activities/jump/metrics/peak-ankle-velocity.md): Maximum ankle angular velocity (flexion or extension).
- [Peak COM Velocity](https://docs.uplift.ai/biomechanics/activities/jump/metrics/peak-com-velocity.md): Maximum center of mass velocity during a specified phase of the jump or landing.
- [Peak Hip Flexion](https://docs.uplift.ai/biomechanics/activities/jump/metrics/peak-hip-angle.md): Maximum hip flexion angle at a given phase or event.
- [Peak Hip Extension Velocity](https://docs.uplift.ai/biomechanics/activities/jump/metrics/peak-hip-velocity.md): Maximum hip extension angular velocity during a concentric phase.
- [Peak Knee Flexion](https://docs.uplift.ai/biomechanics/activities/jump/metrics/peak-knee-angle.md): Maximum knee flexion angle over a given phase.
- [Peak Knee Extension Velocity](https://docs.uplift.ai/biomechanics/activities/jump/metrics/peak-knee-velocity.md): Maximum knee angular velocity, either flexion or extension depending on the phase.
- [Peak Shoulder Flexion Velocity Takeoff Concentric](https://docs.uplift.ai/biomechanics/activities/jump/metrics/peak-shoulder-flexion-velocity-takeoff-concentric.md): Maximum shoulder flexion velocity during the concentric (push) phase of the jump.
- [Reactive Strength Index Modified (RSI Mod)](https://docs.uplift.ai/biomechanics/activities/jump/metrics/reactive-strength-index-modified.md): Measures ratio of jump height to ground contact time or drop height.
- [Right Displacement](https://docs.uplift.ai/biomechanics/activities/jump/metrics/right-displacement.md): Lateral (side-to-side) displacement during landing.
- [Shank Angle WRT Global](https://docs.uplift.ai/biomechanics/activities/jump/metrics/shank-angle-global.md): Angle of the shank (lower leg) segment relative to the global coordinate system, in a given plane.
- [Stiff Knee Landing](https://docs.uplift.ai/biomechanics/activities/jump/metrics/stiff-knee-landing.md): Binary indicator of stiff knee landing (reduced knee flexion during landing absorption).
- [Takeoff Velocity](https://docs.uplift.ai/biomechanics/activities/jump/metrics/takeoff-velocity.md): Vertical velocity at takeoff.
- [Thigh Angle WRT Global](https://docs.uplift.ai/biomechanics/activities/jump/metrics/thigh-angle-global.md): Angle of the thigh segment relative to the global coordinate system, in a given plane.
- [Single Leg Jump](https://docs.uplift.ai/biomechanics/activities/jump/single_leg.md): Biomechanical analysis of single leg jump movements, including events, phases, and discrete metrics.
- [Single Leg Broad Jump](https://docs.uplift.ai/biomechanics/activities/jump/single_leg_broad.md): Biomechanical analysis of single leg broad jump movements, including events, phases, and discrete metrics.
- [Squat Jump](https://docs.uplift.ai/biomechanics/activities/jump/squat.md): Biomechanical analysis of squat jump movements, including events, phases, and discrete metrics.
- [Bottom](https://docs.uplift.ai/biomechanics/activities/lunge/events/bottom.md): The instant of maximum lunge depth, when the pelvis reaches its lowest point.
- [End](https://docs.uplift.ai/biomechanics/activities/lunge/events/end.md): The end of the forward lunge, when the athlete returns to the starting position.
- [Initiation](https://docs.uplift.ai/biomechanics/activities/lunge/events/initiation.md): The start of the forward lunge, when the athlete begins stepping forward.
- [Forward Lunge](https://docs.uplift.ai/biomechanics/activities/lunge/forward.md): Biomechanical analysis of forward lunge movements, including events, phases, and discrete metrics.
- [Max Ankle Flexion Angle](https://docs.uplift.ai/biomechanics/activities/lunge/metrics/ankle-flexion.md): Maximum dorsiflexion angle of the right or left ankle during the forward lunge.
- [Max Hip Flexion Angle](https://docs.uplift.ai/biomechanics/activities/lunge/metrics/hip-flexion.md): Maximum hip flexion angle of the right or left hip during the forward lunge.
- [Hip Knee Dominance](https://docs.uplift.ai/biomechanics/activities/lunge/metrics/hip-knee-dominance.md): Ratio of hip vs. knee contribution (0 = hip dominant, 1 = knee dominant) during eccentric or concentric phase of the forward lunge.
- [Max Knee Flexion Angle](https://docs.uplift.ai/biomechanics/activities/lunge/metrics/knee-flexion.md): Maximum knee flexion angle of the right or left knee during the forward lunge.
- [Knee Valgus](https://docs.uplift.ai/biomechanics/activities/lunge/metrics/knee-valgus.md): Medial knee displacement (valgus) of the lead leg at the bottom of the forward lunge.
- [Lunge Depth](https://docs.uplift.ai/biomechanics/activities/lunge/metrics/lunge-depth.md): Vertical displacement of the pelvis during the forward lunge, reflecting range of motion depth.
- [Stance Length and Width](https://docs.uplift.ai/biomechanics/activities/lunge/metrics/stance-dimensions.md): Anterior–posterior (length) and medial–lateral (width) distance between the feet at the bottom of the forward lunge.
- [Max Trunk Lean](https://docs.uplift.ai/biomechanics/activities/lunge/metrics/trunk-lean.md): Maximum lateral trunk lean to the right or left during the forward lunge.
- [Pose QA & Biomech QA](https://docs.uplift.ai/biomechanics/activities/pose_biomech_qa.md): Ensuring quality outputs from automated processing.
- [range_of_motion-ankle_flexion](https://docs.uplift.ai/biomechanics/activities/range_of_motion/ankle_flexion.md): Biomechanical analysis of ankle dorsiflexion range of motion assessment, including measurement positions and discrete metrics.
- [Cervical Flexion/Extension](https://docs.uplift.ai/biomechanics/activities/range_of_motion/cervical_flexion_extension.md): Biomechanical analysis of cervical spine flexion and extension range of motion assessment.
- [Cervical Rotation](https://docs.uplift.ai/biomechanics/activities/range_of_motion/cervical_rotation.md): Biomechanical analysis of cervical spine rotation range of motion assessment.
- [SFMA Shoulder Extension](https://docs.uplift.ai/biomechanics/activities/range_of_motion/sfma_shoulder_extension.md): Biomechanical analysis of SFMA shoulder extension range of motion assessment, including compensations and functional scoring.
- [SFMA Shoulder Flexion](https://docs.uplift.ai/biomechanics/activities/range_of_motion/sfma_shoulder_flexion.md): Biomechanical analysis of SFMA shoulder flexion range of motion assessment, including compensations and functional scoring.
- [Shoulder 90/90](https://docs.uplift.ai/biomechanics/activities/range_of_motion/shoulder_9090.md): Biomechanical analysis of shoulder 90/90 range of motion assessment for external and internal rotation with compensations.
- [Shoulder Flexion](https://docs.uplift.ai/biomechanics/activities/range_of_motion/shoulder_flexion.md): Biomechanical analysis of shoulder flexion and extension range of motion assessment.
- [T-Spine Rotation](https://docs.uplift.ai/biomechanics/activities/range_of_motion/t_spine.md): Biomechanical analysis of thoracic spine rotation range of motion assessment with compensation detection.
- [Softball: Hitting](https://docs.uplift.ai/biomechanics/activities/softball/hitting.md): Biomechanical analysis of softball hitting movements, including events, phases, and discrete metrics.
- [Bodyweight Squat](https://docs.uplift.ai/biomechanics/activities/squat/body_weight.md): Biomechanical analysis of bodyweight squat movements, including events, phases, and discrete metrics.
- [Ascent Start](https://docs.uplift.ai/biomechanics/activities/squat/events/ascent-start.md): The start of upward movement from the bottom of the squat.
- [Bottom](https://docs.uplift.ai/biomechanics/activities/squat/events/bottom.md): The instant of maximum squat depth.
- [Bottom1](https://docs.uplift.ai/biomechanics/activities/squat/events/bottom1.md): The first instance of maximum squat depth.
- [End](https://docs.uplift.ai/biomechanics/activities/squat/events/end.md): The end of the squat movement, when the person returns to standing.
- [Initiation](https://docs.uplift.ai/biomechanics/activities/squat/events/initiation.md): The start of the squat, when the person begins to move downward.
- [Bottom Time](https://docs.uplift.ai/biomechanics/activities/squat/metrics/bottom-time.md): Time spent at the bottom position of the squat.
- [Concentric Velocity](https://docs.uplift.ai/biomechanics/activities/squat/metrics/concentric-velocity.md): Average vertical velocity during the squat concentric (upward) phase.
- [Continuous](https://docs.uplift.ai/biomechanics/activities/squat/metrics/continuous.md): Binary indicator of whether the squat is continuous (1) or has a pause at the bottom (0).
- [Depth](https://docs.uplift.ai/biomechanics/activities/squat/metrics/depth.md): Vertical displacement of the pelvis from start to bottom of the squat.
- [Eccentric Velocity](https://docs.uplift.ai/biomechanics/activities/squat/metrics/eccentric-velocity.md): Average vertical velocity during the squat eccentric (downward) phase.
- [Hip Below Knee / Hips Pass Knees and Distance](https://docs.uplift.ai/biomechanics/activities/squat/metrics/hip-below-knee.md): Whether the hips go below the level of the knees at squat bottom, and the distance.
- [Hip Knee Dominance](https://docs.uplift.ai/biomechanics/activities/squat/metrics/hip-knee-dominance.md): Ratio of hip vs. knee contribution (0 = hip dominant, 1 = knee dominant) during eccentric or concentric phase.
- [Hips Feet Stationary](https://docs.uplift.ai/biomechanics/activities/squat/metrics/hips-feet-stationary.md): Binary indicator of whether the hips and feet refrain from rotating inwards or outwards during the squat.
- [Knee Valgus](https://docs.uplift.ai/biomechanics/activities/squat/metrics/knee-valgus.md): Medial knee displacement (valgus motion) at bottom or over eccentric/concentric phases during the squat.
- [Knees Track](https://docs.uplift.ai/biomechanics/activities/squat/metrics/knees-track.md): Binary indicator of whether the knees track properly over the toes during the squat (1 = yes, 0 = no).
- [Max Trunk Angle](https://docs.uplift.ai/biomechanics/activities/squat/metrics/max-trunk-angle.md): Maximum sagittal plane trunk angle relative to vertical during the squat.
- [Peak Ankle Flexion](https://docs.uplift.ai/biomechanics/activities/squat/metrics/peak-ankle-flexion.md): Maximum ankle flexion (dorsiflexion) angle during the squat.
- [Peak Hip Flexion](https://docs.uplift.ai/biomechanics/activities/squat/metrics/peak-hip-flexion.md): Maximum hip flexion angle during the squat.
- [Peak Knee Flexion](https://docs.uplift.ai/biomechanics/activities/squat/metrics/peak-knee-flexion.md): Maximum knee flexion angle during the squat.
- [Functional (SFMA)](https://docs.uplift.ai/biomechanics/activities/squat/metrics/sfma-functional.md): Binary indicator of whether the SFMA squat is classified as functional (1) or not (0) based on hips pass knees and wrists pass ankles.
- [Sufficient Knee Flexion](https://docs.uplift.ai/biomechanics/activities/squat/metrics/sufficient-knee-flexion.md): Binary indicator of whether knee flexion is sufficient (1) or not (0) during the single-leg squat.
- [Trunk Tibia Angle](https://docs.uplift.ai/biomechanics/activities/squat/metrics/trunk-tibia-angle.md): Angle between the trunk and tibia segments at the bottom of the squat.
- [Trunk Tibia Parallel](https://docs.uplift.ai/biomechanics/activities/squat/metrics/trunk-tibia-parallel.md): Binary indicator of whether the trunk and tibia are parallel (1) or not (0) at bottom.
- [Wrist Past Feet](https://docs.uplift.ai/biomechanics/activities/squat/metrics/wrist-past-feet.md): Binary indicator of whether the wrists move in front of the toes or not during an overhead squat.
- [Wrists Pass Ankles](https://docs.uplift.ai/biomechanics/activities/squat/metrics/wrists-pass-ankles.md): Whether the wrists move beyond the ankles at maximum wrist height during the SFMA squat, and their distance.
- [Overhead Squat](https://docs.uplift.ai/biomechanics/activities/squat/overhead.md): Biomechanical analysis of overhead squat movements, including events, phases, and discrete metrics.
- [SFMA Squat](https://docs.uplift.ai/biomechanics/activities/squat/sfma_squat.md): Biomechanical analysis of SFMA squat movements, including events, phases, and discrete metrics.
- [Single Leg Squat](https://docs.uplift.ai/biomechanics/activities/squat/single_leg.md): Biomechanical analysis of single leg squat movements, including events, phases, and discrete metrics.
- [Plank](https://docs.uplift.ai/biomechanics/activities/stability/plank.md): Biomechanical analysis of plank holds, including side, front, and static stability measurements.
- [SFMA Back Bend](https://docs.uplift.ai/biomechanics/activities/stability/sfma_back_bend.md): Biomechanical analysis of SFMA back bend movement assessment, including shoulder flexion and hip extension range of motion.
- [SFMA Toe Touch](https://docs.uplift.ai/biomechanics/activities/stability/sfma_toe_touch.md): Biomechanical analysis of SFMA toe touch movement assessment, including forward bending and hip flexion range of motion.
- [Single Leg Stance](https://docs.uplift.ai/biomechanics/activities/stability/single_leg_stance.md): Biomechanical analysis of single leg stance balance assessment, including sway measurements and trunk lean evaluation.
- [Y-Balance Lower Quarter](https://docs.uplift.ai/biomechanics/activities/stability/y_balance_lower_quarter.md): Biomechanical analysis of Y-Balance lower quarter test, including reach distance and stability measurements.
- [Y-Balance Upper Quarter](https://docs.uplift.ai/biomechanics/activities/stability/y_balance_upper_quarter.md): Biomechanical analysis of Y-Balance upper quarter test, including reach distance and stability measurements.
- [Tennis: Backhand](https://docs.uplift.ai/biomechanics/activities/tennis/backhand.md): Biomechanical analysis of tennis backhand strokes.
- [Apex](https://docs.uplift.ai/biomechanics/activities/tennis/events/apex.md): Maximum height of the dominant-side wrist joint center during the serve. A proxy for ball contact.
- [Ball Release](https://docs.uplift.ai/biomechanics/activities/tennis/events/ball-release.md): The estimated timing of the ball toss during the serve.
- [Initiation](https://docs.uplift.ai/biomechanics/activities/tennis/events/initiation.md): The start of the tennis serve.
- [Low Arm](https://docs.uplift.ai/biomechanics/activities/tennis/events/low-arm.md): The low point of the dominant arm just prior to ball contact.
- [Max Shoulder ER](https://docs.uplift.ai/biomechanics/activities/tennis/events/max-shoulder-er.md): The instant of maximum shoulder external rotation between ball release and apex.
- [Peak Forearm Velocity](https://docs.uplift.ai/biomechanics/activities/tennis/events/peak-forearm-velocity.md): The instant of peak forearm forward angular velocity, used to determine forward kinematic sequence.
- [Peak Torso Velocity](https://docs.uplift.ai/biomechanics/activities/tennis/events/peak-torso-velocity.md): The instant of peak torso forward angular velocity, used to determine forward kinematic sequence.
- [Peak Upper Arm Velocity](https://docs.uplift.ai/biomechanics/activities/tennis/events/peak-upper-arm-velocity.md): The instant of peak upper arm forward angular velocity, used to determine forward kinematic sequence.
- [Termination](https://docs.uplift.ai/biomechanics/activities/tennis/events/termination.md): End of the tennis serve—when the movement is complete.
- [Tennis: Forehand](https://docs.uplift.ai/biomechanics/activities/tennis/forehand.md): Biomechanical analysis of tennis forehand strokes.
- [Acceleration Phase Max Elbow Extension Velocity](https://docs.uplift.ai/biomechanics/activities/tennis/metrics/acceleration-phase-elbow-extension-velocity.md): Maximum extension velocity of the dominant elbow during the acceleration phase of the serve.
- [Acceleration Phase Max Knee Extension Velocity](https://docs.uplift.ai/biomechanics/activities/tennis/metrics/acceleration-phase-knee-extension-velocity.md): Maximum knee extension velocity of the front and back leg during the acceleration phase.
- [Cocking Phase Max Shoulder External Rotation](https://docs.uplift.ai/biomechanics/activities/tennis/metrics/cocking-phase-shoulder-external-rotation.md): Maximum amount of shoulder external rotation during the cocking phase of the serve.
- [Cocking Phase Shoulder Hyperangulation](https://docs.uplift.ai/biomechanics/activities/tennis/metrics/cocking-phase-shoulder-hyperangulation.md): Maximum shoulder horizontal abduction during the cocking phase of the serve.
- [Contact Phase Elbow Flexion](https://docs.uplift.ai/biomechanics/activities/tennis/metrics/contact-phase-elbow-flexion.md): Amount of elbow flexion at apex (ball contact).
- [Contact Phase Shoulder Abduction](https://docs.uplift.ai/biomechanics/activities/tennis/metrics/contact-phase-shoulder-abduction.md): Amount of shoulder abduction at apex (ball contact).
- [Contact Phase Trunk Tilt](https://docs.uplift.ai/biomechanics/activities/tennis/metrics/contact-phase-trunk-tilt.md): Degrees of side-side trunk tilt at apex (ball contact).
- [Contact Phase Wrist Height](https://docs.uplift.ai/biomechanics/activities/tennis/metrics/contact-phase-wrist-height.md): Height of the wrist at apex (ball contact) measured from the ground.
- [Contact Phase Wrist Velocity](https://docs.uplift.ai/biomechanics/activities/tennis/metrics/contact-phase-wrist-velocity.md): Linear speed of the wrist joint center at apex (ball contact).
- [Contact Phase X Factor](https://docs.uplift.ai/biomechanics/activities/tennis/metrics/contact-phase-x-factor.md): Angle between the shoulders and hips in the transverse plane (twisting) at apex (ball contact).
- [Forward Angular Velocity Time Series](https://docs.uplift.ai/biomechanics/activities/tennis/metrics/forward-angular-velocity-time-series.md): Time series of instantaneous forward angular velocity for torso, upper arm, and forearm. Used to evaluate kinematic sequence.
- [Forward Kinematic Sequence](https://docs.uplift.ai/biomechanics/activities/tennis/metrics/forward-kinematic-sequence.md): Sequence of peak forward angular velocities (torso, upper arm, forearm). Optimal sequence is 'torso-upper_arm-forearm'.
- [Forward Trunk Arm Speedup](https://docs.uplift.ai/biomechanics/activities/tennis/metrics/forward-trunk-arm-speedup.md): Speedup factor of peak forward angular velocities from the torso to the upper arm.
- [Forward Upper Arm Forearm Speedup](https://docs.uplift.ai/biomechanics/activities/tennis/metrics/forward-upper-arm-forearm-speedup.md): Speedup factor of peak forward angular velocities from the upper arm to the forearm.
- [Handedness](https://docs.uplift.ai/biomechanics/activities/tennis/metrics/handedness.md): Handedness of the athlete (left or right) for the tennis serve.
- [Loading Phase Ball Release Angle](https://docs.uplift.ai/biomechanics/activities/tennis/metrics/loading-phase-ball-release-angle.md): Arm angle relative to torso at the instance of ball release
- [Loading Phase Max Knee Flexion](https://docs.uplift.ai/biomechanics/activities/tennis/metrics/loading-phase-knee-flexion.md): Maximum knee flexion of the front leg and back leg during the loading phase of the serve.
- [Loading Phase Pelvis Tilt](https://docs.uplift.ai/biomechanics/activities/tennis/metrics/loading-phase-pelvis-tilt.md): Maximum pelvis side-side tilt towards the rear during the loading phase of the serve.
- [Loading Phase Shoulder Hip Separation](https://docs.uplift.ai/biomechanics/activities/tennis/metrics/loading-phase-shoulder-hip-separation.md): Maximum difference in rotation of the shoulders and hips (separation angle) during the loading phase.
- [Loading Phase Trunk Tilt](https://docs.uplift.ai/biomechanics/activities/tennis/metrics/loading-phase-trunk-tilt.md): Maximum trunk side-side tilt towards the rear during the loading phase of the serve.
- [Peak Forearm Forward Angular Velocity](https://docs.uplift.ai/biomechanics/activities/tennis/metrics/peak-forearm-forward-angular-velocity.md): Peak forward angular velocity of the forearm segment in the serve direction.
- [Peak Pelvis Twist Angular Velocity](https://docs.uplift.ai/biomechanics/activities/tennis/metrics/peak-pelvis-twist-angular-velocity.md): Peak twist angular velocity of the pelvis segment in the serve direction.
- [Peak Torso Forward Angular Velocity](https://docs.uplift.ai/biomechanics/activities/tennis/metrics/peak-torso-forward-angular-velocity.md): Peak forward angular velocity of the torso segment in the serve direction.
- [Peak Torso Twist Angular Velocity](https://docs.uplift.ai/biomechanics/activities/tennis/metrics/peak-torso-twist-angular-velocity.md): Peak twist angular velocity of the torso segment.
- [Peak Upper Arm Forward Angular Velocity](https://docs.uplift.ai/biomechanics/activities/tennis/metrics/peak-upper-arm-forward-angular-velocity.md): Peak forward angular velocity of the upper arm segment in the serve direction.
- [Peak Upper Arm Twist Angular Velocity](https://docs.uplift.ai/biomechanics/activities/tennis/metrics/peak-upper-arm-twist-angular-velocity.md): Peak twist angular velocity of the upper arm segment.
- [Pelvis Coil](https://docs.uplift.ai/biomechanics/activities/tennis/metrics/pelvis-coil.md): Maximum amount of pelvis twist rotation away from the serve direction (preloading the twist before the serve).
- [Pelvis Stretch](https://docs.uplift.ai/biomechanics/activities/tennis/metrics/pelvis-stretch.md): Twist range of motion of the pelvis during the serve.
- [Stance Position](https://docs.uplift.ai/biomechanics/activities/tennis/metrics/stance-position.md): Classification of serve stance position: platform or pinpoint.
- [Trunk Coil](https://docs.uplift.ai/biomechanics/activities/tennis/metrics/trunk-coil.md): Maximum amount of trunk twist rotation away from the serve direction (preloading the twist before the serve).
- [Trunk Stretch](https://docs.uplift.ai/biomechanics/activities/tennis/metrics/trunk-stretch.md): Twist range of motion of the trunk during the serve.
- [Twist Kinematic Sequence](https://docs.uplift.ai/biomechanics/activities/tennis/metrics/twist-kinematic-sequence.md): Sequence of peak twist angular velocities (pelvis, torso, upper arm). Optimal sequence is 'pelvis-torso-upper_arm'.
- [Twist Pelvis Torso Speedup](https://docs.uplift.ai/biomechanics/activities/tennis/metrics/twist-pelvis-torso-speedup.md): Speedup factor of peak twist angular velocities from the pelvis to the torso.
- [Twist Trunk Arm Speedup](https://docs.uplift.ai/biomechanics/activities/tennis/metrics/twist-trunk-arm-speedup.md): Speedup factor of peak twist angular velocities from the torso to the upper arm.
- [Tennis: Overhand Serve](https://docs.uplift.ai/biomechanics/activities/tennis/overhand_serve.md): Documentation of tennis overhand events, phases, and metrics.
- [Tennis: Underhand Serve](https://docs.uplift.ai/biomechanics/activities/tennis/underhand_serve.md): Biomechanical analysis of tennis underhand (underarm) serve.
- [Track and Field: Discus](https://docs.uplift.ai/biomechanics/activities/track_and_field/discus.md): Biomechanical analysis of discus throw movements, including events, phases, and discrete metrics.
- [Track & Field: Hammer Throw](https://docs.uplift.ai/biomechanics/activities/track_and_field/hammer_throw.md): Biomechanical analysis of hammer throw movements, including events, phases, and discrete metrics.
- [Track & Field: High Jump](https://docs.uplift.ai/biomechanics/activities/track_and_field/high_jump.md): Biomechanical analysis of high jump movements, including events, phases, and discrete metrics.
- [Track and Field: Shot Put](https://docs.uplift.ai/biomechanics/activities/track_and_field/shot_put.md): Biomechanical analysis of shot put throw movements, including events, phases, and discrete metrics.
- [Movement Library](https://docs.uplift.ai/biomechanics/movements.md): Uplift Biomechanics Analysis Documentation
- [Overview](https://docs.uplift.ai/home.md): Uplift Capture is a powerful biomechanical analysis platform that helps athletes, trainers, and organizations access and understand their movement data. Our API enables you to programmatically access your biomechanical data, integrate 3D motion capture analysis into your applications, and build powe…
- [3D Data Transformation](https://docs.uplift.ai/samples/3d-data-transformation.md): A demo script that applies rotations and translations to 3D data.
- [Sample Apps](https://docs.uplift.ai/samples/apps.md): Learn about the Uplift API Sample Repo and its tools for working with APIs and transforming 3D data.

## OpenAPI Specs

- [openapi](https://docs.uplift.ai/api-reference/openapi.json)

## Optional

- [Support](https://help.uplift.ai)