Documentation Index
Fetch the complete documentation index at: https://docs.uplift.ai/llms.txt
Use this file to discover all available pages before exploring further.
Overview
The 5-0-5 agility drill is a standardized change-of-direction agility test used to assess an athlete’s ability to accelerate, decelerate, plant, pivot 180°, and re-accelerate over a 5-meter course.
It is commonly used in athletic assessment, return-to-sport screening, and performance monitoring as it isolates the mechanical demands of rapid direction change.
Instructions
- Set up two lines or cones 5 meters apart on a flat surface.
- Place cameras 45 deg to the same side from the running line pointed at the center. Use landscape mode and ensure cameras can see the full 5-meter distance (both cones).
- Stand at the start line in an athletic ready position.
- On go, sprint forward toward the turn line.
- Plant one foot on or just past the turn line, pivot 180°, and sprint back through the start line.
- Perform with both left and right foot as the plant foot across separate trials.
- Perform at maximal effort for fastest time.
Dimensions
Required inputs for processing:
- None — direction of movement is detected automatically from the pelvis trajectory
Output Variables
Events
| Metric | Description |
|---|
| Start | When the athlete initiates movement, detected as when pelvis velocity exceeds 0.2 m/s |
| Turn | The instant of maximum pelvis displacement, corresponding to the 180° pivot |
| End | When the athlete returns to the start position |
| Left Foot Strike | All left foot contact frames between Start and End |
| Right Foot Strike | All right foot contact frames between Start and End |
| Left Foot Off | All left foot off frames between Start and End |
| Right Foot Off | All right foot off frames between Start and End |
Phases
| Phase | Start | End |
|---|
| Approach (First Half) | Start | Turn |
| Return (Second Half) | Turn | End |
General Metrics
| Metric | Units | Description |
|---|
| Direction | string | Auto-detected direction of first sprint (‘right’ or ‘left’) |
| Total Time | seconds | Duration from Start to End |
| First Half Time | seconds | Duration from Start to Turn (approach/deceleration) |
| Second Half Time | seconds | Duration from Turn to End (re-acceleration) |
| Turn Time | seconds | Time between last foot contact before and first foot contact after the Turn |
_1_ refers to the approach (first half); _2_ refers to the return (second half). Step index follows temporal order.
| Metric | Units | Description |
|---|
| Left GCT — Approach, steps 1–5 | seconds | Left foot ground contact time during approach |
| Right GCT — Approach, steps 1–5 | seconds | Right foot ground contact time during approach |
| Left GCT — Return, steps 1–5 | seconds | Left foot ground contact time during return |
| Right GCT — Return, steps 1–5 | seconds | Right foot ground contact time during return |
Step Length Metrics
Step length (SL) is the distance traveled by the ankle joint center from foot strike to foot off for each step, up to 5 steps per leg per half.
| Metric | Units | Description |
|---|
| Left SL — Approach, steps 1–5 | meters | Left step length during approach |
| Right SL — Approach, steps 1–5 | meters | Right step length during approach |
| Left SL — Return, steps 1–5 | meters | Left step length during return |
| Right SL — Return, steps 1–5 | meters | Right step length during return |
Pelvis Path Time Series
Pelvis position, velocity, and acceleration are returned as full time-series arrays, with the coordinate frame rotated to align the X axis with the direction of movement.
| Metric | Units | Description |
|---|
| Pelvis Position X | meters | Pelvis position along the sprint axis |
| Pelvis Position Y | meters | Pelvis vertical position |
| Pelvis Position Z | meters | Pelvis position perpendicular to sprint axis |
| Pelvis Velocity | m/s | Pelvis velocity along the sprint axis |
| Pelvis Acceleration | m/s² | Pelvis acceleration along the sprint axis |
Notes
- Kinematic data typically captured at 120 Hz for agility drills
- Direction is detected automatically; separate trials should be performed for left and right plant foot
- Step indices are assigned in temporal order; not all 5 steps per leg may be populated depending on trial length and gait
- Turn time captures the period of foot contact at the change-of-direction pivot and may be sensitive to plant foot strategy
