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Running
Overview
Events
Phases and Stages of Gait
Discrete Metrics
Notes

Running

Overview

Running gait analysis evaluates the biomechanics of running motion, including stride patterns, ground contact phases, and joint kinematics during the running cycle.

Events

Metric	Data Type	Description
Right Heel Strike	Int	when the right heel contacts the ground
Right Toe Off	Int	when the right toe leaves the ground
Left Heel Strike	Int	when the left heel contacts the ground
Left Toe Off	Int	when the left toe leaves the ground
Right Mid Stance	Int	the instant of maximum right knee flexion during stance
Left Mid Stance	Int	the instant of maximum left knee flexion during stance
Right Mid Swing	Int	the instant of maximum right knee flexion during swing
Left Mid Swing	Int	the instant of maximum left knee flexion during swing

Phases and Stages of Gait

Phase	Stage	Start	End	Event or Phase
Right Stance	Initial Contact	Right Heel Strike	Right Mid Stance	Phase
Right Stance	Terminal Stance	Right Mid Stance	Right Toe Off	Phase
Right Swing	Initial Swing	Right Toe Off	Right Mid Swing	Phase
Right Swing	Terminal Swing	Right Mid Swing	Left Heel Strike	Phase
Left Stance	Initial Contact	Left Heel Strike	Left Mid Stance	Phase
Left Stance	Terminal Stance	Left Mid Stance	Left Toe Off	Phase
Left Swing	Initial Swing	Left Toe Off	Left Mid Swing	Phase
Left Swing	Terminal Swing	Left Mid Swing	Right Heel Strike	Phase

Discrete Metrics

Metric	Data Type	Units	Description
Step Length	Float	meters	Distance between heel strikes
Step Width	Float	meters	Lateral distance between feet
Stride Length	Float	meters	Distance between same foot heel strikes
Cadence	Float	steps/min	Number of steps per minute
Walking Speed	Float	m/s	Average walking speed
Step Time	Float	seconds	Time between heel strikes
Stride Time	Float	seconds	Time between same foot heel strikes
Stance Time	Float	seconds	Time foot is in contact with ground
Swing Time	Float	seconds	Time foot is not in contact with ground
Double Support Time	Float	seconds	Time both feet are in contact with ground
Single Support Time	Float	seconds	Time only one foot is in contact with ground
Knee Flexion	Float	degrees	Maximum knee flexion during gait cycle
Hip Flexion	Float	degrees	Maximum hip flexion during gait cycle
Ankle Dorsiflexion	Float	degrees	Maximum ankle dorsiflexion during gait cycle
Ground Reaction Force	Float	N	Maximum ground reaction force
Joint Angles at Peak Force	Float	degrees	Joint angles at instant of peak ground reaction force
Joint Velocities at Peak Force	Float	degrees/s	Joint velocities at instant of peak ground reaction force
Symmetry Index	Float	%	Comparison of left and right side parameters

Notes

All angular measurements follow ISB conventions
Kinematic data typically captured at 240Hz for Running Analysis