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Related Experiment Video

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Postural Organization of Gait Initiation for Biomechanical Analysis Using Force Platform Recordings

Postural Organization of Gait Initiation for Biomechanical Analysis Using Force Platform Recordings

Published on: July 26, 2022

External forces during actual acceleration across transition speed.

Veerle Segers¹, Peter Aerts, Matthieu Lenoir

¹Department of Movement and Sports Sciences, Ghent University, Belgium.

Journal of Applied Biomechanics

|December 17, 2008

Summary

The walk-to-run transition (WRT) and run-to-walk transition (RWT) occur in a single step but involve distinct kinetic adaptations. WRT adaptations happen before the transition, while RWT adaptations occur both before and after the transition step.

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Area of Science:

Biomechanics
Human locomotion
Gait analysis

Background:

Understanding gait transitions is crucial for analyzing human movement and athletic performance.
The kinetics of accelerating and decelerating across transition speeds remain incompletely understood.

Purpose of the Study:

To investigate the kinetic differences between the walk-to-run transition (WRT) and run-to-walk transition (RWT).
To identify transitional adaptation processes occurring before and after the actual gait change.

Main Methods:

Nine women underwent gait transition trials on a 50-m walkway with controlled acceleration (0.17 m.s-2).
Vertical ground reaction forces (GRFs) and center of pressure (COP) were measured for six steps surrounding the transition.
Analysis focused on identifying kinetic deviations indicative of a transition process.

Main Results:

Both WRT and RWT are realized within a single step, marked by distinct GRF and COP trajectories.
WRT involves kinetic adaptations in the step preceding the transition.
RWT shows preparatory adaptations before and completion adaptations in the first walking step after the transition.

Conclusions:

WRT and RWT are distinct phenomena with unique kinetic profiles.
The temporal organization of kinetic adaptations differs significantly between WRT and RWT.