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Using a Split-belt Treadmill to Evaluate Generalization of Human Locomotor Adaptation

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Published on: August 23, 2017

Overground vs. treadmill walk-to-run transition.

I Van Caekenberghe¹, K De Smet, V Segers

¹Ghent University, Department of Movement and Sports Sciences, Watersportlaan 2, B-9000 Ghent, Belgium. ine.vancaekenberghe@ugent.be

|March 12, 2010

Summary

Determining walk-to-run transition (WRT) speed is key. This study found treadmill WRT speed is lower than overground, even after accounting for acceleration and lab movement, suggesting a persistent treadmill influence.

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Area of Science:

Biomechanics
Human locomotion
Gait analysis

Background:

Determining walk-to-run transition (WRT) speed is crucial in gait research.
Previous studies reported higher overground WRT speeds than treadmill WRT speeds.
This difference may stem from lower acceleration magnitudes on treadmills.

Purpose of the Study:

To compare spontaneous overground WRT with treadmill WRT at comparable accelerations.
To investigate the influence of lab reference frame movement corrections on treadmill WRT.
To identify speed jumps during WRT on a treadmill.

Main Methods:

Comparison of spontaneous overground WRT with treadmill WRT under controlled acceleration.
Implementation of calculation procedures to correct for lab reference frame movement.
Analysis of speed jumps and transition speeds during WRT.

Main Results:

A speed jump, previously unique to overground WRT, was detected on the treadmill.
Treadmill WRT speed (2.61 m/s) was lower than overground WRT speed (2.85 m/s).
The difference in WRT speed was smaller than previously assumed, attributed to a larger speed jump and higher initial transition speed overground.

Conclusions:

Even with controlled acceleration and reference frame corrections, a treadmill influence on WRT speed persists.
The detected speed jump on the treadmill suggests a more comparable transition mechanism to overground.
Further research is needed to fully elucidate the remaining differences in WRT speed between overground and treadmill locomotion.