Article

Unsteady state gait involving net accelerations has been studied overground and
on a treadmill. Yet it has never been tested if and to what extent both set-ups
are mechanically equal. This study documents the differences in ground reaction
forces for accelerated running on an instrumented runway and running on an
accelerating treadmill by building a theoretical framework which is
experimentally put to the test. It is demonstrated that, in contrast to
overground, no mean fore-after force impulse should be generated to follow an
accelerating treadmill due to the absence of linear whole body acceleration.
Accordingly, the adaptations in the braking phase (less braking) and propulsive
phase (more propulsion) to accelerate overground are not present to follow an
accelerating treadmill. It can be concluded that running on an accelerating
treadmill is mechanically different from accelerated running overground.
CI - Copyright (c) 2012 Elsevier B.V. All rights reserved.

Langue : ANGLAIS