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Experimental study on the role of the ankle push off in the walk-to-run transition by means of a powered ankle-foot-exoskeleton

MALCOLM P; FIERS P; SEGERS V; VAN CAEKENBERGHE I; LENOIR M; CLERCQ DPM
GAIT POSTURE , 2009, vol. 30, n° 3, p. 322-327
Doc n°: 143219
Localisation : Documentation IRR

D.O.I. : http://www.doi.org/10.1016/j.gaitpost.2009.06.002
Descripteurs : DE72 - EXPLORATION EXAMENS BILANS - CHEVILLE, DF22 - EXPLORATION EXAMENS BILANS - MARCHE

The goal of this study was to analyse the role of the plantarflexor muscles in
the walk-to-run transition (WRT) by means of a powered ankle-foot-exoskeleton. 11
female subjects performed several WRT's on an accelerating treadmill while their
plantarflexors were assisted or resisted during push off. The WRT speed was lower
in the resist condition than in the control condition which reinforces hypotheses
from previous simulations, descriptive and experimental studies. There was no
increase in WRT speed in the assist condition which is in contrast to another
study where the plantarflexor push off was assisted indirectly by a horizontal
traction at waist level. The lack of effect from the assist condition in the
present study is possibly due to the narrowly focused nature of the experimental
manipulation.

Langue : ANGLAIS

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