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An examination of constraints affecting the intralimb coordination of hemiparetic gait
BARELA JA; WHITALL J; BLACK P
HUM MOV SCI , 2000, vol. 19, p. 251-273 Doc n°: 99710 Localisation : Documentation IRR Descripteurs : AF211 - HEMIPLEGIE, DF23 - PATHOLOGIE - MARCHE A dynamical systems approach to the study of locomotor intralimb coordination in those with hemiparesis led to an examination of the utility of the shank-thigh relative phase (RP) as a collective variable and the identification of potential constraints that may shape this coordination. Eighteen non-disabled individuals formed three groups matched to the age and gender of six participants with chronic right hemiparesis. The three groups differed in the constraints imposed on their walking : 1. Walking at their preferred walking speed, 2. Walking as slowly as those with hemiparesis, and 3. walking slowly with a right ankle-foot orthosis (AFO). The results revealed an asymmetry in intralimb coordination between the unaffected and affected leg of those with hemiparesis localized to the latter third of the gait cycle when the limb is advanced from the end of stance to the reestablishment of a new stance. Walking slowly with or without an AFO resulted in non measureable effect in the non-disabled, but accounts for 22% of the variance in the intralimb coordination of the hemiplegic's affected limb and 16% in the unaffected limb. The AFO offered little additional contribution. Langue : ANGLAIS Tiré à part : OUI Identifiant basis : 2001215650 |
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