Table of Contents
ISRN Rehabilitation
Volume 2012, Article ID 295038, 7 pages
http://dx.doi.org/10.5402/2012/295038
Research Article

Weight-Bearing and Effort Distributions at the Lower Limbs during the Five-Repetition Sit-to-Stand Test in Hemiparetic and Healthy Individuals

1Laboratoire de Pathokinésiologie, Centre de Recherche Interdisciplinaire en Réadaptation, Institut de Réadaptation Gingras-Lindsay-de-Montréal, 6300 Avenue Darlington, Montréal, QC, Canada H3S 2J4
2École de Réadaptation, Faculté de Médecine, Université de Montréal, C.P.6128 Succ. Centre-Ville, Montréal, QC, Canada H3C 3J7

Received 5 July 2011; Accepted 14 September 2011

Academic Editor: C. I. Renner

Copyright © 2012 Anabèle Brière et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Background. The weight-bearing (WB) and effort distributions during the five-repetition sit-to-stand test (5R-STS) were assessed in healthy and hemiparetic subjects and were compared to the distributions obtained for a single STS task (1-STS). Methods. Eighteen hemiparetic subjects and 12 controls were included. The WB distribution and time were computed using the vertical ground reaction forces. The knee muscles' effort distribution was quantified with the electromyographic (EMG) data of the STS transfers expressed relatively to the EMG values of maximal strength assessments. Results. In both groups, the time, WB, and effort distributions did not differ between repetitions of the 5R-STS test. The WB and effort distributions of the first repetition were more asymmetrical than those for the 1-STS for the hemiparetic subjects only. Conclusions. Since no changes were found between repetitions, the 5R-STS test might not be demanding enough. The hemiparetic subjects adopt different WB and effort distribution strategies according to the number of STSs to complete.