Article

OBJECTIVE: To investigate the effects of different foot positions during the
sit-to-stand (STS) movements with stroke subjects. DESIGN: Cross-sectional.
SETTING: Research laboratory. PARTICIPANTS: Twelve chronic stroke subjects
(N=12). INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Differential
latency and electromyography (EMG) activity of the tibialis anterior, soleus,
quadriceps, and hamstring muscles of the affected leg as well as the movement
time, time of seat-off, weight symmetry, and rising index were obtained while the
subjects performed the STS movements by using 4 different strategies:
spontaneous; symmetric; asymmetric-1, with the affected foot behind; and
asymmetric-2, with the unaffected foot behind. RESULTS: Compared with the
spontaneous strategy, the soleus showed the greatest differential latency in the
asymmetric-2 strategy, the hamstrings had lower EMG activity in the symmetric
strategy, and the movement time was greater in the asymmetric strategies.
CONCLUSIONS: The asymmetric 2 strategy appeared to be the least favorable,
whereas the spontaneous and the symmetric strategies appeared to be more
favorable in improving the STS performance. Based on these findings, allowing the
subjects to adopt the spontaneous strategy or training of the symmetric strategy
could result in greater benefits for subjects with higher chronicity and higher
functional levels, such as those evaluated in the present study.

Langue : ANGLAIS