Effects of lifting the non-paretic foot on muscle activity during the
semi-squat exercise in hemiplegic patients |
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| Authors: | Dong-Kyu Lee Il-Young Yu In-Gui Jung Jae-Seop Oh |
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| Institution: | 1) Department of Physical Therapy, Graduate School, Inje University, Republic of Korea;2) Department of Physical Therapy, College of Biomedical Science and Engineering, Inje University, Republic of Korea |
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| Abstract: | Purpose] This study compared the electromyographic activity of the quadriceps in
hemiplegic patients during the downward, maintenance, and upward phases of squat exercises
performed with the feet parallel and with the non-paretic foot lifted. Subjects] A total
of 17 hemiplegic patients (9 males and 8 females) volunteered for this study. Methods]
All subjects performed squat exercises with the knees flexed to 30° and with the feet
parallel (shoulder-width apart) or with lifting of the non-paretic foot (normalized to 25%
of the knee height). Results] The activity of the rectus femoris, vastus medialis
oblique, and vastus lateralis muscles was significantly higher during squat exercises
performed with the non-paretic foot lifted than with the feet parallel to each other. The
activity of all muscles during the maintenance phase of the exercises was greater than
that during the downward and upward phases. Conclusion] Lifting the non-paretic foot
during squats may represent an effective exercise for motor function rehabilitation in
hemiplegic patients.Key words: EMG, Foot lifting, Squat exercise |
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