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J Phys Ther Sci. 2015 Aug;27(8):2597-9. doi: 10.1589/jpts.27.2597. Epub 2015 Aug 21.

Effects of fast and slow squat exercises on the muscle activity of the paretic lower extremity in patients with chronic stroke.

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1
Department of Physical Therapy, Sunmoon University, Republic of Korea.

Abstract

[Purpose] The purpose of this study was to investigate the effects of the speed of squat exercises on paretic lower extremity muscle activity in patients with hemiplegia following a stroke. [Subjects and Methods] Ten stroke patients performed fast and slow squat exercises for 2 seconds and 8 seconds, respectively. The muscle activities of the paretic and non-paretic sides of the rectus femoris muscle, the biceps femoris muscle, and the tibialis anterior muscle were assessed and compared using surface electromyography. [Results] The paretic side of the rectus femoris muscle showed statistically significant differences in the fast squat exercise group, which demonstrated the highest muscle activity during the rapid return to the upright position. [Conclusion] The rectus femoris muscle showed the highest muscle activity during the return to the upright position during the fast squat exercise, which indicates that the rectus femoris muscle is highly active during the fast squat exercise.

KEYWORDS:

Chronic strokes; Fast and slow squat exercise; Muscle activity

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