The Effect of Paretic Side Quadriceps Resistive Exercise on Weight-Bearing Asymmetry in Standing Position and Lean Muscle Mass of Subacute Stroke Patients
Objectives: To evaluate the efficacy of paretic side quadriceps resistive exercise on weight-bearing asymmetry and lean muscle mass of stroke patients.
Study design: Experimental clinical study.
Setting: Physical Medicine and Rehabilitation Department, Faculty of Medicine, Hasan Sadikin Hospital, Bandung.
Subjects: Patients with subacute stroke (2 weeks-6 months after the first stroke), aged 45-59 years old.
Methods: All subjects were given paretic side quadriceps resistive exercise with the intensity of 40% 1 RM, 25 repetitions per set, 3 sets per time, 3 times a week, for 8 weeks. Lean muscle mass and weight-bearing asymmetry were evaluated pre- and post- intervention .
Results: Twelve patients (8 males and 4 females) with mean age of 55.5 (SD 5.1) years were recruited. Lean muscle mass assessed with bioelectrical impedance analysis was 9.09 (SD 2.81) in pre- and 8.87 (2.73) in post- intervention whereas weight-bearing asymmetry was 9.52 (SD 5.63) in pre- and 5.98 (SD 5.445) in post- intervention. When comparing pre- and post- intervention outcomes, there was a significant difference in weight-bearing asymmetry (p = 0.034) but lean muscle mass did not significantly change (p = 0.146).
Conclusion: Quadriceps resistive exercise of paretic side was not effective in increasing lean muscle mass but it reduced weight-bearing asymmetry of subacute stroke patients. Therefore, a unilateral resistive exercise of a paretic side may be an effective intervention for stroke rehabilitation during subacute phase to improve weight-bearing symmetry.
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