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자료유형
학술저널
저자정보
저널정보
대한재활의학회 Annals of Rehabilitation Medicine Annals of Rehabilitation Medicine 제35권 제6호
발행연도
2011.1
수록면
887 - 896 (10page)

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Objective To provide the off -loading knee brace was designed relief for the pain associated with osteoarthritis by reduce loads on the degenerative compartment of the knee. This study examined the eff ects of the off -loading knee brace on activation of femoral muscles during squatting, slow and fast walking exercise in healthy young individuals. Method Ten healthy male subjects without a history of knee pain were recruited. Each subject was asked to do squatting, slow and fast walking exercises with a brace secured to the dominant leg. The same exercises were repeated without the brace. Surface electromyographic (sEMG) data was collected from the vastus medialis oblique (VMO), vastus lateralis (VL) and biceps femoris (BF) muscles from the dominant side of the leg. All dynamic root mean squre (RMS) values of sEMG were standardized to static RMS values of the maximal isometric contraction and expressed as a percentage of maximal activity. Results We found that VMO activity was signifi cantly decreased with application of the off -loading knee brace during squatting and fast walking exercise. However there were no signifi cant diff erences in VMO activity with application of the off -loading knee brace during slow walking exercise. Conclusion These results suggest that the external moment of the brace which effectively stabilized the patella in the movement in which the knee joints become relatively unstable. Th e brace could be useful in the short term,but for long-term use, weakening of the VMO is predicted. Therefore the program of selective muscular strength strengthening for the VMO should be emphasized.

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