Ratios of Vastus Medialis Obliques to Vastus Lateralis on Different Knee Positions in Healthy Female

健康女性在不同膝關節姿勢下其股內側斜肌之於股外側肌之肌力比值

羅震宇(Chen-Yu Lo) ； 林秀真(Hsiu-Chen Lin) ； 陳淑雅(Shu-Ya Chen) ； 陳妍慧(Yen-Huey Chen)

《中華民國物理治療學會雜誌》 21卷2期 (1996/04) Pp. 94-102

https://doi.org/10.29616/JPTAROC.199604.0002

摘要

二十七位健康的女性，在16種不同的等速膝關節收縮的情況，使用表面肌電圖記錄其股內側斜肌(VMO)與股外側肌(VL)的肌電活動的比值。此實驗的目的在於尋找能選擇性促進股內側斜肌的肌電活動的膝彎曲角度以及承重與髖關節內收對肌力比值的影響。本篇研究顯示膝關節彎曲的角度與下肢承重與否會影響股內側斜肌對股外側肌的肌力比值。在膝彎曲60˚到90˚之間以及承重狀態下會增加內側斜肌對股外側肌的肌力比值，而髖關節內收則沒有顯著的影響，除了在承重狀態下。此篇結果建議在彎曲的膝關節與承重的狀態下加上髖關節內收，股內側斜肌應可被選擇性的加強。

關鍵字

肌電圖 ； 肌肉收縮 ； 髖骨股骨關節 ； 膝關節復健

並列摘要

Using surface electromyography, the myoelectric activity of the vastus medialis obliques (VMO) and vastus lateralis (VL) were recorded under sixteen different isometric knee extension conditions in 27 healthy female subjects. The purpose of the study was to identify the optimal angle of knee flexion for selectively facilitating the activity of VMO relative to the VL. Additionally, the influence of weight bearing and hip adduction was investigated. It was found that the angle of knee flexion and weight-bearing had an effect on the ratio of the VMO/VL. At 60˚ to 90˚ of knee flexion and weight bearing situation, the ratio of the VMO/VL was greater than other situations. Hip adduction did not have significant influence, except in weight-bearing condition. The results of this study suggest that the VMO may be selectively activated on flexed knee in weight-bearing condition with the assistance of hip adduction.

並列關鍵字

Electromyography ； Muscle contraction ； Patellofemoral joint ； Knee rehabilitation