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題名 | 髖關節及膝關節角度對膝部肌力的影響= |
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作者 | 曹昭懿; 賴金鑫; |
期刊 | 中華民國物理治療學會雜誌 |
出版日期 | 19900900 |
卷期 | 15 1990.09[民79.09] |
頁次 | 頁1-6 |
分類號 | 418.92 |
語文 | chi |
關鍵詞 | 肌力; 角度; 膝部; 膝關節; 髖關節; |
中文摘要 | 髖關節及膝關節角度改變均影響膝部肌肉的長度,進而影響這些肌肉的 張力,因比,此二關節所在的角度大大地影響了訓凍及測試膝部肌力的結果。本 實驗的目的即在於找出此二關節最適合肌肉作用的位置。共有31位正常人參與本 實驗,本實驗乃利用Cybex II肌力測驗儀來測試膝屈肌及伸肌之最大等張收縮肌 肉張力,在實驗中,髖關節共有五種姿勢,每種姿勢下膝關節角度變換5次;因此, 每一位受試者均在25種姿勢下測試其膝部肌肉力量。實驗結果顯示,膝關節越彎 時,膝伸肌肌力越強,膝屈肌則相反,膝關節越彎時肌力越弱。髖關節對膝部肌 力的影響,也呈現類似的情況。坐正時對膝伸肌最為不利,但對膝屈肌最有利。 坐時身體往後仰(即髖關節彎曲較少)則剛好相反,對伸肌有利而不利於屈肌。由 本實驗可知,髖關節及膝關節的位置對膝部肌力影響很大。對膝伸肌而言,仰臥 或坐時身體往後仰加上膝關節彎曲90度為最有利的姿勢;相反地,對膝屈肌而 言,則以坐正加上膝關節伸直最適合用力。 |
英文摘要 | The positions of hip and knee joints in-fluence the length of knee muscles and thetension of these muscles changes consequently.The positions in which strengthening and testingperformed are therefore important to gain thebest performance of knee muscles. The purposesof this study were to find the influence of position changes to the maximal isometricstrength of knee muscles. Thirty-one normal subjects involved inthis study. They were tested with Cybex [Idynamometer for the maximal isometric strengthof knee extensor and flexor muscles. The musclestrength was tested at 5 hip positions combinedwith 5 knee positions. Therefore, there were25 testing positions used. The results showed that the more kneeflexed, the more extensor torque developed(p<0.01). However, the flexor muscles showedquite opposite results. The more knee flexed,the less the flexor torque generated (p<0.01).Considering the hip positions, sitting uprightwas most disadvantageous for knee extensormuscle (p<0.01). For knee flexor muscle, themore hip flexed, the more flexor torque wouldbe generated. It was concluded that length of knee musclechanged with hip and knee positions would influence the torque generated from knee muscles.Therefore, supine or sitting with leaning backward combine with 90@ flexion of knee wassuggested to gain the maximal torque of kneeextensor. Oppositely, sitting upright with kneestraight was suggested for maximal flexortorque. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。