人体膝关节伸肌的肌肉体积与收缩特性之间的关系。
Relationship between muscle volume and contractile properties of the human knee extensors.
作者信息
Behrens Martin, Brown Niklas, Bollinger Robert, Bubeck Dieter, Mau-Moeller Anett, Weippert Matthias, Zschorlich Volker, Bruhn Sven, Alt Wilfried
机构信息
a Institute of Sport Science, University of Rostock, Ulmenstraße 69, 18057 Rostock, Germany.
b Department of Sport and Exercise Science, University of Stuttgart, Allmandring 28, 70569 Stuttgart, Germany.
出版信息
Appl Physiol Nutr Metab. 2016 Jan;41(1):110-3. doi: 10.1139/apnm-2015-0378. Epub 2015 Oct 7.
The present study was designed to investigate the relationship between volume and electrically evoked twitch properties of the quadriceps muscle. Supramaximal single and doublet stimulation of the femoral nerve was used to assess contractile properties at 45° and 80° knee flexion. Muscle volume was measured using a 1.5-Tesla magnetic resonance imaging scanner. Quadriceps muscle volume was only significantly correlated (r = 0.629) with peak twitch torque induced by doublet stimulation at 80° but not at 45° knee flexion.
本研究旨在探讨股四头肌体积与电诱发抽搐特性之间的关系。采用股神经超最大单刺激和双刺激来评估膝关节屈曲45°和80°时的收缩特性。使用1.5特斯拉磁共振成像扫描仪测量肌肉体积。股四头肌体积仅与膝关节屈曲80°时双刺激诱发的峰值抽搐扭矩显著相关（r = 0.629），而与膝关节屈曲45°时无关。
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