肌肉协同激活：一种普遍的还是局部的运动控制策略？
Muscle coactivation: a generalized or localized motor control strategy?
机构信息
Department of Physical Therapy and Rehabilitation Science, Carver College of Medicine, 1-252 Medical Education Building, University of Iowa, Iowa City, Iowa, 52242, USA; Virtual Soldier Research, Center for Computer-Aided Design, College of Engineering, University of Iowa, Iowa City, Iowa.
出版信息
Muscle Nerve. 2013 Oct;48(4):578-85. doi: 10.1002/mus.23801. Epub 2013 Aug 30.
INTRODUCTION
We examined generalized versus joint-specific influences on muscle coactivation.
METHODS
Muscle coactivation was assessed during maximal isometric and isokinetic knee and elbow joint extension moments in 48 healthy subjects (27 men). Local (joint-specific) and generalized (person-specific) contributions were examined using a combination of statistical tests, including regression with generalized estimating equations (GEEs), exploratory factor analysis, and cluster analysis.
RESULTS
GEEs produced similar significant coefficients for gender and joint; contraction type and test condition (angle or velocity) were not significant. Factor analysis indicated 2 joint-based factors, and cluster analysis indicated 2 groups of individuals, those with and without elevated coactivation at the knee and elbow. Women exhibited greater coactivation at both joints, but no consistent influences of angle or velocity were observed at either joint.
CONCLUSION
Muscle coactivation is a neuromuscular control response determined by local, joint-specific, and generalized, individual-specific influences.
简介
我们研究了肌肉共同激活的广义影响与关节特异性影响。
方法
48 名健康受试者（27 名男性）进行了最大等长和等速膝关节和肘关节伸展力矩时的肌肉共同激活评估。使用统计测试组合（包括广义估计方程（GEE）回归、探索性因子分析和聚类分析）检查局部（关节特异性）和广义（个体特异性）贡献。
结果
GEE 为性别和关节产生了相似的显著系数；收缩类型和测试条件（角度或速度）不显著。因子分析表明有 2 个基于关节的因素，聚类分析表明有 2 组个体，一组在膝关节和肘关节有升高的共同激活，另一组没有。女性在两个关节处都表现出更大的共同激活，但在任何一个关节处都没有观察到角度或速度的一致影响。
结论
肌肉共同激活是一种由局部、关节特异性和广义的个体特异性影响决定的神经肌肉控制反应。
Zotero 插件