Analysis of muscle coordination strategies in cycling.
Analysis of muscle coordination strategies in cycling.
复制标题
自行车运动中肌肉协调策略分析。
DOI：
10.1109/86.867878
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发表时间：
2000
期刊：
影响因子：
--
通讯作者：
R. Gregor
中科院分区：
文献类型：
--
作者：
B. Prilutsky;R. Gregor
在熟练的多关节任务中使用的刻板肌肉激活模式的功能意义尚未得到很好的理解。优化方法可以深入了解肌肉协调的功能意义。本研究的目的是通过使用不同的优化标准来预测骑车时推和拉踏板的肌肉力量模式，并将预测结果与肌电图（EMG）模式进行比较。为了实现研究的目的，1)通过比较肌电图和逆动力学计算的关节力矩，研究肌肉长度和速度变化对骑车过程中肌电-肌肉力关系的贡献；2)使用13种不同的优化标准预测5名受试者骑车过程中个体肌肉力的模式。3)利用预测归一化肌电图效果最好的判据的性质来解释骑车运动中肌肉协调性的特征及其功能意义。结果表明，在预测肌肉激活的相对大小和模式时，最小肌肉应力立方之和的标准表现出最好的性能。基于这一标准，建议肌肉协调策略在骑行中的功能意义可能是最小化疲劳和/或感知努力。
The functional significance of the stereotypical muscle activation patterns used in skilled multi-joint tasks is not well understood. Optimization methods could provide insight into the functional significance of muscle coordination. The purpose of this study was to predict muscle force patterns during cycling by pushing and pulling the pedal using different optimization criteria and compare the predictions with electromyographic (EMG) patterns. To address the purpose of the study, 1) the contribution of muscle length and velocity changes to EMG-muscle force relationships during cycling was examined by comparing joint moments calculated from EMG and inverse dynamics, 2) patterns of individual muscle forces during cycling of five subjects were predicted using 13 different optimization criteria, and 3) the properties of the criterion with the best performance in predicting the normalized EMG were used to explain the features and functional significance of muscle coordination in cycling. It was shown that the criterion that minimizes the sum of muscle stresses cubed demonstrated the best performance in predicting the relative magnitude and patterns of muscle activation. Based on this criterion, it was suggested that the functional significance of muscle coordination strategy in cycling may be minimization of fatigue and/or perceived effort.
影响因子：
2.4
作者：
BRAND, RA;PEDERSEN, DR;FRIEDERICH, JA
通讯作者：
FRIEDERICH, JA
影响因子：
--
作者：
F. Zajac
通讯作者：
F. Zajac