Dowling J J, Cardone N
Department of Kinesiology, McMaster University, Hamilton, Ontario, Canada.
Int J Sports Med. 1994 Nov;15(8):453-9. doi: 10.1055/s-2007-1021087.
The purposes of this investigation were to examine the reduction in variability when muscle size is expressed relative to a functional group and its effect on improving muscle force prediction. Fourteen subjects performed maximum voluntary contractions (MVC) of elbow flexion and knee extension and had CT scans taken of the thigh and upper arm. The variation of relative cross-sectional area (RCSA) was significantly lower than CSA (p < 0.01). No significant differences were found between male and female RCSAs. A method of predicting individual muscle forces based on an MVC and RCSA is presented that reduced prediction errors to a third of those predicted on the basis of CSA and a specific tension or stress value of muscle.
本研究的目的是检验当肌肉大小相对于一个功能组来表示时变异性的降低情况及其对改善肌肉力量预测的影响。14名受试者进行了肘部屈曲和膝部伸展的最大自主收缩（MVC），并对大腿和上臂进行了CT扫描。相对横截面积（RCSA）的变异性显著低于横截面积（CSA）（p < 0.01）。男性和女性的RCSA之间未发现显著差异。提出了一种基于MVC和RCSA预测个体肌肉力量的方法，该方法将预测误差降低至基于CSA以及肌肉的特定张力或应力值所预测误差的三分之一。
