Blazevich Anthony J, Cannavan Dale, Horne Sara, Coleman David R, Aagaard Per
Centre for Exercise and Sports Science Research, Edith Cowan University, 100 Joondalup Drive, Joondalup, WA 6027, Australia.
Muscle Nerve. 2009 Apr;39(4):512-20. doi: 10.1002/mus.21259.
Changes in contractile rate of force development (RFD), measured within a short time interval from contraction initiation, were measured after a period of strength training that led to increases in muscle fascicle length but no measurable change in neuromuscular activity. The relationship between training-induced shifts in the moment-angle relation and changes in RFD measured to 30 ms (i.e., early) and 200 ms (i.e., late) from the onset of isometric knee extension force were examined; shifts in the moment-angle relation were used as an overall measure of changes in quadriceps muscle fascicle length. A significant proportion of the variance in RFD measured only in the initial contraction phase (0-30 ms) could be explained by shifts in the moment-angle relation (r=-0.66-0.71; R2=0.44-0.50). Training-induced increases in muscle fascicle length may lead to a reduced or complete lack of adaptive gains in contractile RFD, especially in the early contraction phase.
在一段导致肌肉束长度增加但神经肌肉活动无显著变化的力量训练期后，测量了从收缩开始起短时间内的力量发展收缩速率（RFD）变化。研究了训练引起的力矩-角度关系变化与等长膝关节伸展力开始后30毫秒（即早期）和200毫秒（即晚期）测量的RFD变化之间的关系；力矩-角度关系的变化被用作股四头肌肌肉束长度变化的总体衡量指标。仅在初始收缩阶段（0-30毫秒）测量的RFD方差的很大一部分可以由力矩-角度关系的变化来解释（r=-0.66-0.71；R2=0.44-0.50）。训练引起的肌肉束长度增加可能导致收缩性RFD的适应性增加减少或完全缺乏，尤其是在早期收缩阶段。
