Koriak Iu A
Fiziol Zh (1994). 1994 May-Aug;40(3-4):30-8.
The physiological features of two antagonistic muscle groups, the dorsiflexors and plantar flexors of the ankle, have been compared in 11 healthy subjects aged 15-17 years (+/- SE; 16 +/- 1.2 years). Contractile properties of plantar flexors of the foot, namely of tibialis anterior (TA) and extensors triceps surae (TS) have been estimated by mechanical parameters of voluntary and electrically evoked contractions. All test subjects exhibited tolerance to supramaximal force of electric stimulation of n. tibialis and n. peroneus profundus at a frequency of 150 impulses.s-1 (for TS) and 150 impulses.s-1 and 250 impulses.s-1 (for TA). TA displayed high velocity and force-velocity properties (p < 0.05-0.001); TS had high force parameters (p < 0.05-0.01). The magnitude of force deficiency observed during voluntary contraction of these muscles is lower in TA and higher in TS (p < 0.05). The results permit supposing that differences in contractile properties of the muscles under study depend on a various specific contribution of peripheral and CNS factors.
在11名年龄在15至17岁（±标准误；16±1.2岁）的健康受试者中，对踝关节的两组拮抗肌群，即背屈肌和跖屈肌的生理特征进行了比较。通过自主收缩和电诱发收缩的力学参数，评估了足部跖屈肌，即胫骨前肌（TA）和小腿三头肌（TS）的收缩特性。所有受试对象均能耐受以150次·秒⁻¹的频率（针对TS）以及150次·秒⁻¹和250次·秒⁻¹的频率（针对TA）对胫神经和腓深神经进行的超强电刺激。TA表现出较高的速度和力-速度特性（p<0.05 - 0.001）；TS具有较高的力量参数（p<0.05 - 0.01）。在这些肌肉自主收缩过程中观察到的力量不足程度，TA较低而TS较高（p<0.05）。结果表明，所研究肌肉收缩特性的差异取决于外周和中枢神经系统因素的不同具体作用。
