Callard D, Gauthier A, Maffiuletti N, Davenne D, Van Hoecke J
Groupe Analyse du Mouvement, UFR STAPS Université de Bourgogne, BP 138, 21004, Dijon.
J Soc Biol. 2000;194(3-4):165-9.
The influence of time of day on muscular performance was studied. From part of the results of two different studies (EAS et EPS), the effects of sleep deprivation were appreciated. Seven times over the 24-h period, developed torque and myoelectric activity were estimated during maximal isometric voluntary contractions using an isokinetic dynamometer: elbow flexion for EAS in standardised sleep, and knee extension for EPS in complete sleep deprivation. The results showed nycthemeral changes in torque in both conditions (p < 0.005), with maximal values recorded at the beginning of night. Although during sleep deprivation (EPS) the rhythm followed neurophysiological factors, during EAS, this rhythm was accounted for by the variations in the contractile state of muscle.
研究了一天中的时间对肌肉性能的影响。从两项不同研究（EAS和EPS）的部分结果中，评估了睡眠剥夺的影响。在24小时期间进行了七次测量，使用等速测力计在最大等长自愿收缩期间估计肌肉产生的扭矩和肌电活动：EAS组在标准化睡眠状态下进行肘部屈曲测量，EPS组在完全睡眠剥夺状态下进行膝部伸展测量。结果显示，两种情况下扭矩均呈现昼夜变化（p < 0.005），最大值出现在夜间开始时。虽然在睡眠剥夺状态下（EPS组），这种节律遵循神经生理因素，但在EAS组中，这种节律是由肌肉收缩状态的变化引起的。
