Laboratory of Kinesiologic Electromyography and Kinematic, Universidade Estadual de Londrina, Brazil.
Int J Sports Med. 2011 Dec;32(12):947-52. doi: 10.1055/s-0031-1283182. Epub 2011 Nov 3.
Flexibility is a key component of physical fitness. It has been suggested that measures of physical fitness components may vary throughout the day. The aim of this study was to analyse the effects of the time of day on flexibility performance. 26 men (mean age=25.4 years, SD=2.5) were evaluated by hip flexion on kinematic analysis and also by an absolute score in the modified Sit-and-Reach test during a repeated measure design. This was done during 3 experimental sessions, which took place at 8:00 a.m., 1:00 p.m. and 6:00 p.m., in random order. All subjects were previously familiarized with the test parameters. There was a diurnal variation only in the modified Sit-and-Reach test score between 8:00 a.m and 6:00 p.m. (P=0.01). There was no significant difference in the hip kinematic analysis between hours. These findings suggest that flexibility performance in the modified Sit-and-Reach test, in absolute scores, is affected by the time of day, with higher performance in the evening.
灵活性是身体健康的一个关键组成部分。有人认为，身体成分的测量可能会在一天中发生变化。本研究旨在分析一天中时间对柔韧性表现的影响。26 名男性（平均年龄=25.4 岁，标准差=2.5）通过运动分析评估髋关节屈曲度，同时在重复测量设计中通过改良坐立前伸测试的绝对分数进行评估。这是在 3 个实验会话中进行的，时间分别为上午 8:00、下午 1:00 和下午 6:00，随机进行。所有受试者之前都熟悉测试参数。仅在改良坐立前伸测试得分上，上午 8:00 至下午 6:00 之间存在昼夜变化（P=0.01）。髋关节运动分析在各小时之间没有显著差异。这些发现表明，改良坐立前伸测试中绝对分数的柔韧性表现受到时间的影响，晚上表现更好。
