Peixoto Gustavo H, Andrade Andre G, Menzel Hans J K, Araújo Silvia R S, Pertence Antônio E M, Chagas Mauro H
Laboratory of Biomechanics, Center of Sports Excellence, Federal University of Minas Gerais, Avenida Antônio Carlos, 6627, Campus Pampulha, Belo Horizonte, Minas Gerais, 31270-901, Brazil.
Muscle Nerve. 2015 May;51(5):761-4. doi: 10.1002/mus.24593. Epub 2015 Mar 27.
We investigated the viscoelastic stress relaxation response before and after a 10-week hamstrings static stretch program.
The maximal range of motion (ROMmax ) and maximal torque (Torquemax ) were assessed before and after a 10-week stretching program. Six 30-s static stretches at a predetermined torque were performed, and the relative change in stress relaxation was examined.
ROMmax and Torquemax increased by 53% and 82%, respectively (P < 0.001). The relative stress relaxation (RSR) decreased significantly for repetition 1 when comparing the pretest (25%) and posttest (21%) values (P = 0.003). A significant decrease was also observed for repetitions 2 and 3 (P < 0.014), with no significant difference in repetitions 4-6 (P > 0.056).
Individuals who participated in a 10-week hamstrings passive-static stretch program had a reduced RSR response. A higher stretch intensity or longer duration may be necessary to achieve RSRs similar to those reported before the stretch program.
我们研究了为期10周的腘绳肌静态拉伸训练前后的粘弹性应力松弛反应。
在为期10周的拉伸训练前后评估最大运动范围（ROMmax）和最大扭矩（Torquemax）。以预定扭矩进行6次30秒的静态拉伸，并检查应力松弛的相对变化。
ROMmax和Torquemax分别增加了53%和82%（P < 0.001）。比较测试前（25%）和测试后（21%）的值时，第1次重复的相对应力松弛（RSR）显著降低（P = 0.003）。第2次和第3次重复也观察到显著下降（P < 0.014），第4 - 6次重复无显著差异（P > 0.056）。
参与为期10周腘绳肌被动静态拉伸训练的个体RSR反应降低。可能需要更高的拉伸强度或更长的持续时间才能实现与拉伸训练前报告的类似的RSR。
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