一项为期10周的伸展训练计划前后，腘绳肌的粘弹性应力松弛情况。

Viscoelastic stress relaxation in the hamstrings before and after a 10-week stretching program.

作者信息

Peixoto Gustavo H, Andrade Andre G, Menzel Hans J K, Araújo Silvia R S, Pertence Antônio E M, Chagas Mauro H

机构信息

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.

出版信息

Muscle Nerve. 2015 May;51(5):761-4. doi: 10.1002/mus.24593. Epub 2015 Mar 27.

DOI:10.1002/mus.24593

PMID:25656830

Abstract

INTRODUCTION

We investigated the viscoelastic stress relaxation response before and after a 10-week hamstrings static stretch program.

METHODS

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.

RESULTS

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).

CONCLUSIONS

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.

摘要

引言

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。

方法

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。

结果

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）。