The Effects of High-Intensity, Short-Duration and Low-Intensity, Long-Duration Hamstrings Static Stretching on Contralateral Limb Performance

IF 2.2 Q2 SPORT SCIENCES

Sports Pub Date : 2024-09-18 DOI:10.3390/sports12090257

Emily J. Philpott, Mohammadmahdi Bahrami, Mahta Sardroodian, David G. Behm

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引用次数: 0

Abstract

Introduction: Increases in contralateral range of motion (ROM) have been shown following acute high-intensity and high-duration static stretching (SS) with no significant change in contralateral force, power, and muscle activation. There are currently no studies comparing the effects of a high-intensity, short-duration (HISD) or low-intensity, long-duration (LILD) SS on contralateral performance. Purpose: The aim of this study was to examine how HISD and LILD SS of the dominant leg hamstrings influence contralateral limb performance. Methods: Sixteen trained participants (eight females, eight males) completed three SS interventions of the dominant leg hamstrings; (1) HISD (6 × 10 s at maximal point of discomfort), (2) LILD (6 × 30 s at initial point of discomfort), and (3) control. Dominant and non-dominant ROM, maximal voluntary isometric contraction (MVIC) forces, muscle activation (electromyography (EMG)), and unilateral CMJ and DJ heights were recorded pre-test and 1 min post-test. Results: There were no significant contralateral ROM or performance changes. Following the HISD condition, the post-test ROM for the stretched leg (110.6 ± 12.6°) exceeded the pre-test (106.0 ± 9.0°) by a small magnitude effect of 4.2% (p = 0.008, d = 0.42). With LILD, the stretched leg post-test (112.2 ± 16.5°) exceeded (2.6%, p = 0.06, d = 0.18) the pre-test ROM (109.3 ± 16.2°) by a non-significant, trivial magnitude. There were large magnitude impairments, evidenced by main effects for testing time for force, instantaneous strength, and associated EMG. A significant ROM interaction (p = 0.02) showed that with LILD, the stretched leg significantly (p = 0.05) exceeded the contralateral leg by 13.4% post-test. Conclusions: The results showing no significant increase in contralateral ROM with either HISD or LILD SS, suggesting the interventions may not have been effective in promoting crossover effects.

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高强度、短时间和低强度、长时间腘绳肌静态拉伸对对侧肢体表现的影响

简介：急性高强度和高持续时间静态拉伸（SS）后，对侧运动范围（ROM）有所增加，但对侧力量、功率和肌肉激活没有明显变化。目前还没有研究比较高强度、短持续时间（HISD）或低强度、长持续时间（LILD）静态拉伸对对侧表现的影响。目的：本研究旨在探讨优势腿腘绳肌的 HISD 和 LILD SS 如何影响对侧肢体的表现。研究方法： 16 名训练有素的参与者（8 名女性，1 名男性，1 名女性16 名训练有素的参与者（8 名女性，8 名男性）完成了三种主导腿腘绳肌 SS 干预：（1）HISD（6 × 10 秒，最大不适点）；（2）LILD（6 × 30 秒，初始不适点）；（3）对照组。在测试前和测试后 1 分钟记录主导和非主导 ROM、最大自主等长收缩力 (MVIC)、肌肉活化（肌电图 (EMG)）以及单侧 CMJ 和 DJ 高度。结果：对侧 ROM 或表现没有明显变化。在 HISD 条件下，拉伸腿的测试后 ROM（110.6 ± 12.6°）比测试前（106.0 ± 9.0°）高出 4.2% 的小幅效应（p = 0.008，d = 0.42）。对于 LILD，伸腿后测试（112.2 ± 16.5°）超过了测试前 ROM（109.3 ± 16.2°）（2.6%，p = 0.06，d = 0.18），但幅度不大，不显著。测试时间对力量、瞬时力量和相关肌电图的主效应表明，存在较大程度的损伤。ROM 的显著交互作用（p = 0.02）表明，在 LILD 条件下，拉伸腿在测试后明显（p = 0.05）超过对侧腿 13.4%。结论结果显示，HISD 或 LILD SS 均未明显增加对侧的 ROM，这表明干预措施在促进交叉效应方面可能并不有效。

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来源期刊

Sports SPORT SCIENCES-

CiteScore

4.10

自引率

7.40%

发文量

167

审稿时长

11 weeks