Blood flow restriction combined with nordic hamstring exercise does not impair endothelial function but does not increase neuromuscular activation

IF 1.3 4区医学 Q4 PHYSIOLOGY

Clinical Physiology and Functional Imaging Pub Date : 2025-01-06 DOI:10.1111/cpf.12926

Fuat Yuksel, Nevin Guzel, Ömer Burak Tor, Koray Akkan

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引用次数: 0

Abstract

Background

Optimizing hamstring exercises is crucial for injury prevention and performance. This study explored the effects of blood flow restriction (BFR) during Nordic hamstring exercises (NHE) on hamstring muscle activation and vascular function.

Methods

A randomized, single-blind study included 14 healthy, physically active males (mean age: 27.5 years). Each participant's lower extremities were randomly assigned to BFR or control groups. In the BFR group, blood flow was restricted to 60% of arterial occlusion pressure. Participants performed three sets of five NHE repetitions. Endothelial function was assessed by flow-mediated dilation (FMD) via Doppler ultrasound before and after exercise. Surface electromyography (EMG) recorded neuromuscular activation of the semitendinosus (ST) and biceps femoris (BF) muscles during exercises.

Results

FMD values showed no significant differences between BFR and control groups (F(1,13) = 0.156, p = 0.7, partial η² = 0.012). Neuromuscular activations of ST and BF muscles decreased across sets in both groups but did not differ significantly between groups (ST: F(2,26) = 1.172, p = 0.448, partial η² = 0.09; BF: F(2,26) = 1.442, p = 0.527, partial η² = 0.1).

Conclusions

BFR did not produce acute additional effects on muscle activation or endothelial function compared to standard NHE. This suggests that incorporating BFR in NHE may not enhance immediate neuromuscular or vascular responses. Further research is needed to evaluate its long-term benefits.

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血流限制结合北欧腿筋运动不会损害内皮功能，但不会增加神经肌肉的激活

背景：优化腘绳肌锻炼对损伤预防和表现至关重要。本研究探讨了北欧腿筋运动（NHE）中血流量限制（BFR）对腿筋肌肉激活和血管功能的影响。方法采用随机、单盲研究方法，纳入14名健康、体力活动的男性（平均年龄27.5岁）。每个参与者的下肢被随机分配到BFR组或对照组。在BFR组，血流量被限制在动脉闭塞压的60%。参与者做了三组每组五次的NHE重复。运动前后通过多普勒超声血流介导扩张（FMD）评估内皮功能。表面肌电图（EMG）记录了运动时半腱肌（ST）和股二头肌（BF）的神经肌肉激活情况。结果FMD值BFR组与对照组比较差异无统计学意义（F(1,13) = 0.156, p = 0.7，偏η²= 0.012）。两组间ST肌和BF肌的神经肌肉激活度均下降，但组间无显著差异(ST: F(2,26) = 1.172, p = 0.448，偏η²= 0.09；BF: F(2,26) = 1.442, p = 0.527，偏η²= 0.1)。结论：与标准NHE相比，BFR不会对肌肉激活或内皮功能产生急性额外影响。这表明在NHE中加入BFR可能不会增强神经肌肉或血管的即时反应。需要进一步的研究来评估其长期效益。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Clinical Physiology and Functional Imaging 医学-生理学

CiteScore

3.40

自引率

5.60%

发文量

审稿时长

6-12 weeks

期刊介绍： Clinical Physiology and Functional Imaging publishes reports on clinical and experimental research pertinent to human physiology in health and disease. The scope of the Journal is very broad, covering all aspects of the regulatory system in the cardiovascular, renal and pulmonary systems with special emphasis on methodological aspects. The focus for the journal is, however, work that has potential clinical relevance. The Journal also features review articles on recent front-line research within these fields of interest. Covered by the major abstracting services including Current Contents and Science Citation Index, Clinical Physiology and Functional Imaging plays an important role in providing effective and productive communication among clinical physiologists world-wide.