Acute effects of blood flow restriction on EMG activity of arm muscles during karate tsuki strike in young men

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-05-05 DOI:10.1016/j.jbmt.2024.05.005

Mohammad Soltani , Mehran Shafiei , Atefeh Ariabod , Farid Farhani , Ali Abbasi

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引用次数: 0

Abstract

Background

The positive effect of Blood Flow Restriction (BFR) on muscular performance have been documented in previous researches. However, its effect on agonist-antagonist cocontraction during fist movement has not been considered from a biomechanical perspective. The purpose of this research was to investigate the acute effect of BFR on EMG activity of arm muscles during karate tsuki strike in young men.

Methods

20 professional young, male karatekas voluntarily participated in this research. Biceps and triceps muscular activity and their cocontraction in the right arm (with BFR) and the left arm (control) were captured and compared using an EMG device during tsuki strike until exhaustion.

Results

The results of independent t-test showed that biceps and triceps EMG activity in the BFR arm were significantly higher than the control arm (24.45% and 27.78% for biceps and triceps, respectively). Moreover, muscular cocontraction in BFR arm was significantly less than control arm (32.05%).

Conclusion

The results indicate that acute arm BFR can increase arm muscle EMG activity during tsuki strike until exhaustion, which indirectly it is a sign for activation of type II motor units. However, BFR decreased agonist-antagonist cocontraction, which may increase the risk for injury during elbow extension in throw fist.

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血流限制对年轻男子空手道击打时手臂肌肉肌电图活动的急性影响

背景以前的研究已经证实了血流限制（BFR）对肌肉表现的积极影响。然而，尚未从生物力学角度考虑其对握拳运动中激动剂-拮抗剂协同收缩的影响。本研究的目的是调查 BFR 对年轻男性空手道击拳时手臂肌肉 EMG 活动的急性影响。结果独立 t 检验结果表明，使用 BFR 的右臂和使用 BFR 的左臂（对照组）的肱二头肌和肱三头肌肌动活动及其协同收缩明显高于对照组（肱二头肌和肱三头肌的协同收缩分别为 24.45% 和 27.78%）。结论结果表明，急性手臂 BFR 可增加肘击时手臂肌肉的肌电图活动，直至力竭，这间接表明第二类运动单元被激活。然而，BFR 减少了激动剂-拮抗剂的协同收缩，这可能会增加掷拳时伸肘受伤的风险。

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

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.