Suppr超能文献

75 次重复与血流限制运动至力竭对女性肌肉损伤指标的影响。

75-repetition versus sets to failure of blood flow restriction exercise on indices of muscle damage in women.

机构信息

School of Kinesiology and Physical Therapy, University of Central Florida, Orlando, FL, USA.

Florida Space Institute, Orlando, FL, USA.

出版信息

Eur J Sport Sci. 2023 Oct;23(10):1993-2001. doi: 10.1080/17461391.2023.2201813. Epub 2023 May 9.

Abstract

There is conflicting evidence regarding the prevalence and magnitude of exercise-induced muscle damage (EIMD) following low-load resistance exercise with blood flow restriction (LL + BFR) that may be related to exercise protocols. The purpose of this investigation was to examine the effects of 75-repetition (BFR-75) (1 × 30, 3 × 15) and 4 sets to failure (BFR-4x) protocols on indices of EIMD among untrained women. Thirteen women completed this investigation. One leg was randomly assigned to BFR-75 and the other to BFR-4x. Each leg performed isokinetic, unilateral, concentric-eccentric, leg extension muscle actions at 30% of maximal strength. Indices of EIMD (muscle soreness, range of motion [ROM], limb circumference, pain pressure threshold [PPT], and maximal voluntary isometric contraction [MVIC]) were recorded before exercise, 0-, 24-, 48-, 72-, and 96-hours post-exercise. There were no changes for ROM, circumference, or PPT. Muscle soreness increased similarly in both conditions 0-, 24-, and 48-hours post-exercise and MVIC increased 24-, 48-, 72-, and 96-hours post-exercise. These findings suggested BFR-75 and BFR-4x were not associated with EIMD and elicited similar physiological responses. The increases in muscle soreness may be due to metabolic stress associated with LL + BFR protocols apart from EIMD.

摘要

关于低负荷抗阻运动结合血流限制(LL+BFR)后肌肉损伤(EIMD)的流行率和严重程度存在相互矛盾的证据,这可能与运动方案有关。本研究的目的是检验 75 次重复(BFR-75)(1×30,3×15)和 4 组力竭(BFR-4x)方案对未经训练的女性 EIMD 指标的影响。13 名女性完成了此项研究。一条腿被随机分配到 BFR-75 组,另一条腿分配到 BFR-4x 组。每条腿进行等速、单侧、向心-离心、腿部伸展肌肉动作,强度为最大力量的 30%。在运动前、运动后 0 小时、24 小时、48 小时、72 小时和 96 小时记录 EIMD 指标(肌肉酸痛、关节活动度[ROM]、肢体周长、疼痛压力阈值[PPT]和最大自主等长收缩[MVIC])。ROM、周长或 PPT 没有变化。两种条件下的肌肉酸痛在运动后 0 小时、24 小时和 48 小时均相似增加,MVIC 在运动后 24 小时、48 小时、72 小时和 96 小时增加。这些发现表明,BFR-75 和 BFR-4x 与 EIMD 无关,并引起相似的生理反应。肌肉酸痛的增加可能是由于与 LL+BFR 方案相关的代谢应激,而不仅仅是 EIMD。

文献AI研究员

20分钟写一篇综述,助力文献阅读效率提升50倍。

立即体验

用中文搜PubMed

大模型驱动的PubMed中文搜索引擎

马上搜索

文档翻译

学术文献翻译模型,支持多种主流文档格式。

立即体验