在不同低负荷血流限制协议中,女性的肌肉疲劳反应可比较
Mason A Howard1, Paola M Rivera2, Sean M Lubiak1
1School of Kinesiology and Rehabilitation Sciences, Division of Kinesiology, University of Central Florida, 12494 University Boulevard, Orlando, FL, 32816, USA.
European journal of applied physiology
|July 1, 2025
概括
低负荷血流受限 (LLBFR) 运动会导致肌肉疲劳. 用LLBFR的单个设置到故障可能与诱导疲劳的多个设置一样有效.
科学领域:
- 运动生理学 运动生理学
- 运动科学 运动科学 运动科学
- 肌肉生理学 肌肉生理学
背景情况:
- 众所周知,低负荷血流受限 (LLBFR) 阻力运动会引起急性肌肉疲劳.
- 具体的协议,包括集和重复方案,可能会影响经历的疲劳程度.
研究的目的:
- 为了研究和比较肌肉疲劳特征,遵循三个不同的LLBFR阻力练习协议.
- 为了检查75次重复的协议,三组到失败的协议和一组到失败的协议的影响.
主要方法:
- 16名女性参与了这项研究,她们进行了单边腿部伸展炼.
- 使用了三种不同的LLBFR协议:75重复,3组到失败 (3x) 和1组到失败 (1x) 在最大自愿同度收缩 (MVIC) 的30%时.
- 测量包括MVIC,峰值抽扭矩 (PTT),表面电肌图谱振幅 (sEMG AMP),自愿激活 (VA) 和Vwave/Mwave比率,评估在运动前和运动后.
主要成果:
- 不同的LLBFR协议和疲劳特征之间没有发现显著的相互作用.
- 在所有协议中,观察到MVIC扭矩,PTT,sEMG AMP和VA的显著下降.
- 在Vwave/Mwave比率上没有发现显著的变化,这表明神经功能得到保护.
结论:
- 所有三个LLBFR协议都导致肌肉力量产生和自愿激活的可比降低.
- 一个单一的LLBFR阻力练习对自愿失败进行,可以引起类似的疲劳反应多组协议.
- 这些发现表明,LLBFR运动是诱导肌肉疲劳的有效方法,具有节省时间的训练方案的潜力.
相关概念视频
01:24Muscle Recovery and Fatigue
2.5K
Muscle fatigue refers to the decline in a muscle's ability to maintain the force of contraction after prolonged activity. It primarily stems from changes within muscle fibers. Even before experiencing muscle fatigue, one may feel tired and have the urge to stop the activity. This response, known as central fatigue, occurs due to changes in the central nervous system, namely the brain and spinal cord. While there is no single mechanism that induces fatigue, it may serve as a protective...
2.5K
01:26Exercise Stress Test
513
Introduction
Exercise stress testing, commonly known as a treadmill test, is a noninvasive procedure used to evaluate cardiovascular function and diagnose heart conditions.
Definition
An exercise stress test measures the heart's response to exertion using a treadmill or stationary bicycle. Chest electrodes record the heart's electrical activity through an ECG, and blood pressure is monitored regularly.
Purposes
Exercise stress testing, commonly known as a treadmill test, is a noninvasive procedure used to evaluate cardiovascular function and diagnose heart conditions.
Definition
An exercise stress test measures the heart's response to exertion using a treadmill or stationary bicycle. Chest electrodes record the heart's electrical activity through an ECG, and blood pressure is monitored regularly.
Purposes
513
01:20Exercise and Cardiovascular Response
1.1K
Exercise significantly impacts cardiovascular response, which is crucial for understanding patient health and designing effective treatment plans.
Light to moderate physical activity initiates a series of interconnected responses in the body. The heart rate modestly increases in anticipation of the workout, followed by widespread vasodilation as oxygen consumption by skeletal muscles increases. This results in decreased peripheral resistance, increased capillary blood flow, and accelerated...
Light to moderate physical activity initiates a series of interconnected responses in the body. The heart rate modestly increases in anticipation of the workout, followed by widespread vasodilation as oxygen consumption by skeletal muscles increases. This results in decreased peripheral resistance, increased capillary blood flow, and accelerated...
1.1K