增加神经肌肉活动,力输出和阻力运动体积,当使用5分钟相比2分钟的休息间隔之间的集使用5分钟的比较
Gerard McMahon1, Nathan Best1, Timothy Coulter1
1Sport and Exercise Sciences Research Institute, School of Sport, Ulster University, Belfast, Northern Ireland.
Journal of strength and conditioning research
|July 2, 2024
概括
较长的休息间隔,比如5分钟的阻力运动集之间,与较短的2分钟休息相比,增强神经肌肉激活和总炼量. 这表明5分钟的休息可能更有效地促进肌肉生长和增强力量.
科学领域:
- 运动生理学 运动生理学
- 神经肌肉生理学 神经肌肉生理学
- 运动科学 运动科学 运动科学
背景情况:
- 理论上,阻力运动 (RE) 组之间的较长休息间隔可以增强肌肉缩和力量增加.
- 然而,对不同休息间隔的急性神经肌肉反应仍未得到充分研究.
研究的目的:
- 为了研究2分钟 (REST-2) 与5分钟 (REST-5) 休息间隔在抵抗运动期间对神经肌肉反应的急性影响.
- 为了比较不同休息间隔持续时间之间的运动量,力输出和代谢应激.
主要方法:
- 在8个健康的年轻受试者中采用了主体内交叉设计.
- 试验对象完成了4组8次最大同位数收缩,休息间隔为2分钟或5分钟.
- 测量包括峰值扭矩,电肌图 (EMG),血乳酸 (BLa),心率 (HR) 和感知劳动力 (RPE) 的评级.
主要成果:
- 峰值扭矩和平均扭矩在REST-2的后续套件中与REST-5相比,在REST-2的后续套件中明显较低.
- 在REST-2中,从运动前到运动后观察到峰值扭矩和EMG的较大减少.
- 在REST-2 (9,748 N·m) 和REST-5 (11,212 N·m) 中,总体炼量显著下降.
- 随着REST-2的使用,血液中的乳酸盐水平更高,这表明代谢压力更大.
结论:
- 组间的五分钟休息间隔可以增强神经肌肉功能,并增加与2分钟间隔相比的总阻力运动体积.
- 较长的休息时间导致更少的代谢压力,可能更有利于慢性适应,如肌肉缩和力量增加.
更多相关视频
07:53Assessment of Neuromuscular Function Using Percutaneous Electrical Nerve Stimulation
Published on: September 13, 2015
21.9K
10:19Getting to Compliance in Forced Exercise in Rodents: A Critical Standard to Evaluate Exercise Impact in Aging-related Disorders and Disease
Published on: August 22, 2014
14.2K
相关概念视频
Exercise and Muscle Performance
1.4K
Exercise induces a range of adaptations in muscle tissue, depending on the type and duration of activity. Such physical training can be broadly categorized into two types: endurance exercises and resistance exercises.
Endurance exercises
Endurance exercises involve running, swimming, or cycling, which require repetitive movements with low force output. When a person engages in endurance exercise, a few noticeable changes occur in their skeletal muscles. For instance, the number of capillaries...
Endurance exercises
Endurance exercises involve running, swimming, or cycling, which require repetitive movements with low force output. When a person engages in endurance exercise, a few noticeable changes occur in their skeletal muscles. For instance, the number of capillaries...
1.4K
Muscle Stimulation Frequency
2.1K
The contraction strength of muscles is regulated by motor neurons, which modulate the frequency of action potentials dispatched to the motor units based on the body's requirements. This process of varying the muscle stimulation frequency allows muscles to contract with a force that is precisely tailored to the needs of the moment, whether lifting a feather or a heavy box.
Wave summation
At low firing rates, motor neurons induce individual twitch contractions in muscle fibers. These twitches...
Wave summation
At low firing rates, motor neurons induce individual twitch contractions in muscle fibers. These twitches...
2.1K
Exercise and Cardiovascular Response
777
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...
777
Exercise and Cardiac Output
978
Regular physical activity is essential for maintaining cardiovascular health, with aerobic exercises being particularly effective. According to the American Heart Association, 150 minutes of moderate to intense aerobic exercise per week is recommended for a healthy heart. Aerobic activities may include brisk walking, running, bicycling, cross-country skiing, and swimming, ideally performed three to five times per week.
Sustained exercise increases the muscles' oxygen demand, which can be...
Sustained exercise increases the muscles' oxygen demand, which can be...
978
Muscle Recovery and Fatigue
2.0K
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...
2.0K
Motor Unit Stimulation
1.5K
When the neuron of a motor unit fires an action potential, it triggers a series of events, leading to a twitch contraction in the muscle fibers. The process of excitation-contraction coupling is crucial in relaying the action potential to the muscle fibers.
The latent period of contraction marks the onset of excitation-contraction coupling, when the action potential propagates across the sarcolemma, preparing the muscle fibers for contraction. As the fibers enter the contraction phase, the...
The latent period of contraction marks the onset of excitation-contraction coupling, when the action potential propagates across the sarcolemma, preparing the muscle fibers for contraction. As the fibers enter the contraction phase, the...
1.5K
