在抵抗运动期间添加血流限制并不会增加长时间的低频力压力
Christopher Pignanelli1, Alexa A Robertson1, Steven M Hirsch2
1Department of Human Health & Nutritional Sciences, University of Guelph, Guelph, Ontario, Canada.
Experimental physiology
|April 2, 2024
概括
运动期间的血流限制 (BFR) 不会加剧长期低频力抑郁 (PLFFD) 或缓慢神经肌肉恢复. 身体活跃的个体经历类似的恢复时间与或没有BFR.
科学领域:
- 运动生理学 运动生理学
- 神经肌肉功能 神经肌肉功能
- 运动科学 运动科学 运动科学
背景情况:
- 血流限制 (BFR) 运动减少了训练量,但其对运动后神经肌肉恢复的影响,特别是长期低频力压抑 (PLFFD),尚不清楚.
- 已知现象是PLFFD,其特点在于在艰苦的运动后,在低刺激频率相比,在高刺激频率下,力量损失较大.
- 调查BFR对PLFFD和恢复的影响对于优化培训协议至关重要.
研究的目的:
- 为了确定抵抗运动期间的BFR是否与传统运动相比增加了PLFFD.
- 评估BFR是否会影响运动后神经肌肉功能恢复的时间.
- 为了比较连续 (BFR_CONT) 和间歇 (BFR_INT) BFR应用与对任务失败 (RE_TF) 和匹配体积 (RE_VM) 的阻力练习.
主要方法:
- 15名身体活跃的参与者在四个条件下完成了膝盖延伸炼:RE_TF,BFR_CONT,BFR_INT和RE_VM.
- 神经肌肉功能通过最大自愿收缩 (MVC),自愿激活和力频率曲线 (1-100 Hz) 来评估.
- 运动前和运动后的0,1,2,3,4,24小时进行了测量.
主要成果:
- 所有的运动条件都在运动后0小时引起了类似的MVC力和自愿激活的初始减少.
- 在所有组中,MVC和自愿激活恢复到基线值发生在4至24小时之间.
- 在1小时后的RE_TF,BFR_INT和RE_VM后观察到PLFFD,但在BFR_CONT后没有显著,表明BFR没有加剧这种情况.
结论:
- 阻力运动期间的血流限制 (BFR) 在身体活跃的个体中,在运动后长达24小时内不会影响神经肌肉功能的恢复.
- 与传统的炼方案相比,BFR似乎不会增加长期低频力压力 (PLFFD) 的严重程度或持续时间.
- 这些发现表明,BFR可以安全地纳入训练方案,而不会影响神经肌肉的恢复.
相关概念视频
Exercise and Cardiovascular Response
802
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...
802
Imbalances in Cardiac Output
1.4K
The heart's primary function is to pump blood throughout the body, maintaining a balance between blood sent out (cardiac output) and blood returning (venous return). If this balance is disrupted, it can result in congestive heart failure (CHF), a severe condition where the heart becomes an inefficient pump, leading to inadequate blood circulation.
CHF can occur due to the failure of either side of the heart. Left-side failure leads to pulmonary congestion—the right side continues to send...
CHF can occur due to the failure of either side of the heart. Left-side failure leads to pulmonary congestion—the right side continues to send...
1.4K
Muscle Recovery and Fatigue
2.1K
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...
2.1K
Blood Flow
69.7K
Blood is pumped by the heart into the aorta, the largest artery in the body, and then into increasingly smaller arteries, arterioles, and capillaries. The velocity of blood flow decreases with increased cross-sectional blood vessel area. As blood returns to the heart through venules and veins, its velocity increases. The movement of blood is encouraged by smooth muscle in the vessel walls, the movement of skeletal muscle surrounding the vessels, and one-way valves that prevent backflow.
69.7K
Pathophysiology of Cardiac Performance
645
Typical heart performance is influenced by heart rate, rhythm, myocardial contraction, and metabolism or blood flow. The cardiac muscle exhibits distinct electrophysiological features, including pacemaker activity and calcium channel control, which play a vital role in the heart's response to various drugs. The autonomic nervous system, comprising the sympathetic and parasympathetic branches, regulates heart rate. Sympathetic activation increases heart rate, while parasympathetic activation...
645
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


