间歇性血流阻塞在骑自行车期间调节神经肌肉,感知和心肺呼吸的运动耐受性决定因素
Zachary John McClean1, Jenny Zhang1, Neda Khaledi1,2
1Faculty of Kinesiology, University of Calgary, 2500 University Dr NW, Calgary, AB, T2N 1N4, Canada.
European journal of applied physiology
|June 6, 2023
概括
骑自行车期间间歇性血流封闭 (BFO) 会降低运动耐受性,较长的封闭期会导致更大的肌肉疲劳和性能降低. 这突显了闭塞持续时间对神经肌肉反应的影响.
科学领域:
- 运动生理学 运动生理学
- 肌肉生理学 肌肉生理学
- 运动科学 运动科学 运动科学
背景情况:
- 运动期间血流封闭 (BFO) 可以损害肌肉功能和运动耐受性.
- 与不变的BFO不同,间歇性BFO对神经肌肉,感知和心肺呼吸反应的影响仍未得到充分研究.
研究的目的:
- 为了比较较短 (5秒封闭:15秒释放) 和较长 (10秒封闭:30秒释放) 间歇性BFO协议对骑自行车运动耐受性的影响.
- 在不同的BFO条件下,调查骑自行车时与任务失败有关的神经肌肉,感知和心肺呼吸反应.
主要方法:
- 14名参与者在三个随机条件下完成了循环到任务失败的循环:更短的间歇性BFO,更长的间歇性BFO和没有BFO (控制).
- 神经肌肉功能通过最大自愿同度膝关节收缩 (MVC) 和股骨神经刺激来评估.
- 感知指标 (如呼吸不全,疲劳) 和心肺呼吸数据被连续记录.
主要成果:
- 与控制相比,与间歇性BFO协议相比,循环到任务失败的时间更短.
- 与较短的BFO (5:15s) 和控制相比,更长的间歇性BFO (10:30s) 导致肌肉抽力下降更大,低频疲劳更大.
- 与BFO条件相比,在任务失败1的控制条件下,呼吸障碍和疲劳的感知度更高.
结论:
- 在间歇性BFO期间的运动耐受性受到阻塞持续时间的显著影响.
- 减少肌肉收缩性和增加对努力和疼痛的感知是限制BFO运动表现的关键因素.
- 与较长的协议相比,更短的间歇性BFO协议可能会减轻对肌肉功能的一些负面影响.
更多相关视频
09:33Using Near-Infrared Spectroscopy Wearable Devices to Identify Central Versus Peripheral Limitations During Exercise
Published on: December 19, 2024
907
04:20Integration of Brain Tissue Saturation Monitoring in Cardiopulmonary Exercise Testing in Patients with Heart Failure
Published on: October 1, 2019
5.8K
相关概念视频
01:20Exercise and Cardiovascular Response
874
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...
874
01:29Pathophysiology of Cardiac Performance
713
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...
713
01:17Exercise and Cardiac Output
1.1K
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...
1.1K