神经血管合和脑血管血液动力学受到运动训练状态的改变,这些状态发生在青春期成熟的不同阶段
Jack S Talbot1,2, Dean R Perkins3, Tony G Dawkins4
1Cardiff School of Sport and Health Sciences, Cardiff Metropolitan University, Cardiff, United Kingdom.
概括
儿童运动训练通过改善大脑血流调节来增强神经血管合 (NVC). 这些适应在青春期早期最有效,强调童年是脑血管健康的关键窗口.
科学领域:
- 脑血管生理学 脑血管生理学
- 青少年发展 青少年发展
- 运动科学 运动科学
背景情况:
- 神经血管合 (NVC) 涉及氧化信号,受性激素和运动的影响.
- 在不同青春期阶段,运动训练对NVC的影响尚不清楚.
- 研究运动在整个成熟期对NVC的作用对于了解脑血管健康至关重要.
研究的目的:
- 检查运动训练如何影响青春期前后青少年的休息大脑血液动力学和NVC.
- 为了确定NVC中运动介导的适应是否因成熟阶段和性别而有所不同.
主要方法:
- 间多普勒超声波测量了后脑和中脑动脉的速度和脉动率指数.
- 在休息状态和视觉NVC刺激期间对121名训练有素和未训练有素的参与者进行测量.
- 参与者被分为前或后高峰高度速度 (PHV) 和性别.
主要成果:
- 运动训练的年轻人表现出更高的休息中脑动脉速度.
- 脑血流速度 (ΔPCAv, ΔMCAv) 的NVC诱导的变化不受成熟度或训练状态的影响.
- 青春期前未受过训练的青少年在NVC期间,与青春期后未受过训练和受过训练的同行相比,后脑动脉脉动率指数 (ΔPCAPI) 的增加更大.
结论:
- 运动训练在年轻人中增加了静止大脑血液的速度.
- 在NVC中培训诱导的适应在青春期早期最有效.
- 儿童时期为脑血管血液动力学中运动介导的有益适应提供了一个独特的机会.
更多相关视频
09:04Skeletal Muscle Neurovascular Coupling, Oxidative Capacity, and Microvascular Function with 'One Stop Shop' Near-infrared Spectroscopy
Published on: February 20, 2018
12.6K
08:12Calculating Heart Rate Variability from ECG Data from Youth with Cerebral Palsy During Active Video Game Sessions
Published on: June 5, 2019
19.9K
相关概念视频
01:20Exercise and Cardiovascular Response
866
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...
866
01:27Regulation of Stroke Volume
3.3K
The regulation of stroke volume, which is the amount of blood the heart pumps out during each heartbeat, is critical for maintaining a healthy circulatory system. Stroke volume is influenced by three main factors: preload, contractility, and afterload.
Preload refers to the degree of stretch on the heart before it contracts. It's analogous to the stretching of a rubber band; the more it's stretched, the more forcefully it snaps back. This concept is encapsulated in the Frank-Starling law of the...
Preload refers to the degree of stretch on the heart before it contracts. It's analogous to the stretching of a rubber band; the more it's stretched, the more forcefully it snaps back. This concept is encapsulated in the Frank-Starling law of the...
3.3K
01:18Neural Regulation of Blood Pressure
2.9K
The neural regulation of blood pressure involves intricate interactions between the autonomic nervous system (ANS) and cardiovascular system, ensuring adequate perfusion of tissues. This regulation primarily occurs through baroreceptor and chemoreceptor reflexes, involving both short-term and long-term mechanisms.
Baroreceptor Reflex
Baroreceptors, located in the carotid sinuses and aortic arch, detect changes in blood pressure. When blood pressure rises, these stretch-sensitive receptors...
Baroreceptor Reflex
Baroreceptors, located in the carotid sinuses and aortic arch, detect changes in blood pressure. When blood pressure rises, these stretch-sensitive receptors...
2.9K
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
01:17Autoregulation of Blood Flow
2.4K
Autoregulation mechanisms are characterized by their inherent capacity for self-regulation without necessitating specific nervous stimulation or endocrine control. These mechanisms facilitate the adjustment of blood flow and, therefore, perfusion specific to each tissue region. This self-regulation encompasses chemical signals and myogenic controls.
Chemical Signaling in Autoregulation
Chemical signaling operates at the precapillary sphincter level, inciting either contraction or relaxation....
Chemical Signaling in Autoregulation
Chemical signaling operates at the precapillary sphincter level, inciting either contraction or relaxation....
2.4K
01:27Regulation of the Cardiovascular System
1.2K
The regulation of the cardiovascular system allows the body to adapt to various demands and maintain homeostasis.
The regulation of the cardiovascular system involves the autonomic nervous system (ANS), baroreceptors, and chemoreceptors, ensuring that heart rate and blood pressure are appropriately modulated in response to varying physiological demands.
The ANS comprises two main divisions: the sympathetic and parasympathetic nervous systems. The sympathetic nervous system enhances...
The regulation of the cardiovascular system involves the autonomic nervous system (ANS), baroreceptors, and chemoreceptors, ensuring that heart rate and blood pressure are appropriately modulated in response to varying physiological demands.
The ANS comprises two main divisions: the sympathetic and parasympathetic nervous systems. The sympathetic nervous system enhances...
1.2K