诺莫巴里克缺氧对骑自行车运动者急性运动诱导的血基-1-酸盐代谢变化的影响
Katarzyna Hodun1, Miłosz Czuba2, Kamila Płoszczyca3
1Department of Physiology, Medical University of Białystok, Białystok, Poland.
Biology of sport
|March 25, 2024
概括
运动会根据强度和氧气可用性不同地影响氨酸-1-酸盐 (S1P) 的代谢. 缺氧会降低运动后的S1P水平,而次最大运动会增加二氨酸-1-酸盐 (dhS1P).
科学领域:
- 运动生理学 运动生理学
- 代谢学 代谢学 代谢学
- 心血管科学 心血管科学
背景情况:
- 细胞外斯芬戈-1-酸盐 (S1P) 是肌肉功能的关键调节剂.
- 血S1P水平随着剧烈的运动和训练而增加.
- 经常在训练中使用的缺氧也会提高S1P.
研究的目的:
- 为了研究normobaric缺氧对运动诱导的血液脂代谢变化的影响.
- 为了比较分级运动 (GE) 和计时试验 (TT) 在正常和缺氧条件下对S1P和二氨酸-1-酸盐 (dhS1P) 的影响.
主要方法:
- 15名男性骑自行车者在正常或低氧 (FiO2 = 16.5%) 环境中完成了GE和TT协议.
- 血液样本是在运动前,运动后立即和恢复后30分钟收集的.
- 分析了血和血细胞脂度和红细胞dhS1P释放率.
主要成果:
- 时间试验运动增加了血和血液细胞dhS1P,以及红细胞dhS1P的释放,无论氧气条件如何.
- 低氧增加了恢复期间血S1P的减少.
- 在诺尔莫克西亚中逐级运动有选择地增加了HDL结合的S1P,这种效应在缺氧中减弱,并与血小板和红细胞S1P的减少有关.
结论:
- 亚最大运动 (TT) 通过血液细胞的增强合成和释放来提高血dhS1P.
- 最大运动 (GE) 通过独立于血细胞的机制增加HDL结合的S1P.
- 低氧减弱了运动后的S1P度.
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
832
09:04Skeletal Muscle Neurovascular Coupling, Oxidative Capacity, and Microvascular Function with 'One Stop Shop' Near-infrared Spectroscopy
Published on: February 20, 2018
12.6K
相关概念视频
Oxygen Transport in the Blood
2.7K
Hemoglobin (Hb) is a crucial molecule in the human body, consisting of four polypeptide chains, each bound to an iron-containing heme group. This unique structure enables hemoglobin to bind to oxygen, with each molecule capable of combining with four molecules of oxygen, leading to rapid and reversible oxygen loading. When fully loaded with oxygen, it is called oxyhemoglobin, while hemoglobin that has released oxygen is called reduced hemoglobin or deoxyhemoglobin. As hemoglobin binds oxygen,...
2.7K
Hyperpnea and Hyperventilation
1.1K
Hyperventilation refers to a higher-than-normal rate and depth of breathing, often associated with anxiety attacks. This excessive breathing surpasses the body's need to expel CO2, leading to a condition known as hypocapnia - an unusually low level of carbon dioxide in the blood. Hypocapnia can constrict cerebral blood vessels, reducing blood flow to the brain, which may result in dizziness or fainting. Early signs include tingling and muscle spasms in the hands and face, caused by falling...
1.1K
Hypoxia
1.0K
Hypoxia is a medical condition characterized by an inadequate oxygen supply to body tissues. It typically manifests as a bluish discoloration of the skin and mucosae, especially in fair-skinned individuals, when hemoglobin (Hb) saturation drops below 75%.
Types of Hypoxia
There are four primary types of hypoxia, each resulting from a different cause:
1. Anemic hypoxia: This type occurs due to insufficient oxygen delivery caused by a lack of red blood cells (RBCs) or RBCs with abnormal or...
Types of Hypoxia
There are four primary types of hypoxia, each resulting from a different cause:
1. Anemic hypoxia: This type occurs due to insufficient oxygen delivery caused by a lack of red blood cells (RBCs) or RBCs with abnormal or...
1.0K
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
Respiration and Gaseous Exchange
1.5K
The intricate interplay between the cardiovascular and respiratory systems is crucial for efficiently transporting respiratory gases throughout the body. Let us explore the cardiovascular system's multifaceted functions, emphasizing its pivotal role in gas exchange.
Respiration involves the exchange of gases, especially oxygen (O2) and carbon dioxide (CO2), between the alveoli and body cells, a process facilitated by blood circulation. As a result, the cardiovascular system, which involves...
Respiration involves the exchange of gases, especially oxygen (O2) and carbon dioxide (CO2), between the alveoli and body cells, a process facilitated by blood circulation. As a result, the cardiovascular system, which involves...
1.5K
Factors Affecting Respiration
5.0K
Respiration is a crucial physiological function involving exchanging oxygen (O2) and carbon dioxide (CO2) between an organism and its environment. Various factors can impact this essential process:
5.0K
