心脏再极化指数与训练有素的越野滑雪运动员在最大运动测试期间的氧气消耗有关
Alla K Veselik1, Natalia V Arteyeva2, Nina G Varlamova1
1Department of Ecological and Medical Physiology, Institute of Physiology, Komi Science Center, Ural Branch, Russian Academy of Sciences, Syktyvkar, Russia.
Journal of sports sciences
|July 26, 2024
概括
矢量心电图T波特征与精英滑雪者的运动测试期间的氧气消耗 (VO2) 相相关. 基线T波数据没有预测整体身体表现,但特定组件显示了接近无氧值的关联.
科学领域:
- 运动医学 运动医学
- 心脏病学 心脏病学
- 运动生理学 运动生理学
背景情况:
- 心肺运动测试 (CPET) 对于评估心肺呼吸能力至关重要.
- 矢量心电图 (VECG) 提供了对心脏电活动的先进分析.
- 了解运动期间的T波动力学可以提供有关心脏功能和表现的见解.
研究的目的:
- 调查VECG T波特征与最大CPET期间的氧气消耗 (VO2) 之间的关系.
- 确定VECG T波参数是否可以预测训练有素的越野滑雪运动员的体力表现.
- 分析T波向量变化在不同的运动强度,包括休息,无氧值,峰值负荷和恢复.
主要方法:
- 在自行车上的ERGOSPIROMETER上使用CPET,同时记录VO2和心电图 (ECG) 在30名精英男子越野滑雪运动员身上.
- 使用呼吸交换比率和最大氧气消耗 (VO2max/kg) 估计的无氧值,用于体力表现.
- 使用Kors转换程序计算VECG特征,包括T向量的大小和组件 (Tx,Ty,Tz).
主要成果:
- 在整个CPET中,T-矢量大小 (T-矢量,Tx,Ty) 与VO2/kg显著相关 (p <0.010).
- 基线T-矢量特征与最大体能 (VO2max/kg) 不相关.
- 在厌氧值 (preAnT) 之前的阶段,Tx和T矢量振幅与VO2max/kg显著相关 (p = 0.039和p = 0.023,分别).
结论:
- VECG T波特征在运动期间动态变化,与精英滑雪运动员的氧气消耗水平有关.
- 虽然不能预测峰值性能,但在无氧值附近的特定T波向量组件可以提供有关运动强度和生理反应的见解.
- 在CPET期间的VECG分析可以作为监测运动员心脏功能和训练适应的宝贵工具.
更多相关视频
09:24A Rapidly Incremented Tethered-Swimming Maximal Protocol for Cardiorespiratory Assessment of Swimmers
Published on: January 28, 2020
8.8K
09:04Skeletal Muscle Neurovascular Coupling, Oxidative Capacity, and Microvascular Function with 'One Stop Shop' Near-infrared Spectroscopy
Published on: February 20, 2018
12.5K
相关概念视频
Exercise and Cardiac Output
971
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...
971
Electrocardiogram
2.3K
An electrocardiogram (ECG or EKG) is a critical diagnostic tool that records the electrical signals produced by the heart during each heartbeat. This recording is achieved through electrodes placed strategically on the arms, legs, and chest. The electrocardiograph amplifies these signals and produces 12 distinct tracings, offering a comprehensive understanding of the heart's electrical activity.
Three major waveforms are present in a typical ECG recording: the P wave, the QRS complex, and...
Three major waveforms are present in a typical ECG recording: the P wave, the QRS complex, and...
2.3K
Exercise and Cardiovascular Response
769
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...
769
