预测心率慢组件动力学:一个跨运动强度,年龄和性别的模型
Massimo Teso1, Alessandro L Colosio2, Maura Loi3
1College of Health and Life Sciences, Hamad Bin Khalifa University, Doha P.O. Box 34110, Qatar.
Sports (Basel, Switzerland)
|February 25, 2025
概括
心率缓慢成分 (scHR) 随着运动强度的增加而增加,在男性中更高. 一个新的方程根据强度,年龄和性别预测scHR,确保随着时间的推移保持一致的训练强度.
科学领域:
- 运动生理学 运动生理学
- 心血管监管 监管心血管系统
- 运动科学 运动科学 运动科学
背景情况:
- 心率缓慢成分 (scHR) 是持续炼期间的强度依赖的心率增加,部分独立于代谢率 (V ̇O2).
- 在运动处方中未能考虑scHR,可能会导致随着时间的推移而降低代谢强度.
- 在持续工作负载的运动期间,在年轻人和老年人中观察到scHR.
研究的目的:
- 在不同强度的运动,性别和年龄组中描述心率减慢成分 (scHR).
- 开发和验证scHR的预测方程,以在有氧运动期间保持一致的代谢刺激.
- 为运动期间动态调整心率目标提供一个工具.
主要方法:
- 66名参与者 (35名女性,平均年龄35±13岁) 进行了露台测试,以确定呼吸门和V ̇O2max.
- 参与者完成了六次9分钟的不同强度的持续炼.
- 从运动的第五分钟开始使用线性拟合计算scHR;在独立样本上开发并验证了多重线性回归方程.
主要成果:
- scHR与运动强度有正相关性,在男性中明显高 (p < 0.05).
- 使用相对运动强度与RCP,年龄和性别开发了一个预测方程 (r2 = 0.54):scHR = -0.0514 + (0.0240 ×相对强度) - (0.0172 ×年龄) - (0.347 ×性别 [男性=0,女性=1]).
- 该方程在独立样本中显示出出色的有效性,具有高相关性 (r2 = 0.98),没有偏差 (-0.01 bpm·min-1),和相当精确 (±4.09 bpm·min-1).
结论:
- 通过考虑相对强度,性别和年龄,可以准确地预测scHR的动态在多样化的人口中.
- 开发的方程可以动态调整心率目标,防止意外减少训练负载.
- 这种方法确保在连续的有氧运动期间保持所需的代谢刺激 (V ̇O2).
相关概念视频
01:30Factors Influencing Heart Rate
2.3K
The heart rate, or pulse rate, is a vital indicator of cardiovascular health. It reflects the number of times the heart beats per minute. Various physiological and environmental factors influence heart rate, increasing or decreasing cardiac output. Understanding these factors is crucial for assessing heart function and identifying potential health issues.
Let us explore the significant factors affecting heart rate, including age, body temperature, posture, acute pain, chemical influences,...
Let us explore the significant factors affecting heart rate, including age, body temperature, posture, acute pain, chemical influences,...
2.3K
01:29Pathophysiology of Cardiac Performance
509
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...
509
01:31Regulation of Heart Rates
1.5K
The regulation of heart rate is a complex process controlled by the autonomic nervous system (ANS), hormonal influences, and intrinsic cardiac mechanisms. The ANS has two main components: the sympathetic nervous system (SNS) and the parasympathetic nervous system (PNS).
The SNS increases heart rate through the release of norepinephrine and epinephrine, which act on beta-1 adrenergic receptors in the heart. This action increases the rate of depolarization in the sinoatrial (SA) node, the heart's...
The SNS increases heart rate through the release of norepinephrine and epinephrine, which act on beta-1 adrenergic receptors in the heart. This action increases the rate of depolarization in the sinoatrial (SA) node, the heart's...
1.5K
01:25Correlation between ECG and Cardiac Cycle
3.2K
The electrical signals recorded on an electrocardiogram (ECG) occur before the mechanical processes of contraction and relaxation during the cardiac cycle.
A cardiac action potential originates in the SA node and spreads throughout the atria and the AV node in approximately 0.03 seconds. This results in the P wave in an ECG and triggers atrial contraction. The action potential is then briefly slowed at the AV node, allowing the atria to contract and fill the ventricles with blood before...
A cardiac action potential originates in the SA node and spreads throughout the atria and the AV node in approximately 0.03 seconds. This results in the P wave in an ECG and triggers atrial contraction. The action potential is then briefly slowed at the AV node, allowing the atria to contract and fill the ventricles with blood before...
3.2K
01:17Exercise and Cardiac Output
868
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...
868
01:20Exercise and Cardiovascular Response
695
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...
695