健康年轻男性的有氧能力和左心房大小之间的关系:一项观察性研究
Volkan Camkiran1, Ece Yurtseven1, Gamze Aslan1
1Department of Cardiology, Koc University School of Medicine, Istanbul, Turkey.
Medicine
|July 12, 2024
概括
左心房体积指数 (LAVI) 可以表明健康年轻男性的有氧能力. 以峰值氧气吸收 (峰值VO2) 衡量的低有氧健身与更高的LAVI有关,这表明它在评估心血管健康方面的作用.
科学领域:
- 心脏病学 心脏病学
- 运动生理学 运动生理学
- 心声回声扫描 (Echocardiography) 是一种心声回声扫描.
背景情况:
- 氧气容量,以氧气吸收峰值 (VO2峰值) 表示,是心肺呼吸能力的关键指标.
- 众所周知,左心室 (LV) 的静缩和静缩功能与有氧能力有关.
- 左心房 (LA) 结构与有氧健身之间的关系需要进一步研究,特别是在健康的年轻人中.
研究的目的:
- 在健康的年轻男性中,研究左心房体积指数 (LAVI) 和有氧能力 (峰值VO2) 之间的关联.
- 确定LAVI是否可以作为该人群中有氧能力的预测指标.
主要方法:
- 103名健康的年轻男性接受了心声回声测量,以测量LAVI和评估LV功能.
- 进行心肺运动测试以评估有氧能力 (VO2峰值) 和呼吸储备 (BR).
- 使用统计分析,包括相关性和多变量分析,来探索变量之间的关系.
主要成果:
- 与有氧能力较低的人 (VO2峰值<预测的85%) 相比,有氧能力较高的人表现出更高的LAVI.
- 拉维显示与峰值VO2有显著的相关性,并预测了BR.
- 年龄与VO2峰值和预测的BR负相关,LAVI和年龄都是这些有氧能力测量的独立预测因素.
结论:
- 左心房体积指数 (LAVI) 是看似健康的年轻男性有氧能力的重要指标.
- 随着年龄的增加,LAVI可以用来预测这个人群的有氧健身水平.
- 这些发现表明,对LAVI的回声心脏学评估可能为心肺呼吸系统健康提供有价值的见解.
相关概念视频
Exercise and Cardiac Output
978
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...
978
Lung Capacity
50.1K
The air in the lungs is measured in volumes and capacities. Lung volume measures reflect the amount of air taken in, released, or left over after a lung function, like a single inhalation. Lung capacity measures are sums of two or more lung volume measures.
50.1K
Cardiac Output and Stroke Volume
2.9K
Cardiac output (CO) is an integral aspect of human physiology, reflecting the heart's efficiency and responsiveness to the body's needs. It represents the volume of blood that the left or right ventricle ejects into the aorta or pulmonary trunk each minute. The CO is calculated by multiplying the heart rate (HR)—the number of heartbeats per minute—by the stroke volume (SV)—the amount of blood pumped out with each heartbeat.
In an average resting adult male, the typical cardiac...
In an average resting adult male, the typical cardiac...
2.9K
Cardiac Output I:Effect of Heart Rate on Cardiac Output
723
Cardiac Output
Cardiac output (CO) refers to the total amount of blood ejected by one of the ventricles in liters per minute (L/min). In a resting adult, CO ranges from 5 to 6 L/min, adjusting according to the body's metabolic requirements.
Effect of Heart Rate on Cardiac Output
Cardiac output adapts to metabolic demands during stress, physical activity, or illness. The autonomic nervous system regulates heart rate via the sinoatrial node. The parasympathetic nervous system decreases heart...
Cardiac output (CO) refers to the total amount of blood ejected by one of the ventricles in liters per minute (L/min). In a resting adult, CO ranges from 5 to 6 L/min, adjusting according to the body's metabolic requirements.
Effect of Heart Rate on Cardiac Output
Cardiac output adapts to metabolic demands during stress, physical activity, or illness. The autonomic nervous system regulates heart rate via the sinoatrial node. The parasympathetic nervous system decreases heart...
723
Respiratory Volumes and Capacities
1.9K
The respiratory system is responsible for the intake of oxygen and the expulsion of carbon dioxide from the body. Respiratory volumes describe the volume of air in the lungs at different phases of the respiratory cycle. Tidal volume is the air breathed in and out during normal, quiet breathing. Inspiratory reserve volume is the air that can be forcefully inspired beyond the tidal volume. In contrast, expiratory reserve volume refers to the air that can be expelled from the lungs after a normal...
1.9K
Pathophysiology of Cardiac Performance
627
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...
627


