通过体育学科的峰值氧气吸收指数对左心室大小的生理评估
Jana Schellenberg1, Lynn Matits1,2, Johannes Kersten1
1Sports and Rehabilitation Medicine, University Hospital Ulm, Leimgrubenweg 14, Ulm 89075, Germany.
将左心室 (LV) 大小索引到氧气吸收峰值 (VO2峰值) 将运动员群体之间的差异正常化. 这种方法还可以更好地区分运动员和扩张性心肌病患者,而不是身体表面积 (BSA) 索引.
科学领域:
- 心脏病学 心脏病学
- 运动医学 运动医学
- 身体生理学 身体生理学
背景情况:
- 左心室 (LV) 扩大是运动员,特别是耐力运动员的常见适应.
- 索引LV体积和质量到氧气吸收峰值 (VO2峰值) 可能比传统的身体表面积 (BSA) 索引更好地反映生理适应.
研究的目的:
- 调查是否将LV终端-透析体积 (LVEDV) 和质量索引到VO2峰值可以消除LV体积的体育特异性差异.
- 评估VO2峰值索引是否改善了运动员与扩张性心肌病 (DCM) 等病理状况之间的差异化.
主要方法:
- 分析了85名运动员的心声和心肺运动测试数据 (70名来自COSMO-S,15名精英耐力运动员).
- 回归分析比较了由VO2峰值解释的LVEDV和LV质量的变异与BSA.
- 使用两种索引方法,比较体育类别 (耐力,混合,动力,技术) 的LV大小差异.
- 对DCM患者队列 (n=12) 的评估,以区分运动员与病理.
主要成果:
- VO2峰值解释了LVEDV比BSA显著更多的差异 (R2 0.64对比0.19,P <0.001).
- 当按BSA进行索引时,体育运动之间存在LVEDV和LV质量的显著差异 (P ≤0.019).
- 当LVEDV和LV质量被索引到VO2峰值 (P ≥0.40) 时,这些运动特异性差异消失了.
- 对VO2峰值的索引比对BSA的索引更好地区分了DCM患者与运动员的差异.
结论:
- 将LV大小索引到VO2峰提供了对运动员心脏适应的更生理解释.
- 这种方法通过考虑训练适应来减少体育特定差异.
- 建议在更大的队列中进一步验证,并测试微妙的病理检测.
更多相关视频
09:24A Rapidly Incremented Tethered-Swimming Maximal Protocol for Cardiorespiratory Assessment of Swimmers
Published on: January 28, 2020
07:09Assessment of Pulmonary Capillary Blood Volume, Membrane Diffusing Capacity, and Intrapulmonary Arteriovenous Anastomoses During Exercise
Published on: February 20, 2017
相关概念视频
Exercise and Cardiac Output
Sustained exercise increases the muscles' oxygen demand, which can be...
Cardiac Output and Stroke Volume
In an average resting adult male, the typical cardiac...
Lung Capacity
Assessment of the Cardiovascular System IV: Auscultation
Normal Heart Sounds
S1 (First Heart Sound)-
S1 is made by the closure of the mitral and tricuspid valves (atrioventricular valves), marking the beginning of systole.
S2 (Second Heart Sound)-
S2 is made by the closure of the aortic and pulmonic valves (semilunar valves), marking the end of the systole.
Assessment of the Cardiovascular System III: Palpation
Jugular Venous Pressure (JVP) Measurement
Position the patient at a thirty- to forty-five-degree angle or in a semi-fowler's position. Look for the highest point of pulsation in the internal jugular vein and measure the vertical distance to the angle of Loius or sternal angle. A normal JVP is 3-4 cm above...
Pulse
Pulse Rate and its Significance
Pulse rate, often measured in beats per minute (bpm), reflects the heart rate (HR), which is influenced by numerous factors such as stress, physical activity, and hormonal changes. A normal resting adult pulse rate falls...
