5分钟的时间试验自行车测试是最大氧气摄入量的有效预测吗? 一个外部交叉验证研究
Fernando Klitzke Borszcz1,2, Artur Ferreira Tramontin1, Ricardo Dantas de Lucas2
1Human Performance Research Group, Center for Health and Sport Sciences, Santa Catarina State University, Florianópolis, SC, Brazil.
概括
预测骑自行车者最大氧气吸收 (V ̇O2max) 的拟议方程低估了实际值. 使用贝叶斯方法的更新方程提高了对更广泛的骑自行车人口的预测准确性.
科学领域:
- 运动生理学 运动生理学
- 运动科学 运动科学 运动科学
- 生物统计学 生物统计学
背景情况:
- 准确预测最大氧吸收量 (V ̇O2max) 对于评估骑自行车者的有氧健身至关重要.
- 之前用于V ̇O2max预测的方程需要验证和潜在的更新.
- 从5分钟的计时试验 (RPO5-min) 中将体重正常化的平均功率输出为V ̇O2max的潜在预测器.
研究的目的:
- 通过使用 RPO5-min. 在骑自行车运动中预测 V ̇O2max 的新式方程进行交叉验证.
- 通过纳入贝叶斯信息化先前分布和元分析来更新预测方程.
- 评估男性骑自行车者的预测和实际V ̇O2max之间的一致性.
主要方法:
- 49名男性骑自行车者完成了一次增量分级运动测试,并在静止自行车人体计上进行了5分钟的计时.
- 用贝叶斯的布兰德-阿尔特曼分析来比较实际的V ̇O2max与RPO5-min.的预测.
- 使用贝叶斯信息先验和元分析,更新了V ̇O2max和RPO5-min之间的线性回归.
主要成果:
- RPO5-min方程系统地低估了实际V ̇O2max的-6.6mL·kg-1·min-1.1.
- 95%的一致度限制表明预测准确度的个体差异相当大.
- 将方程与贝叶斯信息先验更新产生了比元分析更好的预测准确性.
结论:
- 使用RPO5-min的V ̇O2max的初始预测方程在研究样本中证明了系统偏差.
- 一个更新的V ̇O2max预测方程,通过使用贝叶斯方法和先前信息来推导,为骑自行车的人提供了更好的概括性.
更多相关视频
08:27A Real-World High-Intensity Interval Training Protocol for Cardiorespiratory Fitness Improvement
Published on: February 22, 2022
3.1K
07:09Assessment of Pulmonary Capillary Blood Volume, Membrane Diffusing Capacity, and Intrapulmonary Arteriovenous Anastomoses During Exercise
Published on: February 20, 2017
13.1K
相关概念视频
01:29Reliability and Validity
12.7K
Reliability and validity are two important considerations that must be made with any type of data collection. Reliability refers to the ability to consistently produce a given result. In the context of psychological research, this would mean that any instruments or tools used to collect data do so in consistent, reproducible ways.
12.7K
01:25Correlation between ECG and Cardiac Cycle
5.1K
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...
5.1K
01:17Exercise and Cardiac Output
1.0K
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...
1.0K