坡道斜率对强度值的影响,基于骑自行车期间心率变化的相关性
Pablo R Fleitas-Paniagua1, Rafael de Almeida Azevedo2, Mackenzie Trpcic1
1Faculty of Kinesiology, University of Calgary, Calgary, Canada.
Physiological reports
|August 7, 2023
概括
自行车坡道的斜率不会影响心率变化值 (HRVT1和HRVT2),这是运动强度的关键标记. 这一发现表明,受影响波动分析 (DFA a1) 可靠地识别这些值,无论使用的坡道增量斜率如何.
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:
- 心率变化 (HRV) 分析,特别是阻断波动分析 (DFA a1),越来越多地用于确定运动强度值.
- 了解不同测试方案中这些值的可靠性对于准确的生理评估至关重要.
研究的目的:
- 调查不同坡道增量 (RI) 斜率对心率变化值 (HRVT1和HRVT2) 的影响.
- 为了评估HRVT1和HRVT2的可靠性和一致性,使用不同的RI斜率确定了HRVT1和HRVT2.
主要方法:
- 17名参与者接受了三次RI测试,斜率为15,30和45W·min-1,同时监测气体交换,心率和HRV.
- HRVT1被定义为DFA a1达到0.75的点,HRVT2为DFA a1达到0.5.的点.
- 统计分析包括皮尔森的r,布兰德-阿尔特曼分析,ICC3,1,ANOVA,并配对t测试来比较跨的HRVTs.
主要成果:
- 在所有测试的RI斜坡上,观察到HRVT1和HRVT2的出色可靠性 (ICC3,1值在0.88到0.93之间).
- 在HRVT1/2之间发现了高相关性 (r = 0.840.95),对于HR和V̇O2.2,HR和V̇O2.2,HR和V̇O2.2,HR和V̇O2.5,HR和V̇O2.5,HR和V̇O2.
- 布兰德-阿尔特曼分析显示差异很小,并配对的t测试表明HRVTs之间没有显著的平均差异,这些差异来自各种坡道斜坡.
结论:
- 结果表明,自行车坡道的斜率不会显著影响HRVT1或HRVT2.2的识别.
- DFA a1衍生HRVTs是可靠和一致的,无论选择的坡道增量斜率如何,支持其作为强大的运动强度边界标记器的使用.
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