评估空气流传感器方法:间接热量计中的精度.
Praneel Titheradge1, Robert Robergs2
1School of Allied Health, Exercise & Sports Sciences, Charles Sturt University, Port Macquarie, New South Wales, Australia.
Scandinavian journal of medicine & science in sports
|June 19, 2024
概括
不同的气流传感器会影响运动期间的间接热量计准确度. 运动强度会影响测量,但传感器类型不会显著改变结果,尽管在较高的通风率下,一致性会下降.
科学领域:
- 运动生理学 运动生理学
- 代谢测量 代谢测量
- 生物医学工程 生物医学工程
背景情况:
- 间接热量计对于评估运动期间的能量消耗至关重要.
- 精确测量肺通风对于可靠的间接热量计是必不可少的.
- 存在各种空气流传感器,每个都可能对测量精度产生影响.
研究的目的:
- 评估三种不同的体积气流量测量方法 (轮,气动图谱,Venturi) 对过期气体分析间接热量计 (EGAIC) 的预测准确度和精度的影响.
- 为了确定不同运动强度如何影响这些空气流量测量方法的性能,与EGAIC结合.
- 为了提供对不同代谢车配置的EGAIC可靠性的见解.
主要方法:
- 六名男性和14名女性在静止周期人体运动计上进行了运动测试.
- 肺分钟通风率 (V̇E) 与热身期间的EGAIC计算同时测量,增量坡道测试到疲劳,以及在呼吸门80%的稳定状态炼.
- 评估了三种空气流传感器方法 - - 轮机 (fT),气动图谱 (fP) 和风 (fV) - - 对它们对 VE 测量和 EGAIC 的影响.
主要成果:
- 运动强度显著影响了V̇E测量 (p < 0.0001).
- 特定的空气流传感器方法 (p = 0.97) 和它与运动强度的相互作用 (p = 0.91) 并没有显著影响测量结果.
- 空气流量方法之间的协议在产生V·E的功率输出下降到150 L/min,这表明在更高的通风速率下降了精度.
结论:
- 虽然空气流传感器类型似乎不是在运动强度之间EGAIC错误的主要驱动因素,但在更高的通风水平下,测量的精度会下降.
- 在更高的V̇E下,这种精度降低可能会使生物学变异性,训练反应和测试-重新测试可靠性的解释复杂化.
- 建议仔细考虑空气流传感器性能和不同代谢车系统之间的潜在差异,以准确地解释EGAIC.
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