便携式代谢测量系统的可靠性和有效性

Reliability and validity of a portable metabolic measurement system.

作者信息

Melanson E L, Freedson P S, Hendelman D, Debold E

机构信息

Department of Exercise Science, University of Massachusetts, Amherst 01003, USA.

出版信息

Can J Appl Physiol. 1996 Apr;21(2):109-19. doi: 10.1139/h96-010.

DOI:10.1139/h96-010

PMID:8727474

Abstract

The purpose of this study was to assess the reliability and validity of a portable metabolic system (TEEM 100) during submaximal and maximal (VO2max) exercise using a computer-based metabolic system as the reference system (REF). Between repeated trials of submaximal exercise at three constant loads, differences in ventilation (Ve) and oxygen consumption (VO2) were 0.2 +/- 4.9 L . min-1 and 0.03 +/- 0.10 L . min-1 for REF, and 1.9 +/- 0.7 L . min-1 and 0.00 +/- 0.17 L . min-1 for TEEM 100. Pooled intraclass reliability coefficients for Ve and VO2 calculated from the repeated submaximal trials were r = .89 and r = .94 for REF, and r = .86 and r = .94 for the TEEM 100. Respiratory exchange ratio (RER) measured by the TEEM 100 was significantly higher (p = .01) at only the lowest workload. At VO2max, the TEEM 100 recorded significantly higher values for FeO2 (p = .01) and RER (p < .001). These results suggest that the TEEM 100 provides reliable and valid measurements of VO2 during submaximal and maximal exercise.

摘要

本研究的目的是使用基于计算机的代谢系统作为参考系统（REF），评估便携式代谢系统（TEEM 100）在次最大强度和最大强度（VO₂max）运动期间的可靠性和有效性。在三个恒定负荷下的次最大强度运动的重复试验之间，REF的通气量（Ve）和耗氧量（VO₂）差异分别为0.2±4.9L·min⁻¹和0.03±0.10L·min⁻¹，TEEM 100的分别为1.9±0.7L·min⁻¹和0.00±0.17L·min⁻¹。从重复的次最大强度试验计算得出的Ve和VO₂的合并组内可靠性系数，REF的r = 0.89和r = 0.94，TEEM 100的r = 0.86和r = 0.94。仅在最低工作量时，TEEM 100测量的呼吸交换率（RER）显著更高（p = 0.01）。在VO₂max时, TEEM 100记录的FeO₂（p = 0.01）和RER（p < 0.０01）值显著更高。这些结果表明，TEEM 100在次最大强度和最大强度运动期间能提供可靠且有效的VO₂测量值。