COSMED® Q-NRG max 便携式代谢系统的准确性和可重复性。
Accuracy and repeatability of the COSMED® Q-NRG max mobile metabolic system.
作者信息
Falcioni Lavinia, Guidetti Laura, Baldari Carlo, Posada Andrey Sanko, Wing Chris, Dover Luke, Meucci Marco
机构信息
Department of Public Health and Exercise Science, Appalachian State University, Boone, North Carolina, United States of America.
Department of Humanities, Movement, and Education Sciences, University "Niccolò Cusano", Rome, Italy.
出版信息
PLoS One. 2025 Mar 20;20(3):e0319394. doi: 10.1371/journal.pone.0319394. eCollection 2025.
PURPOSE
To investigate the accuracy and repeatability of the Q-NRG Max® metabolic system against a VacuMed metabolic simulator using a wide range of metabolic rates.
METHODS
Sixteen metabolic rates (oxygen consumption 0.9-6 L/min), with different combinations of minute ventilation, oxygen consumption, and carbon dioxide production, were measured for 5 minutes, two times by a single Q-NRG Max® unit over the course of one week. Recordings were performed early in the morning, by the same trained technician, in a ventilated laboratory under the same atmospheric conditions. Accuracy was assessed by ordinary least products (OLP) regression analysis, Bland-Altman plots, intraclass correlation coefficients (ICC), mean percentage differences, technical errors (TE) and minimum detectable change (MDC) for all three variables. This analysis was performed using 10 metabolic rates (oxygen consumption 0.9-4 L/min) and 16 metabolic rates (oxygen consumption 0.9-6 L/min) to allow comparisons with previous research. Intra-device repeatability was performed by absolute percentage differences between measurements (MAPE), ICC, TE, and MDC for the same variables. Repeatability was investigated using 16 metabolic rates.
RESULTS
High agreement and excellent ICCs (>0.998) were observed for all variables when considering both 10 and 16 metabolic rates. The mean percentage difference, TE and MDC were 0.87%-1.01%, 0.67%-1.07%, 1.55%-2.49%, respectively for the first 10 metabolic rates, and -0.39%-0.65%, 0.58%-1.63%, 1.35%-3.81%, respectively for the 16 metabolic rates. The intra-device repeatability results showed an excellent ICCs (=1.000), MAPE < 0.5%, TE < 1%, and MDC ≤ 2%.
CONCLUSION
The Q-NRG Max® is a valid and reliable mobile metabolic system for the measurement of ventilation, oxygen consumption, and carbon dioxide production. Measurements were below the 5% TE and MDC, and 2% MAPE recommended thresholds across a wide range of metabolic rates up to 6 L/min oxygen consumption.
目的
使用多种代谢率，针对VacuMed代谢模拟器研究Q-NRG Max®代谢系统的准确性和可重复性。
方法
通过单个Q-NRG Max®装置在一周内分两次测量16种代谢率（耗氧量0.9 - 6升/分钟），这些代谢率具有不同的分钟通气量、耗氧量和二氧化碳产生量组合。由同一位经过培训的技术人员在清晨、通风良好的实验室且相同大气条件下进行5分钟的记录。通过普通最小乘积（OLP）回归分析、Bland-Altman图、组内相关系数（ICC）、平均百分比差异、技术误差（TE）和所有三个变量的最小可检测变化（MDC）来评估准确性。使用10种代谢率（耗氧量0.9 - 4升/分钟）和16种代谢率（耗氧量0.9 - 6升/分钟）进行此分析，以便与先前的研究进行比较。通过测量值之间的绝对百分比差异（MAPE）、ICC、TE和相同变量的MDC来进行设备内可重复性分析。使用16种代谢率研究可重复性。
结果
在考虑10种和16种代谢率时，所有变量均观察到高度一致性和出色的ICC（>0.998）。前10种代谢率的平均百分比差异、TE和MDC分别为0.87% - 1.01%、0.67% - 1.07%、1.55% - 2.49%，16种代谢率的分别为 - 0.39% - 0.65%、0.58% - 1.63%、1.35% - 3.81%。设备内可重复性结果显示出色的ICC（=1.000）、MAPE < 0.5%、TE < 1%且MDC≤2%。
结论
Q-NRG Max®是一种用于测量通气、耗氧量和二氧化碳产生量的有效且可靠的移动代谢系统。在高达6升/分钟耗氧量的广泛代谢率范围内，测量值低于推荐的5% TE和MDC以及2% MAPE阈值。
Zotero 插件