Accuracy and repeatability of the COSMED® Q-NRG max mobile metabolic system.

ABSTRACT:

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 detecta

SUBMITTER: Falcioni L 

PROVIDER: S-EPMC11925279 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature