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

This research evaluates the performance of the COSMED® Q-NRG Max metabolic system that measures key parameters like oxygen consumption (VO2), carbon dioxide production (VCO2), and energy expenditure. The study compared the system’s results with the Douglas bag method, the gold standard in metabolic testing, and found that the Q-NRG Max provides highly accurate measurements with minimal deviation, across a wide range of metabolic rates up to 6 L/min oxygen consumption (super-athletic performances)..

Additionally, the research highlighted the system's excellent repeatability, with minimal variability across repeated tests, indicating that the Q-NRG Max can produce consistent and reliable data over time. The system also demonstrated low technical error, ensuring that its measurements are precise, which is crucial for both clinical and performance assessments. Moreover, the Q-NRG Max showed a low minimum detectable change (MDC), which means it can identify meaningful shifts in metabolic parameters, making it useful for monitoring changes over time, such as those resulting from training or rehabilitation.

In conclusion, the study confirms the COSMED® Q-NRG Max as an accurate, reliable, and repeatable tool for metabolic assessments. Its portability and precision make it an ideal solution for a wide range of applications, from sports performance testing to clinical environments where traditional lab-based systems may not be feasible.