Comparison of COSMED’S FitMate™ and K4b2 metabolic systems reliability during graded cycling exercise

Abstract

This study compared the reliability of the Cosmed FitMate™ and K4b2 metabolic systems during light to heavy steady state exercise. Expired gas, ventilation were recorded in 50 subjects, using in a random order among four sessions, either the FitMate™ or the Cosmed K4b2. No differences in oxygen consumption were observed between the two systems whatever the intensity. Intraclass correlation were high for both analyzers (respectively for the FitMate™ system and the Cosmed K4b2; ICC: 0.76–0.88 vs. 0.88–0.95). The FitMate™ metabolic system could be a useful reliable and easy-to-use metabolic system in energy expenditure measurement.

Key Words::

• Methodology
• energy expenditure
• reliability
• oxygen consumption
• exercise test

Declaration of interest: The authors report no conflict of interest. The authors alone are responsible for the content and writing of the paper. The authors have no significant relationships with, or financial interest in, any commercial companies pertaining to this article.