Technological and Biological Reliability, and Validity of Five Different CPET Systems During Simulated and Human Exercise.

ABSTRACT: The validity and between-day reliability of cardiopulmonary exercise testing (CPET) systems remain largely unexplored. We therefore evaluate the validity and between-day technological and biological reliability of five popular CPET systems for assessing respiratory variables, substrate use, and energy expenditure during simulated and real human exercise. The following systems were assessed: Vyntus CPX, Oxycon Pro, VO2 Master, KORR, and Calibre. A metabolic simulator was used to simulate breath-by-breath gas exchange. The values measured by each system (minute ventilation (V̇E), breathing frequency (BF), oxygen uptake (V̇O₂), carbon dioxide production (V̇CO₂), respiratory exchange ratio (RER), energy from carbohydrates and fats, and total energy expenditure) were compa

SUBMITTER: Van Hooren B 

PROVIDER: S-EPMC12831196 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature