Comparative Contributions of Oxygen Uptake Efficiency and Maximal Oxygen Uptake to Fat Oxidation Metrics in Healthy Male Adults.

ABSTRACT:

Background

Maximal fat oxidation (MFO) and its intensity (FAT_max) are important for metabolic health, but current models explain only partially their variability. Research suggests that factors like oxygen uptake efficiency (i.e., OUES and OUEP) may better predict MFO and FAT_max than maximal oxygen uptake (VO_2max) and the first ventilatory threshold (VT1). This study investigates whether OUES and OUEP can explain more of the variation in fat oxidation during exercise.

Methods

Fifty-five healthy male participants underwent a series of tests, including body composition measurements, resting metabolic rate, and a treadmill exercise trial to assess cardiovascular fitness (CRF) and fat oxidation. The incremental exercise test measured gas exchange

SUBMITTER: Peric R 

PROVIDER: S-EPMC12532548 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature