Muscle oxygen saturation plateau: Definition and verification in different oxygen availability conditions in locomotor and non-locomotor muscles.

ABSTRACT: Novel wearable near-infrared spectroscopy devices allow for a better understanding of muscle oxygenation kinetics during exercise. A muscle oxygen saturation (SmO₂) plateau is often applied in the scientific literature, but clear criteria for its definition remain unestablished to date. The aim of this study was to develop criteria allowing for definition of SmO₂ plateaus. Multiple variables associated with physiological plateaus during exercise were assessed to develop a framework for an SmO₂ plateau. Subsequently, the existence of an SmO₂ plateau during 3 min all-out cycling trials (critical oxygenation plateau) was tested in different conditions of oxygen availability (i.e., normoxia and hypoxia) in vastus lateralis and triceps brachii among 3

SUBMITTER: Kowalski T 

PROVIDER: S-EPMC12857491 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature