Energy metabolism and muscle activation heterogeneity explain V O 2 ${\dot{V}}_{{{\rm{O}}}_{\rm{2}}}$ slow component and muscle fatigue of cycling at different intensities.

ABSTRACT:

New findings

What is the central question of this study? What are the physiological mechanisms underlying muscle fatigue and the increase in the O₂ cost per unit of work during high-intensity exercise? What is the main finding and its importance? Muscle fatigue happens before, and does not explain, the V ̇ O 2 ${\dot{V}}_{{{\rm{O}}}_{\rm{2}}}$ slow component ( V ̇ O 2 sc ${\dot{V}}_{{{\rm{O}}}_{\rm{2}}{\rm{sc}}}$ ), but they share the same origin. Muscle activation heterogeneity is associated with muscle fatigue and V ̇ O 2 sc ${\dot{V}}_{{{\rm{O}}}_{\rm{2}}{\rm{sc}}}$ . Knowing this may improve training prescriptions for healthy people leading to improved public health outcomes.

Abstract

This study aimed to explain the V ̇ O 2 ${\dot{V}}_{{{\rm{O}}

SUBMITTER: do Nascimento Salvador PC 

PROVIDER: S-EPMC10103881 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature