Factors determining training-induced changes in V<scp>O</scp><sub>2max</sub>, critical power, and V<scp>O</scp><sub>2</sub> on-kinetics in skeletal muscle
Bernard Korzeniewski, Harry B. Rossiter
Abstract
A mechanism of the training-induced changes in V̇O 2max , critical power, and V̇O 2 on-kinetics in skeletal muscle reported in the literature is postulated. It involves the self-driving “P i double-threshold” mechanism of muscle fatigue underlying exercise inefficiency, the slow component of the V̇O 2 on-kinetics, and termination of exercise. It is proposed that an increase in OXPHOS activity and decrease in peak P i at which exercise terminates are responsible for the training-induced changes in the muscle bioenergetic system.
Topics & Concepts
Skeletal muscleBioenergeticsOxidative phosphorylationKineticsBiophysicsChemistryVO2 maxEndurance trainingOxygen transportOxygenInternal medicineBiochemistryEndocrinologyBiologyPhysicsMedicineMitochondrionHeart rateQuantum mechanicsOrganic chemistryBlood pressureCardiovascular and exercise physiologyMuscle activation and electromyography studiesSports Performance and Training