Exercise Science Commons^™

Adjustment Of Pulmonary O2 Uptake, Muscle Deoxygenation And Metabolism During Moderate-Intensity Exercise Transitions Initiated From Low And Elevated Baseline Metabolic Rates, Joshua P. Nederveen

Electronic Thesis and Dissertation Repository

When instantaneous step-wise transitions within the moderate intensity domain are initiated from elevated metabolic rates, the rate of pulmonary oxygen uptake (V̇O_2p) adjustment is slowed, and the V̇O_2p gain (ΔV̇O_2p /ΔWR) is greater. This study sought to determine the relationship between V̇O_2p kinetics and metabolic activity and energy status during step transitions from low and elevated metabolic rates within the moderate intensity domain. Ten young men completed six double-step constant load cycling bouts, consisting of step-wise transitions from 20 W to 45% θ_L and 45% θ_L [lower step (LS)] to 90% θ_{L …}