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Full-Text Articles in Exercise Science
Postexercise Executive Function Benefits And Cerebral Blood Flow: In The Lab And At Home, Benjamin Tari
Postexercise Executive Function Benefits And Cerebral Blood Flow: In The Lab And At Home, Benjamin Tari
Electronic Thesis and Dissertation Repository
A single bout of aerobic exercise improves executive function; however, the mechanism, or mechanisms, supporting this improvement remain unclear. One candidate mechanism is an exercise-mediated increase in cerebral blood flow (CBF) that enhances the efficiency of executive-related frontoparietal networks. To evaluate the link between exercise, CBF and executive function, three separate experiments were conducted. In the first study, separate 10-min sessions of moderate-to-heavy-intensity aerobic exercise, and a hypercapnic environment (i.e., 5% CO2) were implemented. The hypercapnic condition was included because it increases CBF independent of the metabolic demands of exercise. The second study investigated whether exercise intensity-specific changes …
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
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 (V̇O2p) adjustment is slowed, and the V̇O2p gain (ΔV̇O2p /ΔWR) is greater. This study sought to determine the relationship between V̇O2p 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% θL and 45% θL [lower step (LS)] to 90% θL …