Key result
Higher baseline work rate linked to linearly slowed Phase II pulmonary oxygen uptake kinetics.
Population
14 men
Comparison
Three to five repetitions of ∆40 W step… vs Transitions initiated from a constant baseline…
Design
Other
Authors
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Requires accounting for baseline work rate in cardiopulmonary exercise testing; leaves open effects of heterogeneity in cardiovascular disease populations.
Observational (n=14)
p-value: p=<0.05
Phase II pulmonary oxygen uptake kinetics are slowed dependent on the pretransition work rate, suggesting strong influence by muscle metabolic and circulatory heterogeneity.
Keir et al. (2015) conducted an observational in Healthy (exercise physiology) (n=14). Variable baseline work rate transitions vs. Constant baseline condition was evaluated on Phase II pulmonary oxygen uptake time constant and functional gain (p=<0.05). Phase II pulmonary oxygen uptake kinetics were slowed dependent on the pretransition work rate, with the time constant increasing linearly (22-35 s) as baseline work rate increased (P<0.05).
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