Key result
Heart rate and oxygen uptake during severe muscular work were narrowly regulated by work output and fitness, independent of the anticipated total work duration in a trained subject.
Why the study?
Does knowledge of total work time affect the chronological changes in oxygen transport functions during severe muscular work in a trained subject?
Population
1 trained subject
Follow-up
up to 9 minutes
Authors
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Physiological responses reach identical steady-state values independent of total duration; leaves open generalizability from single-subject Level 5 data.
Does knowledge of total work time affect the chronological changes in oxygen transport functions during severe muscular work in a trained subject?
Physiological responses to severe muscular work are strictly regulated by work output and fitness, and are highly resistant to changes in the mental state regarding expected work duration.
Åstrand et al. (1960) studied this question. Constant severe muscular work with varying durations was evaluated on Chronological changes in heart rate, pulmonary ventilation, and O2 uptake. Heart rate and oxygen uptake during severe muscular work were narrowly regulated by work output and fitness, independent of the anticipated total work duration in a trained subject.
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