Why the study?
What are the circulatory and respiratory adaptations during prolonged exercise in the supine position in healthy young men?
Population
6 healthy young men of average physical fitness
Design
Other
Follow-up
1 hour
Authors
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May inform supine exercise hemodynamics in research settings; leaves open applicability to patients or upright exercise.
What are the circulatory and respiratory adaptations during prolonged exercise in the supine position in healthy young men?
Prolonged supine exercise is characterized by a constant cardiac output maintained by an increasing heart rate to compensate for a falling stroke volume, likely due to decreased venous tone and blood redistribution.
L G Ekelund (1966) studied this question.
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