Why the study?
How does supine exercise affect cardiac output and oxygen extraction in normal men?
How does supine exercise affect cardiac output and oxygen extraction in normal men?
This early physiological study demonstrates that the mechanisms of oxygen transport during exercise shift from increased tissue extraction during mild exertion to increased blood flow during heavier exertion.
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Clarifies exercise oxygen transport mechanisms in healthy subjects; leaves open translation to clinical populations or disease states.
Reeves et al. (1961) studied this question.
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