Population
41 college women (6 athletes, 35 untrained)
Design
Cross-sectional
Authors
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Supports brief step-test VO2 estimation in college women; leaves open validation in other populations before wider use.
A 3-minute step test provides a valid and reliable estimation of maximal oxygen intake in college women, with a standard error of prediction within 8% of actual values.
McArdle et al. (1972) studied this question.