VO2 Max Estimator (Rockport-style)
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Rough VO2 max estimate from a walking test.
This estimate comes from a published regression on a timed one-mile walk — lab testing gives a far more precise VO2 max.
VO2max = 132.853 − 0.0769×weight(lb) − 0.3877×age + 6.315×(1 if male, 0 if female) − 3.2649×time(min) − 0.1565×heart rate