HASKELL, WILLIAM L.; LEON, ARTHUR S.; CASPERSEN, CARL J.; FROELICHER, VICTOR F.; HAGBERG, JAMES M.; HARLAN, WILLIAM; HOLLOSZY, JOHN O.; REGENSTEINER, JUDITH G.; THOMPSON, PAUL D.; WASHBURN, RICHARD A.; WILSON, PETER W. F. Author Information
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Haskell et al. (1992) studied this question.