Patients and Methods
Abbreviations and Acronyms:CRF (cardiorespiratory fitness), MET (metabolic equivalent of task), NHANES (National Health and Nutrition Examination Survey), V˙o2max (maximum oxygen consumption)
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Grant Support: The work was supported by a grant (J.D.B.) from the Dedman Family Scholar in Clinical Care endowment at the University of Texas Southwestern Medical Center ; grant K23 HL092229 (J.D.B.) from the National Heart, Lung, and Blood Institute ; and grant 13GRNT14560079 (J.D.B.) from the American Heart Association .
Potential Competing Interests: Dr De Lemos has received honoraria from Astra Zeneca, consulting income from Janssen Pharmaceuticals, and serves on a Data Safety Monitoring Board for Novo Nordisk. Dr Berry is a member of the Speaker's Bureau for Merck & Co. Dr Blair serves on advisory boards for Technogym, Santech, and the Clarity Project; receives book royalties from Human Kinetics; and has unrestricted research grants from the Coca-Cola Company, Body Media, Technogym, and the National Institutes of Health.