1. From the Departments of Exercise Science (D.C.L., X.S., E.G.A., S.N.B.) and Epidemiology/Biostatistics (S.N.B.), Arnold School of Public Health, University of South Carolina, Columbia, South Carolina; Department of Medical Physiology, School of Medicine, University of Granada, Granada, Spain (E.G.A.): Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, and Department of Epidemiology, Harvard School of Public Health, Boston, Massachusetts (I.M.L.); Department of Preventive...