1 Department of Kinesiology and Health Sciences, College of Humanities and Sciences, Virginia Commonwealth University, Richmond, Virginia.
2 Division of Cardiovascular Medicine, Internal Medicine, University of Michigan, Ann Arbor, Michigan.
3 Division of Cardiovascular Medicine, Internal Medicine, University of Michigan, Ann Arbor, Michigan; VCU Pauley Heart Center, Division of Cardiology, Department of Internal Medicine, Virginia Commonwealth University, Richmond, Virginia.
4 VCU Pauley Heart Center, Division of Cardiology, Department of Internal Medicine, Virginia Commonwealth University, Richmond, Virginia; Robert M. Berne Cardiovascular Research Center, Department of Medicine, Division of Cardiovascular Medicine, School of Medicine, University of Virginia, Charlottesville, Virginia.
5 Department of Kinesiology and Health Sciences, College of Humanities and Sciences, Virginia Commonwealth University, Richmond, Virginia; VCU Pauley Heart Center, Division of Cardiology, Department of Internal Medicine, Virginia Commonwealth University, Richmond, Virginia.
6 Department of Kinesiology and Health Sciences, College of Humanities and Sciences, Virginia Commonwealth University, Richmond, Virginia; VCU Pauley Heart Center, Division of Cardiology, Department of Internal Medicine, Virginia Commonwealth University, Richmond, Virginia. Electronic address: scarbone@vcu.edu.