1. Research Program in Men’s Health, Aging, and Metabolism, Brigham and Women’s Hospital , Boston, Massachusetts , USA
2. Institute on Aging, University of Florida , Gainesville, Florida , USA
3. Division of Physical Therapy, Department of Public Health and Community Medicine, School of Medicine, Tufts University , Phoenix, Arizona , USA
4. Department of Psychology, Brandeis University , Waltham, Massachusetts , USA
5. Nutrition, Exercise Physiology, and Sarcopenia Laboratory, Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University , Boston, Massachusetts , USA