1. Geriatric Research, Education, and Clinical Center, Salt Lake City Veterans Affairs Medical Center, Salt Lake City, Utah;
2. Department of Exercise and Sport Science, University of Utah, Salt Lake City, Utah;
3. Department of Health and Exercise Sciences, Skidmore College, Saratoga Springs, New York;
4. Department of Surgery, Huntsman Cancer Hospital, University of Utah, Salt Lake City, Utah;
5. Division of Surgery, Salt Lake City Veterans Affairs Medical Center, Salt Lake City, Utah; and
6. Department of Internal Medicine, University of Utah, Salt Lake City, Utah