作者单位:Department of Physiology, University of Utah, Salt Lake City, UT, United States[1]Department of Exercise and Sport Science, University of Utah, Salt Lake City, UT, United States[2]Department of Surgery, Huntsman Cancer Hospital, University of Utah, Salt Lake City, UT, United[3]Geriatric Research Education and Clinical Center, George E. Whalen VA Medical Center, Salt Lake[4]