School of Sport, Exercise, and Rehabilitation Sciences, University of Birmingham, Birmingham, United Kingdom. Department of Kinesiology, McMaster University, Hamilton, Ontario, Canada. School of Sport and Health Sciences, University of Exeter, Exeter, United Kingdom. Garvan Institute of Medical Research, Sydney, New South Wales, Australia. St Vincents Medical School, UNSW Medicine, UNSW Sydney, Sydney, New South Wales, Australia. Medical Research Council-Arthritis Research UK Centre for Musculoskeletal Ageing Research, University of Birmingham, Birmingham, United Kingdom.