1 School of Health Sciences, University of Tasmania, Hobart, Australia.
2 Human and Environmental Physiology Research Unit, School of Human Kinetics, University of Ottawa, 125 University, Room 367, Montpetit Hall, Ottawa, ON, K1N 6N5, Canada.
3 Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, ON, Canada.
4 Thoracic Surgery and Critical Care Medicine, The Ottawa Hospital, Ottawa, Canada.
5 Departments of Medicine, Cardiac Sciences and Community Health Sciences, Cumming School of Medicine, Faculties of Medicine and Kinesiology, University of Calgary, Calgary, Canada.
6 Human and Environmental Physiology Research Unit, School of Human Kinetics, University of Ottawa, 125 University, Room 367, Montpetit Hall, Ottawa, ON, K1N 6N5, Canada. gkenny@uottawa.ca.
7 Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, ON, Canada. gkenny@uottawa.ca.