Centre de Recherche du Centre Hospitalier Universitaire Sainte-Justine, University of Montreal, Montréal, Québec, Canada; Department of Pediatrics, Faculty of Medicine, Université de Montréal, Montréal, Québec, Canada. Ingram School of Nursing, McGill University, Montreal, Québec, Canada. Centre de Recherche du Centre Hospitalier Universitaire Sainte-Justine, University of Montreal, Montréal, Québec, Canada; Epidemiology and Biostatistics Unit, Institut national de la recherche scientifique (INRS)-Institut Armand-Frappier, Laval, Québec, Canada. Department of Physical Education, Université Laval, Québec, Québec, Canada. Ingram School of Nursing, McGill University, Montreal, Québec, Canada; Department of Medicine, McGill University, Montréal, Québec, Canada; Respiratory Epidemiology and Clinical Research Unit, McGill University Health Centre, Montréal, Québec, Canada. Department of Kinesiology, Université Laval, Québec, Québec, Canada. Centre de Recherche du Centre Hospitalier Universitaire Sainte-Justine, University of Montreal, Montréal, Québec, Canada; Division of Endocrinology, Department of Pediatrics, Centre Hospitalier Universitaire Sainte-Justine and Université de Montréal, Montréal, Québec, Canada. Electronic address: melanie.henderson.hsj@gmail.com.