Mark S. Tremblay

Senior Scientist, CHEO Research Institute

Professor Mark Tremblay has a Bachelor of Commerce degree in Sports Administration and a Bachelor of Physical and Health Education degree from Laurentian University. His graduate training was from the University of Toronto where he obtained his M.Sc. and Ph.D. from the Department of Community Health with a specialty in Exercise Science. Dr. Tremblay is a senior scientist with the Healthy Active Living and Obesity Research (HALO) Research Group at the Children’s Hospital of Eastern Ontario Research Institute and Professor of Pediatrics in the Faculty of Medicine, University of Ottawa. He is a Fellow of the Canadian Society for Exercise Physiology, Fellow of the American College of Sports Medicine, Fellow of the Canadian Academy of Health Sciences, President of the Active Healthy Kids Global Alliance, Founder of the Sedentary Behaviour Research Network, Chair of Outdoor Play Canada, and Adjunct/Visiting Professor at five other universities on four continents.

Dr. Tremblay has published >580 scientific papers and book chapters in the areas of childhood obesity, physical activity measurement, exercise physiology, sedentary physiology, outdoor play and health surveillance. His Scopus h-index is >90 and his published research has been cited >35,000 times, consistently placing him on the Clarivate list of highly cited researchers (top 1% in the world). He has delivered over 800 scholarly conference presentations, including more than 150 invited and keynote addresses, in 22 different countries. Dr. Tremblay received an honorary doctorate from Nipissing University, the Queen Elizabeth II Diamond Jubilee Medal, the Lawson Foundation 60th Anniversary Award, the Canadian Society for Exercise Physiology Honour Award, the Victor Marchessault Advocacy Award from the Canadian Pediatric Society, the Vic Neufeld Mentorship Award in Global Health Research from the Canadian Coalition for Global Health Research, the International Network of Time-Use Epidemiologists Laureate Award, and the Canadian Institutes of Health Research Trailblazer Award in Population and Public Health Research for his leadership contributions to healthy active living in Canada and around the world. Dr. Tremblay’s most productive work has resulted from his 33-year marriage to his wife Helen, yielding four wonderful children.

Related News

Research Projects

  1. Scoping review of adult-oriented outdoor play publications in Canada


    There has been a staggering amount of articles published on adult-oriented outdoor play in Canada since 2015. Knowledge gaps remain in the relationship between outdoor play and adult mental/emotional development; the connections between environmental health and Indigenous cultures and traditions; and how to balance promoting outdoor unstructured play with protecting and preserving natural spaces.

  2. Associations between meeting 24-hour movement guidelines and quality of life among children and adolescents with autism spectrum disorder


    Significant associations were found between adhering to 24-HMB guidelines and selected QoL indicators. These findings highlight the importance of maintaining a healthy lifestyle as a key factor in promoting and preserving the QoL of children with ASD.

  3. Describing 24-hour movement behaviours among preconception and recently pregnant Canadian parents: who do we need to target?


    The aim of this study was to describe the movement behaviors of parents and parents-to-be in Canada using the 24-hour movement paradigm, as well as to determine correlates of these behaviors and whether sex-differences existed between mothers and fathers.

  4. Scoping review of children’s and youth’s outdoor play publications in Canada


    A wealth of knowledge on outdoor play in Canada has been produced since 2015. Further research is needed on the relationship between outdoor play and mental/emotional development among children and youth.

  5. Parent-perceived changes in active transportation and independent mobility among Canadian children in relation to the COVID-19 pandemic: Results from two national surveys


    Using data from two comparable national surveys, we aimed to describe parent-reported changes in children’s AT and IM from the beginning of the COVID-19 pandemic in Canada and explore correlates of behavior change.