Jean-Philippe Chaput

Senior Scientist, CHEO Research Institute

Dr. Chaput is a Senior Scientist with the Healthy Active Living and Obesity Research Group at the CHEO Research Institute and a Professor of Pediatrics at the University of Ottawa. His research focuses on obesity prevention, health promotion, and lifestyle behaviour modification (e.g., improving sleep, increasing physical activity, reducing screen time, and eating better). Dr. Chaput has published more than 400 peer-reviewed scientific articles and is highly cited. He serves on many journal editorial boards and advisory committees, has contributed to a large number of conferences around the world, and received several awards for his research. Outside work he likes to travel, run in the forest, and play with his daughter.

Related News

Research Projects

  1. Bidirectional associations of sleep and discretionary screen time in adults: Longitudinal analysis of the UK biobank


    Poor sleep at baseline was associated with high DST at follow up, and vice-versa. Participants with either an intermediate or a poor sleep pattern showed higher odds for high DST at follow-up compared with participants having a healthy sleep pattern.

  2. Sleep quality, physical activity, screen time, and substance use in children with obesity: associations with obstructive sleep apnea


    In children with obesity, more substance-use behaviors were independently associated with greater OSA severity. As there are complex, bidirectional relationships between lifestyle behaviors and OSA severity, interventions need to be comprehensive and multifactorial to ensure successful treatment of OSA and its sequelae in children.

  3. Delaying children’s bedtime affects food intake and is related to emotions rather than satiety


    Overall, this study provides good scientific evidence that delaying children’s bedtime by only one hour increases food intake, especially ultraprocessed and noncore foods. Findings from this study also remind us that there is emotional eating associated with sleep loss. Given that school start times are fixed on weekdays, parents should ensure a consistent bedtime routine that allows children to obtain sufficient sleep (i.e., 9–11 h per night). Removing digital devices (e.g., cellphones, TVs) from children’s bedrooms and making sure children are physically active for at least one hour daily (especially outside) can go a long way to ensure a healthy sleep.

  4. The relationship between physical activity and depressive symptoms is domain-specific, age-dependent, and non-linear: An analysis of the Brazilian national health survey


    Non-linear relationships between PA and depressive symptoms were observed for all PA domains among the Brazilian population. The like-lihood of depressive symptoms was lower in participants who engaged in leisure-time PA but higher among those with higher levels of PA in the domains of domestic, occupational, and transport. Nevertheless, older adults who engaged in higher levels of domestic PA and transport PA. were less likely to have depressive symptoms than those who were not engaged

  5. The role of insufficient sleep and circadian misalignment in obesity


    Growing evidence indicates that both insufficient sleep and circadian misalignment contribute to adverse metabolic health and obesity by altering multiple components of energy metabolism and behaviour. Insufficient sleep increases 24 h energy expenditure and, under controlled energy intake conditions, changes in appetite hormones occur that promote hunger and energy intake.