title: Health associations with meeting new 24-hour movement guidelines for Canadian children and youth.
abstract: The study objective was to examine whether meeting the new Canadian 24-hour movement guidelines was associated with health indicators in a representative sample of Canadian children and youth. Cross-sectional findings are based on 4157 (1239 fasting subsample) children and youth aged 6-17years from cycles 1-3 of the Canadian Health Measures Survey (CHMS). Sleep and screen time were subjectively measured while moderate- to vigorous-intensity physical activity (MVPA) was accelerometer-determined. Health indicators in the full sample (body mass index (BMI) z-scores, waist circumference, blood pressure, behavioral strengths and difficulties score (lower=better), and aerobic fitness) and fasting subsample (triglycerides, high-density lipoprotein (HDL)-cholesterol, C-reactive protein, and insulin) were measured. Meeting the overall guidelines was defined as: 9-11 hour/night (5-13years) or 8-10 hour/day (14-17years) of sleep, ≤2 hour/day of screen time, and ≥60 minute/day of MVPA. Compared to meeting all three recommendations, meeting none, one, and two recommendations were associated with a higher BMI z-score, waist circumference, and behavioral strengths and difficulties score and lower aerobic fitness in a gradient pattern (Ptrend<0.05). Additionally, compared to meeting all three recommendations, meeting none and one recommendation were associated with higher systolic blood pressure and insulin (Ptrend<0.05). Finally, compared to meeting all three recommendations, meeting no recommendations was associated with higher triglycerides and lower HDL-cholesterol (Ptrend<0.05). Collectively, meeting more recommendations within the 24-hour movement guidelines was associated with better overall health. Since a small proportion (17%) of this representative sample was meeting the overall guidelines, efforts to promote adoption are needed.
authors.affiliation: Faculty of Physical Education and Recreation, University of Alberta, Edmonton, AB T6G 2H9, Canada. Electronic address: vlcarson@ualberta.ca.
authors.forename: Valerie
authors.initials: V
authors.lastname: Carson
authors.affiliation: Healthy Active Living and Obesity Research Group, Children's Hospital of Eastern Ontario Research Institute, Ottawa, ON K1H 8L1, Canada.
authors.forename: Jean-Philippe
authors.initials: JP
authors.lastname: Chaput
authors.affiliation: School of Kinesiology and Health Studies and Department of Public Health Sciences, Queen's University, Kingston, ON, K7L 3N6, Canada.
authors.forename: Ian
authors.initials: I
authors.lastname: Janssen
authors.affiliation: Healthy Active Living and Obesity Research Group, Children's Hospital of Eastern Ontario Research Institute, Ottawa, ON K1H 8L1, Canada.
authors.forename: Mark S
authors.initials: MS
authors.lastname: Tremblay
mesh_terms: D002170:Canada; D015444:Exercise / Q000502:physiology*; D017408:Guidelines as Topic; D006304:Health Status; D006306:Health Surveys; D006801:Humans; D012307:Risk Factors; D057185:Sedentary Behavior; D012890:Sleep / Q000502:physiology; D013997:Time Factors
keywords: Pediatric population; Physical activity; Recommendations; Risk factors; Sedentary behavior; Sleep