title: Objectively measured physical activity of young Canadian children using accelerometry.
abstract: The objective of the study was to describe objectively measured physical activity (PA) and sedentary time of infants, toddlers, and preschoolers and determine the proportion meeting Canadian age-specific PA guidelines. Ninety children (47 girls, 43 boys; mean age 32 (range, 4-70) months) attending scheduled health supervision visits and in the TARGet Kids! (The Applied Research Group for Kids) cohort wore an Actical accelerometer for 7 days. Participants with 4 or more valid days were included in the analysis. Time, in mean minutes per day (min/day), spent sedentary and in light PA, moderate to vigorous PA (MVPA), and total PA was determined using published cut-points; age groups were compared using ANOVA. Twenty-three percent of children <18 months (n = 28) and 76% of children aged 18-59 months (n = 45) met the guideline of 180 min/day of total PA; 13% of children ≥60 months (n = 17) met the guideline of 60 min/day of MVPA. Children <18 months spent more of their waking time per day engaged in sedentary behaviours (79%; ∼7.3 h) compared with children aged 18-59 months (63%; ∼6.6 h) and children ≥60 months (58%; ∼6.6 h). In conclusion, most children aged 18-59 months met the Canadian PA guidelines for children aged 0-4 years, whereas few younger than 18 months met the same guidelines. Only 13% of children ≥5 years met their age-specific PA guidelines. Further research is needed to develop, test, and implement effective strategies to promote PA and reduce sedentary behaviour in very young children.
authors.affiliation: a Division of Pediatric Medicine and the Pediatric Outcomes Research Team (PORT), The Hospital for Sick Children, Toronto, ON M5G 1X8, Canada.|b Child Health Evaluative Sciences, The Hospital for Sick Children Research Institute, Toronto, ON M5G 0A4, Canada.|c Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, ON M5T 3M6, Canada.|d Women's College Research Institute, Women's College Hospital, Toronto, ON M5S 1B2, Canada.
authors.forename: Cornelia M
authors.initials: CM
authors.lastname: Borkhoff
authors.affiliation: e Department of Pediatrics, Faculty of Medicine, University of Toronto, Toronto, ON M5S 1A1, Canada.
authors.forename: Liane D
authors.initials: LD
authors.lastname: Heale
authors.affiliation: a Division of Pediatric Medicine and the Pediatric Outcomes Research Team (PORT), The Hospital for Sick Children, Toronto, ON M5G 1X8, Canada.|f Applied Health Research Centre, Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, ON M5B 1W8, Canada.
authors.forename: Laura N
authors.initials: LN
authors.lastname: Anderson
authors.affiliation: g The Healthy Active Living and Obesity Research Group (HALO), Children's Hospital of Eastern Ontario Research Institute, Ottawa, ON K1H 8L1, Canada.|h Department of Pediatrics, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada.
authors.forename: Mark S
authors.initials: MS
authors.lastname: Tremblay
authors.affiliation: a Division of Pediatric Medicine and the Pediatric Outcomes Research Team (PORT), The Hospital for Sick Children, Toronto, ON M5G 1X8, Canada.|b Child Health Evaluative Sciences, The Hospital for Sick Children Research Institute, Toronto, ON M5G 0A4, Canada.|c Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, ON M5T 3M6, Canada.|e Department of Pediatrics, Faculty of Medicine, University of Toronto, Toronto, ON M5S 1A1, Canada.|f Applied Health Research Centre, Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, ON M5B 1W8, Canada.|i Department of Pediatrics, St. Michael's Hospital, Toronto, ON M5B 1W8, Canada.
authors.forename: Jonathon L
authors.initials: JL
authors.lastname: Maguire
authors.affiliation: a Division of Pediatric Medicine and the Pediatric Outcomes Research Team (PORT), The Hospital for Sick Children, Toronto, ON M5G 1X8, Canada.|b Child Health Evaluative Sciences, The Hospital for Sick Children Research Institute, Toronto, ON M5G 0A4, Canada.|c Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, ON M5T 3M6, Canada.|e Department of Pediatrics, Faculty of Medicine, University of Toronto, Toronto, ON M5S 1A1, Canada.
authors.forename: Patricia C
authors.initials: PC
authors.lastname: Parkin
authors.affiliation: a Division of Pediatric Medicine and the Pediatric Outcomes Research Team (PORT), The Hospital for Sick Children, Toronto, ON M5G 1X8, Canada.|b Child Health Evaluative Sciences, The Hospital for Sick Children Research Institute, Toronto, ON M5G 0A4, Canada.|c Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, ON M5T 3M6, Canada.|e Department of Pediatrics, Faculty of Medicine, University of Toronto, Toronto, ON M5S 1A1, Canada.
authors.forename: Catherine S
authors.initials: CS
authors.lastname: Birken
mesh_terms: D056044:Actigraphy / Q000295:instrumentation; D000367:Age Factors; D002170:Canada; D002648:Child; D002652:Child Behavior; D002675:Child, Preschool; D003430:Cross-Sectional Studies; D005260:Female; D015438:Health Behavior; D006801:Humans; D007223:Infant; D008297:Male; D009043:Motor Activity; D009864:Ontario; D063766:Pediatric Obesity / Q000175:diagnosis / Q000503:physiopathology / Q000517:prevention & control* / Q000523:psychology; D012307:Risk Factors; D040242:Risk Reduction Behavior; D057185:Sedentary Behavior; D012737:Sex Factors; D013997:Time Factors
keywords: accelerometer; accéléromètre; activité physique; directives; enfant d’âge préscolaire; guidelines; infant; nourrisson; physical activity; preschool; toddler; tout-petit