title: Tracking of physical activity in pubertal boys with different BMI over two-year period.
abstract: We examined the tracking of physical activity (PA) measured by accelerometers and subjective self- and parental reports in normal weight and overweight and obese pubertal boys over two-year period. In total, 156 boys with mean (±SD) age of 11.53 ± 0.76 at baseline and with mean age of 13.94 ± 0.74 at 2 year follow-up were studied. At baseline and approximately two years later, the boys completed self-report questionnaire and wore an accelerometer for seven consecutive days. On the basis of first year assessment's body mass index (BMI), the children were grouped as normal weight and overweight and obese groups according to BMI cut-offs. Tracking correlations of objectively measured PA and subjectively measured PA were fairly similar across the 12-14 year-old-boys weight groups over two year period. Tracking correlations of objectively measured PA and subjectively measured PA were not significantly different over two-year period between both BMI groups. The results of the study show that pubertal boys objectively measured PA decreased over two-year period and so the boys started to be less active in their pubertal period.
authors: a Faculty of Exercise and Sport Sciences, Centre of Behavioural, Social and Health Sciences , University of Tartu , Tartu , Estonia.
authors: Triin
authors: T
authors: Rääsk
authors: Kenn
authors: K
authors: Konstabel
authors: Jarek
authors: J
authors: Mäestu
authors: Evelin
authors: E
authors: Lätt
authors: Toivo
authors: T
authors: Jürimäe
authors: Jaak
authors: J
authors: Jürimäe
mesh_terms: D061725:Accelerometry; D000293:Adolescent; D015992:Body Mass Index; D001835:Body Weight / Q000502:physiology; D002648:Child; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D009043:Motor Activity / Q000502:physiology*; D009765:Obesity / Q000503:physiopathology; D050177:Overweight / Q000503:physiopathology; D010290:Parents; D011627:Puberty / Q000502:physiology*; D057566:Self Report; D011795:Surveys and Questionnaires
keywords: activity patterns; body mass index; children; parents; self-report