The purpose of this study was to determine whether physical activity behavior tracks during early childhood.
Forty-seven children (22 males, 25 females) aged 3-4 yr at the beginning of the study were followed over a 3-yr period.
Heart rates were measured at least 2 and up to 4 d. yr-1 with a Quantum XL Telemetry heart rate monitor.
Physical activity was quantified as the percentage of observed minutes between 3 : 00 and 6 : 00 p.m. during which heart rate was 50% or more above individual resting heart rate (PAHR-50 Index).
Tracking of physical activity was analyzed using Pearson and Spearman correlations.
Yearly PAHR-50 index tertiles were created and examined for percent agreement and Cohen's kappa.
Repeated measures ANOVA was used to calculate the intraclass correlation coefficient across the 3 yr of the study.
Spearman rank order correlations ranged from 0.57 to 0.66 (P<0.0001).
Percent agreement ranged from 49% to 62%. The intraclass R for the 3 yr was 0.81.
It was concluded that physical activity behavior tends to track during early childhood.
Mots-clés Pascal : Exercice physique, Rythme cardiaque, Monitorage, Facteur risque, Enfant, Homme
Mots-clés Pascal anglais : Physical exercise, Heart rate, Monitoring, Risk factor, Child, Human
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 96-0122865
Code Inist : 002A24. Création : 199608.