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  1. Tracking of physical activity in young children.

    Article - En anglais

    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

    Logo du centre Notice produite par :
    Inist-CNRS - Institut de l'Information Scientifique et Technique

    Cote : 96-0122865

    Code Inist : 002A24. Création : 199608.