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  1. Television viewing, physical activity, and health-related fitness of youth in the Québec Family study.

    Article - En anglais


    To evaluate the relationships among television viewing time (TVTIME), physical activity, and health-related fitness in youth 9-18 years of age from the Quebec Family Study.


    The sample included 423 males and 361 females 9-18 years of age from the greater Quebec city area.

    TVTIME, daily energy expenditure (EE), and moderate to vigorous physical activity (MVPA) were estimated.

    Four health-related fitness variables were tested : knee extension strength, physical work capacity at 150 beats min-1, situps, and sum of skinfolds.

    The body mass index (BMI) was also included.

    Relationships were assessed using correlations and analysis of covariance.


    Correlations between TVTIME and EE and MVPA were low and not significant, with no pattern by age group and gender.

    Those between TVTIME and fitness variables were also low and generally not significant, with no pattern by age and gender.

    Adolescents in the highest and lowest quartiles of TVTIME showed no consistent differences in EE, MVPA, and the four fitness items.

    Similarly, adolescents in the highest and lowest quartiles of EE, MVPA, and each fitness item did not consistently differ in TVTIME.


    The results indicate that time watching television has only a weak association with indicators of physical activity and health-related fitness in Quebec youth.

    Since the data are from the early 1980s, generalizations to more current samples should be tempered with care.

    Mots-clés Pascal : Télévision, Temps exposition, Durée, Exercice physique, Indice masse corporelle, Endurance, Rythme cardiaque, Hémodynamique, Muscle quadriceps, Jambe, Membre inférieur, Tissu adipeux, Distribution, Souscutané, Composition corporelle, Adolescent, Homme, Québec, Canada, Amérique du Nord, Amérique, Epidémiologie, Santé physique

    Mots-clés Pascal anglais : Television, Exposure time, Duration, Physical exercise, Body mass index, Endurance, Heart rate, Hemodynamics, Quadriceps muscle, Leg, Lower limb, Adipose tissue, Distribution, Subcutaneous, Body composition, Adolescent, Human, Quebec, Canada, North America, America, Epidemiology

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

    Cote : 99-0015012

    Code Inist : 002B30A03B. Création : 31/05/1999.