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  1. Changes in aerobic power of women, ages 20-64 yr.

    Article - En anglais

    This study quantified and compared the cross-sectional and longitudinal influence of age, self-report physical activity (SR-PA), and body composition (% fat) on the decline of maximal aerobic power (VO2peak) of women.

    The cross-sectional sample consisted of 409 healthy women, ages 20-64 yr.

    The 43 women of the longitudinal sample were from the same population and examined twice, the mean time between tests was 3.7 (±2.2) yr.

    Peak oxygen uptake was determined by indirect calorimetry during a maximal treadmill test.

    The zero-order correlation of - 0.742 between VO2peak and% fat was significantly (P<0.05) higher then the SR-PA (r=0.626) and age correlations (r=-0.633).

    Linear regression defined the cross-sectional age-related decline in VO2peak at 0.537 ml. kg-1. min-1. yr-1.

    Multiple regression analysis (R=0.851) showed that adding% fat and SR-PA and their interaction to the regression model reduced the age regression weight of - 0.537, to - 0.265 ml. kg-1. min-1. yr-1.

    Statistically controlling for time differences between tests, general linear models analysis showed that longitudinal changes in aerobic power were due to independent changes in% fat and SR-PA, confirming the cross-sectional results.

    These findings are consistent with men's data from the same lab showing that about 50% of the cross-sectional age-related decline in VOpeak was due to% fat and SR-PA.

    Mots-clés Pascal : Sénescence, Epidémiologie, Consommation oxygène maximum, Composition corporelle, Exercice physique, Homme, Femelle

    Mots-clés Pascal anglais : Senescence, Epidemiology, Maximum oxygen consumption, Body composition, Physical exercise, Human, Female

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

    Cote : 96-0421468

    Code Inist : 002A24. Création : 10/04/1997.