Associations of Objectively Measured Physical Activity and Abdominal Fat Distribution

Annelotte Philipsen, Anne-Louise Smidt Hansen, Marit Eika Jørgensen, Søren Brage, Bendix Carstensen, Annelli Sandbaek, Thomas Peter Almdal, Jeppe Gram, Erling Bjerregaard Pedersen, Torsten Lauritzen, Daniel Rinse Witte

    17 Citationer (Scopus)

    Abstract

    INTRODUCTION/PURPOSE: Visceral adipose tissue (VAT) and physical activity are both independent predictors of type 2 diabetes. Physical activity and overall obesity are inversely associated with each other. Yet the nature of the association between objectively measured dimensions of physical activity and abdominal fat distribution has not been well characterised. We aimed to do so in middle-aged to elderly population at high risk of diabetes.

    METHODS: A cross-sectional analysis of 1134 participants of the ADDITION-PRO study. VAT and subcutaneous adipose tissue (SAT) were assessed one-dimensionally by ultrasonography and physical activity with combined accelerometry and heart rate monitoring. Linear regression of physical activity energy expenditure (PAEE) and time spent in different physical activity intensity levels on VAT and SAT was performed.

    RESULTS: Median BMI was 26.6 kg/m and PAEE 28.1 kJ/kg/day, with 18.9 hours/day spent sedentary, 4.5 hours/day in light-intensity physical activity, and 0.4 hours/day in moderate-intensity physical activity. PAEE was significantly negatively associated with VAT and for women also SAT. The difference in VAT was -1.1mm (95%CI:-1.8;-0.3) per 10 kJ/kg/day increment, and the corresponding difference in SAT for women was -0.6mm (95%CI:-1.2;-0.04), in models adjusted for age, sex and waist circumference. Exchanging one hour of light physical activity with moderate physical activity was significantly associated with VAT (-4.5mm, 95%CI: -7.6;-1.5). Exchanging one sedentary hour with light physical activity was significantly associated with both VAT (-0.9mm, 95%CI: -0.1;-1.8) and SAT (-0.4mm, 95%CI: -0.0;-0.7).

    CONCLUSIONS: In this population with low physical activity levels, cross sectional findings indicate that increasing overall physical activity and decreasing time spent sedentary is important in order to avoid the accumulation of metabolically deleterious VAT.

    OriginalsprogEngelsk
    TidsskriftMedicine and Science in Sports and Exercise
    Vol/bind47
    Udgave nummer5
    Sider (fra-til)983–989
    ISSN0195-9131
    DOI
    StatusUdgivet - 2015

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