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. 2019 Apr;27(4):653-661.
doi: 10.1002/oby.22417.

The Combination of Physical Activity and Sedentary Behaviors Modifies the Genetic Predisposition to Obesity

Carlos A Celis-Morales  1   2 , Donald M Lyall  3 , Mark E S Bailey  4 , Fanny Petermann-Rocha  1   3 , Jana Anderson  3 , Joey Ward  3 , Daniel F Mackay  3 , Paul Welsh  1 , Jill P Pell  3 , Naveed Sattar  1 , Jason M R Gill  1 , Stuart R Gray  1
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Free article

The Combination of Physical Activity and Sedentary Behaviors Modifies the Genetic Predisposition to Obesity

Carlos A Celis-Morales et al. Obesity (Silver Spring). 2019 Apr.
Free article

Abstract

Objective: This study aimed to investigate whether the association between a validated genetic profile risk score for BMI (GPRS-BMI) (based on 93 single-nucleotide polymorphisms) and phenotypic obesity (BMI) was modified by the combined categories of physical activity (PA) and sedentary behaviors in a large population-based study.

Methods: This study included cross-sectional baseline data from 338,216 white European adult men and women aged 37 to 73 years. Interaction effects of GPRS-BMI with the combined categories of PA and sedentary behaviors on BMI were investigated.

Results: There was a significant interaction between GPRS-BMI and the combined categories of objectively measured PA and total sedentary behavior (P[interaction] = 3.5 × 10-6 ); among physically inactive and highly sedentary individuals, BMI was higher by 0.60 kg/m2 per 1-SD increase in GPRS-obesity (P = 8.9 × 10-50 ), whereas the relevant BMI difference was 38% lower among physically active individuals and those with low sedentary time (β: 0.37 kg/m2 ; P = 2.3 × 10-51 ). A similar pattern was observed for the combined categories of objective PA and TV viewing (inactive/high TV viewing β: 0.60 vs. active/low TV viewing β: 0.40 kg/m2 ; P[interaction] = 2.9 × 10-6 ).

Conclusions: This study provides evidence that combined categories of PA and sedentary behaviors modify the extent to which genetic predisposition to obesity results in higher BMI.

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