Abstract
The G-protein ß3 subunit 825 TT genotype has been associated with obesity and hypertension. We examined the interaction between the G-protein TT genotype, physical activity and body mass index (BMI) in a cross-sectional study of African immigrants and African Americans. The genotype frequencies were 6.3% CC, 37.7% CT, and 56% TT. After adjusting for potential confounders, BMI was found to be significantly higher in the sedentary than in the physically active participants (p=0.045). There was no statistically significant effect for genotype (p=0.215) or the interaction between genotype and the level of physical activity (p=0.219). However, the individuals with the CC or CT genotype who were physically active had substantially lower BMIs (M±SE) (i.e., 25.74±2.02) than any of the other groups: sedentary CC + CT (30.58±1.03), sedentary TT (30.65±1.00) or active TT (29.43±1.65). Because of the low statistical power of this study, further research is needed to confirm these findings and to explore potential gene-environment/lifestyle interactions.
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Poston, W.S.C., Haddock, C., Spertus, J. et al. Physical activity does not mitigate G-protein-related genetic risk for obesity in individuals of African descent. Eat Weight Disord 7, 68–71 (2002). https://doi.org/10.1007/BF03354432
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DOI: https://doi.org/10.1007/BF03354432