The FTO rs17817449 Polymorphism is Not Associated With Sedentary Time, Physical Activity, or Cardiorespiratory Fitness: Findings From the GENADIO Cross-Sectional Study
in Journal of Physical Activity and HealthClick name to view affiliation
Background: Genetic variants within the FTO gene have been associated with increased adiposity and metabolic markers; however, there is limited evidence regarding the association of FTO gene variants with physical activity-related variables. The authors aimed to investigate the association of the rs17817449 single-nucleotide polymorphism of FTO with physical activity, sedentary time, and cardiorespiratory fitness in Chilean adults. Methods: A total of 409 participants from the GENADIO study were included and genotyped for the rs17817449 single-nucleotide polymorphism of FTO in this cross-sectional study. Physical activity and sedentary time were measured with ActiGraph accelerometers. Cardiorespiratory fitness was assessed using the Chester step test. The associations were assessed by using multivariate regression analyses. Results: No associations were found for FTO variant with physical activity levels and cardiorespiratory fitness. The risk allele (G) of the FTO was found to be associated with sedentary time in the minimally adjusted model (β = 19.7 min/d; 95% confidence interval, 4.0 to 35.5, per each copy of the risk allele; P = .006), but the association was no longer significant when body mass index was included as a confounder (P = .211). Conclusion: The rs17817449 single-nucleotide polymorphism of the FTO gene was not associated with the level of physical activity, cardiorespiratory fitness, and sedentary behaviors in Chilean adults.
Martorell is with the Department of Nutrition and Dietetics, Faculty of Pharmacy, University of Concepción, Concepción, Chile. Martorell and Ulloa are with the Centre for Healthy Living, University of Concepción, Concepción, Chile. Mardones, Flores, and Villagran are with the Biomedical Science Research Laboratory, School of Medicine, Universidad Católica de la Santísima Concepción, Concepción, Chile. Petermann-Rocha and Celis-Morales are with the Institute of Cardiovascular and Medical Sciences, University of Glasgow, Glasgow, United Kingdom. Petermann-Rocha is also with the Institute of Health and Wellbeing, University of Glasgow, Glasgow, United Kingdom; and the Faculty of Medicine, Universidad Diego Portales, Santiago, Chile. Martinez-Sanguinetti is with the Institute of Pharmacy, Universidad Austral de Chile, Valdivia, Chile. Leiva-Ordoñez is with the Institute de Anatomy, Histology, and Pathology, Universidad Austral de Chile, Valdivia, Chile. Troncoso-Pantoja is with the CIEDE-UCSC, Department of Public Health, Universidad Católica de la Santísima Concepción, Concepción, Chile. Cigarroa is with the Escuela de Kinesiologia, Facultad de Salud, Universidad Santo Tomas, Chile. Ulloa is also with the Department of Clinical Biochemistry and Immunology, University of Concepcion, Concepcion, Chile. Mondaca-Rojas is with the Biomedical Department, Faculty of Health Sciences, Universidad de Antofagasta, Antofagasta, Chile. Diaz-Martinez is with the Quality of Life Research Group, Department of Education Sciences, Universidad del Biobío, Chillán, Chile. Celis-Morales is also with the Centre for Research in Exercise Physiology (CIFE), Universidad Mayor, Santiago, Chile; and Human Performance Lab, Education, Physical Activity, and Health Research Unit, University Católica del Maule, Talca, Chile.
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