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ARTÍCULO DE INVESTIGACIÓN Conclusiones Altos niveles de sedentarismo tienen un efecto nocivo sobre factores de riesgo cardiovascular y metabólicos, asociados a la obesidad. Disminuir el tiempo destinado a actividades de bajo costo energético, como pasar mucho tiempo sentado, debiera ser una recomendación indispensable en las futuras guías de AF para la población. Agradecimientos: Se agradece de forma especial a los doctores: Francisco Pérez, Natalia Ulloa y Carlos Calvo por su contribución en la recolección de datos de ese estudio; y a los doctores Jason Gill y Mark Bailey por su contribución en el diseño. Referencias 1. Owen N, Healy GN, Matthews CE, Dunstan, DW. Too Much Sitting: The Population Health Science of Sedentary 466 Behavior. Exerc Sport Sci Rev 2010; 38 (3): 105-13. 2. Dunstan DW, Howard B, Healy GN, Owen N. Too much sitting-A health hazard. Diabetes Res Clin Pract 2012; 97 (3): 368-76. 3. Cristi-Montero C, Celis-Morales C, Ramírez-Campillo R, Aguilar-Farías N, Álvarez C, Rodríguez-Rodríguez F. Sedentary behaviour and physical inactivity is not the same!: An update of concepts oriented towards the prescription of physical exercise for health. Rev Med Chile 2015; 143 (8): 1089-90. 4. Matthews CE, Chen KY, Freedson PS, Buchowski MS, Beech BM, Pate RR, et al. Amount of time spent in sedentary behaviors in the united states, 2003-2004. Am J Epidemiol 2008; 167 (7): 875-81. 5. Colley RC, Garriguet D, Janssen I, Craig CL, Clarke J, Tremblay MS. Physical activity of Canadian adults: accelerometer results from the 2007 to 2009 Canadian Health Measures Survey. Health Rep 2011; 22 (1): 7-14. 6. Bennie JA, Chau JY, van der Ploeg HP, Stamatakis E, Do A, Bauman A. The prevalence and correlates of sitting in European adults-a comparison of 32 Eurobarometer participating countries. Int J Behav Nutr Phys Act 2013; 10: 107. 7. Celis-Morales C, Salas C, Alduhishy A, Sanzana R, Martínez MA, Leiva A, et al. Socio-demographic patterns of physical activity and sedentary behaviour in Chile: results from the National Health Survey 2009-2010. J Public Health 2016; 38 (2): e98-e105. 8. Celis-Morales CA, Pérez-Bravo F, Ibañes L, Sanzana Sedentarismo y salud metabólica - A. M. Leiva et al R, Hormazábal E, Ulloa N, et al. Insulin Resistance in Chileans of European and Indigenous Descent: Evidence for an Ethnicity x Environment Interaction. PLoS One 2011; 6 (9): e24690. 9. Celis-Morales C, Salas C, Álvarez C, Aguilar-Farías N, Ramírez-Campillo R, Leppe J, et al. Higher physical activity levels are associated with lower prevalence of cardiovascular risk factors in Chile. Rev Med Chile 2015; 143 (11): 1435-43. 10. Celis-Morales CA, Pérez-Bravo F, Ibáñez L, Salas C, Bailey MES, Gill JMR. Objective vs. self-reported physical activity and sedentary time: effects of measurement method on relationships with risk biomarkers. PloS one 2012; 7 (5): e36345. 11. Cristi-Montero C. Considerations regarding the use of metabolic equivalents when prescribing exercise for health: preventive medicine in practice. Physician Sportsmed 2016; 44 (2): 109-11. 12. WHO. Obesity: preventing and managing the global epidemic. Report of a WHO consultation. World Health Organization technical report series 2000; 894: i-xii, 1-253. 13. Ministerio de Salud de Chile, MINSAL. Enfoque de riesgo para la prevención de enfermedades cardiovasculares. Consenso 2014. 14. Durnin JVGA, Womersley J. Body fat assessed for, total-body density and its estimation from skinfold thickness: measurement on 481 men and women aged from 16 to 72 years. Br J Nutr 1974; 32 (1): 77-97. 15. Friedewald WT, Levy RI, Fredrickson DS. Estimation of concentration of low-density lipoprotein cholesterol in plasma, without use of preparative ultracentrifuge. Clin Chem 1972; 18 (6): 499-502. 16. Matthews DR, Hosker JP, Rudenski AS, Naylor BA, Treacher DF, Turner RC. Homeostasis model assessment: insulin resistance and beta-cell function from fasting plasma glucose and insulin concentrations in man. Diabetologia 1985; 28 (7): 412-9. 17. B uckley JP, Sim J, Eston RG, Fox HR. Reliability and validity of measures taken during the Chester step test to predict aerobic power and to prescribe aerobic exercise. Br J Sports Med 2004; 38 (2): 197-205. 18. Freedson P, Bowles HR, Troiano R, Haskell W. Assessment of physical activity using wearable monitors: recommendations for monitor calibration and use in the field. Med Sci Sports Exerc 2012; 44 (1 Suppl 1): S1-4. 19. Freedson PS, Melanson E, Sirard J. Calibration of the Computer Science and Applications, Inc. accelerometer. Med Sci Sports Exerc 1998; 30 (5): 777-81. 20. Brocklebank L, Falconer C, Page A, Perry R, Cooper AR. Accelerometer-measured sedentary time and cardiome- Rev Med Chile 2017; 145: 458-467


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