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For adults, the goal of VS is to help participants achieve a clinically significant weight loss, at least 5 % of their initial weight, and improve physical fitness (PF), defined as either maintaining or increasing the distance walked during the 6-minute walk test (6MWT), but decreasing post-test heart rate ( 14). Overall, only half of participants improved their nutritional status and fitness during the 6 months of intervention ( 12). Results for participants under 20 years showed that the program's activities contributed significantly to a decline in BMI Z-score and improved fitness (determined with 3 tests) in subjects of 2-5 years of age however, in 6-10- and 11-19-year-old participants its contribution was low. Based on this evidence, the Ministry of Health in Chile implemented the "Vida Sana" (VS) (translation: healthy lifestyle) program, a nation-wide program with the aim of preventing weight-related comorbidities in overweight and obese subjects ( 11).Īs explained in a previous article ( 12), this program was originally designed as a 12-month intervention for overweight individuals 6-45 years of age however, duration was shortened to 6 months, and the age range was expanded to include individuals aged 2 to 64 years, as the prevalence of overweight and obesity in preschool children and older adults had risen over the past decade ( 13).īecause VS participants include both children and adults, and the criteria to evaluate the program's goal is different for those under and over 20 years of age, we initially decided to determine the effectiveness separately for children and adults. There is ample evidence that behavioral factors, namely poor diet and physical inactivity, are the main causes associated with overweight and obesity ( 3- 5), and because obesity-related diseases in adults produce a heavy burden on the health care system, effective weight management programs should be implemented ( 6- 9).Ĭompared to weight management programs with either diet or physical activity, those that combine these two components have been found to be more effective ( 10).
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![intervalo pf intervalo pf](https://image.slidesharecdn.com/intervalosreais2013-130207091958-phpapp01/95/intervalos-reais-8-638.jpg)
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The most recent National Health Survey (ENS) 2016-2017, a nationally representative survey applied to subjects 15 years and older, showed the following results for men: 43.3 % overweight, 30.3 % obese, 83.3 % sedentary, 10.6 % with diabetes, 27.5 % with hypertension for women, these figures were: 36.4 %, 38.4 %, 90 %, 14 %, and 27.7 %, respectively ( 2). Chile has a very high prevalence of overweight, obesity, and weight-related comorbidities ( 1).
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