Impacto da atividade física habitual sobre os componentes da Síndrome Metabólica em adolescentes

• Autor(a) principal: Faria, Ricardo Campos de
• Data de Publicação: 2014
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: LOCUS Repositório Institucional da UFV
• Texto Completo: http://locus.ufv.br/handle/123456789/3492
• topic: Exercícios físicos; Síndrome Metabólica; Adolescentes; Exercise; Metabolic syndrome; Teens; CNPQ::CIENCIAS DA SAUDE::EDUCACAO FISICA

The steady increase in the prevalence of obesity and hypertension among children and adolescents has favored the emergence of the metabolic syndrome (MS) in this population. Sedentary behavior and low levels of physical activity have been associated with cardiovascular diseases and SM. The school is a privileged place to promote increased physical activity, especially through recreational sports site. The purpose of this study was to evaluate the impact of a program of sports activities on the metabolic profile in adolescents. We evaluated blood samples, blood pressure, body weight, height, body mass index (BMI), waist circumference, percent body fat, food intake frequency questionnaire (FFQ) and daily time in moderate to vigorous physical activity (MVPA) of 92 male adolescents aged 14 to 18 years old (16.07 ± 0.93). From the initial sample, 36 (39.1%) showed positive diagnosis or preview SM. Among the 36 adolescents with a positive diagnosis, 25 completed the second stage, which were divided into control group (n=13) and intervention group (n=12), who participated in a program of recreational sports activities lasting 14 weeks. Data analysis was performed using descriptive statistics, linear regression, Student t test, paired t test or its corresponding nonparametric when needed. The results revealed the waist circumference at the point of smaller circumference as a good predictor of metabolic and promising substitute of BMI. The pre-and post-sports program evaluation showed a reduction in total cholesterol, low density lipoprotein (LDL-c) and non-HDL cholesterol, increased high-density lipoprotein (HDL-c) and MVPA time in the intervention group. The control group after 14 weeks reduced sedentary behavior (SB), triglycerides, LDL-C and non-HDL cholesterol, and increased HDL-c. The FFQ did not change between periods. Sports activities contributed with 42% of the daily recommendation of MVPA. Anthropometric components did not change after 14 weeks of sporting activities. In conclusion this study shows that recreational sports activities impacted positively on lipid profile and helped increase the time spent in MVPA. The reduction in SB also promoted improvement in metabolic parameters and should be encouraged as part of a healthy lifestyle. Further studies with longer intervention should be performed in order to obtain larger effects on anthropometric parameters related to cardiovascular risk.