RESUMO
Determining the locations where adolescents tend to accumulate greater amounts of physical activity may assist policymakers to address the built environment design and promote PA. This study evaluated the association between the availability of recreational facilities and average minutes of moderate to vigorous physical activity (MVPA) per day of US adolescents in 2017 (n = 1,437). Data for this cross-sectional study were obtained from the 2017 Family Life, Activity, Sun, Health, and Eating study, an internet-based study collecting information on diet and PA of parent and adolescent dyads. Adolescents aged 12-17 from the US were included. Predicted daily minutes of MVPA were calculated. The exposure variables of interest were the availability of school recreational facilities, indoor recreational facilities, playing fields, bike/hiking/walking trails or paths or public parks. Participants were excluded if no information was provided for MVPA or availability of recreational facilities. Unadjusted and adjusted linear regression analysis was used to calculate mean daily minutes of MVPA and their corresponding 95 % confidence intervals. In fully adjusted models, we found statistically significant associations between the type of recreational facility and differences in daily minutes of MVPA for school (p-value < 0.001) and public parks p-value < 0.001), but not for the other recreational facilities. The average daily minutes of MVPA differed by 4.4 min (95 % CI 2.6, 6.2) if participants had school recreational facilities, respectively. School recreational facilities are important for engaging adolescents in PA objectives. Features within school recreational facilities should be studied to further investigate contributions to increased PA levels.
RESUMO
Introducción: La vida moderna viene generando un incremento significativo en la prevalencia del sedentarismo, así como también, alteraciones en los patrones dietéticos tanto de niños como adolescentes; lamentablemente, ambos factores son capaces de modificar la composición corporal y deteriorar la capacidad aeróbica, aspectos que se pueden traducir en el incremento en el riesgo de padecer enfermedades crónicas no transmisibles y el consiguiente aumento de la morbimortalidad. Objetivos. Determinar el grado de relación entre la masa muscular y grasa con la capacidad aeróbica en varones de 10 a 16 años de un Centro Educativo Particular en Lima año 2012. Diseño: Estudio descriptivo de asociación cruzada, transversal y observacional. Participantes. Ciento trece escolares de sexo masculino de 12 a 16 años de edad. Intervenciones: Previo consentimiento informado, se determinó el porcentaje de masa muscular y grasa, mediante antropometría, y capacidad aeróbica a través del volumen máximo de oxígeno (V02máx.) utilizando un test físico. Principales medidas de resultados: Porcentaje de masa muscular y grasa, y consumo de oxigeno máximo expresado en ml/kg/min. Resultados: Los valores promedio para masa muscular y masa grasa, y capacidad aeróbica fueron de 41.44%, 20.59% Y 45.47 ml/kg/m, respectivamente. Se obtuvo una correlación positiva y significativa (p
Introduction. Modern life has generated a significant increase in the prevalence of sedentary lifestyles, as well as alterations in dietary patterns of both children and adolescents, unfortunately, both factor s are able to modify body composition and impair aerobic capacity, both of which can be translate into an increase in the risk of chronic noncommunicable diseases and the consequent increase in morbidity and mortality. Objective. To determine the degree of relationship between muscle mass and fat with aerobic capacity in men 10 to 16 years of educational Private School in Lima in 2012. Design: Descriptive cross, transversal, prospective observational association. Participants. One hundred and thirteen male students between 12 and 16 years old. Interventions. When Informed consent was obtein, the percentage of muscle mass and fat by anthropometry and aerobic capacity was determined using the maximum volume of oxygen (V02máx.) using a physical test. Main outcome measures. Percentage of muscle mass and fat, and maximum oxygen consumption expressed in mil kg 1m. Results: The mean values for muscle mass and fat mass , and aerobic capacity were 41.44 % , 20.59 % and 45.47 mil kg I m, respectively. A significant positive correlation (p < 0.01 ) was obtained between the percentage of muscle mass and V02max (r = 0.61) and a significant negative correlation (p < 0.01) between the percentage of fat mass and V02max (r = - 0.57) in the study group (113 men). Conclusion. The relationship of the variables body mass and fat mass and aerobic capacity in the sample had a strength of association "High ", this was positive for muscle mass anc was negative for fat mass , the relationship was significant in both cases.
