O impacto da atividade física na qualidade do sono e na cortisolemia em adolescentes com excesso de peso: Intervenção com videogame ativo

Abstract

Objective: To evaluate the effect of physical activity through active video game on sleep quality and cortisol levels in overweight adolescents. Methods: A quasi -experimental study of 55 adolescents (15-19), obese or overweight, from public schools in Campina Grande-PB. The intervention was performed during 8 weeks using the active video game to perform physical activity three times a week for 50 minutes. The level of physical activity and sleep quality were analyzed through the International Physical Activity Questionnaire - IPAQ, the Pittsburgh Sleep Quality Index-IQSP and cortisol levels through blood collection. The impact of the intervention was assessed through the t-paired or Wilcoxon test and its effect on the activity level through the McNemar test. The correlation of cortisolemia was evaluated at the end of the intervention using the Spearman test. Results: Poor sleep quality was present in 65.5% of adolescents and cortisolem was elevated in 10.9%. The use of videogame was associated with increased physical activity (p = 0.039) in females and decreased cortisol level in males (p = 0.005), but did not alter sleep quality among adolescents (p = 0.406) . Conclusions: The use of videogame provided a significant improvement in the level of physical activity among girls and the reduction of cortisol in males, but did not influence the quality of sleep in both sexes.