Sleep quality and regular physical activity in reducing cardiac risk.

Abstract

Adolescents with sedentary behavior, spending many hours in front of the television and electronic devices, develop early involvement of cardiovascular disease and obesity. These sedentary behaviorsincreased significantly in this age group during the pandemic of2020/2021. Sleep directly influences aspectsof health, such as blood pressure and cardiac autonomic balance andexercise has a protective effect on these same physiological parameters. This study aimed to examine whether or notphysically active adolescents positively influence HRV and cardiovascular parameters despite poor sleep quality. This is an analytic and transversal study. Sleep quality, physical activity levels, blood pressure, and heart rate variability (HRV) were measured. Two-way ANOVA and Tuckey post hoc test evaluated the difference between groups. Among 352 adolescents entrolled, mean age was 15.8±0.24 years.It was observed thatcompared to the physically active group with poor sleep quality, the sedentary poor sleep quality group presented a more significant deficit in blood pressure and autonomic parameters such as pNN50, SD1, and HF. Adolescents whopracticed physical activityregularly have shown better HRV and sleep qualitycompared withsedentaryadolescents.