Background

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 behaviors increased significantly in this age group during the pandemic of 2020/2021. Sleep directly influences aspects of health, such as blood pressure and cardiac autonomic balance and exercise has a protective effect on these same physiological parameters.

Objective

This study aimed to examine whether or not physically active adolescents positively influence HRV and cardiovascular parameters despite poor sleep quality.

Methods

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.

Results

Among 352 adolescents entrolled, mean age was 15.8 ± 0.24 years. It was observed that compared 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.

Conclusion

Adolescents who practiced physical activity regularly have shown better HRV and sleep quality compared with sedentary adolescents.

中文翻译：

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睡眠质量和定期体育锻炼可降低心脏病风险

背景

久坐不动的青少年会在电视和电子设备前花费很长时间，他们很早就患上了心血管疾病和肥胖症。在 2020/2021 年大流行期间，该年龄段的这些久坐行为显着增加。睡眠直接影响健康的各个方面，例如血压和心脏自主神经平衡，而运动对这些相同的生理参数具有保护作用。

客观的

这项研究旨在检查尽管睡眠质量差，但身体活跃的青少年是否会对 HRV 和心血管参数产生积极影响。

方法

这是一项分析性和横向研究。测量了睡眠质量、体力活动水平、血压和心率变异性 (HRV)。双向方差分析和 Tuckey 事后检验评估了组间差异。

结果

在登记的 352 名青少年中，平均年龄为 15.8 ± 0.24 岁。据观察，与睡眠质量差的体力活动组相比，久坐睡眠质量差的组在血压和 pNN50、SD1 和 HF 等自主神经参数方面表现出更显着的缺陷。

结论

与久坐不动的青少年相比，经常进行体育锻炼的青少年的 HRV 和睡眠质量更好。