Department of Sports and Exercise Medicine, Oulu Deaconess Institute Foundation, Oulu, Finland.
Center for Life Course Health Research, Faculty of Medicine, University of Oulu, Oulu, Finland.
PLoS One. 2019 Sep 6;14(9):e0222121. doi: 10.1371/journal.pone.0222121. eCollection 2019.
Moderate to vigorous physical activity (MVPA) has been shown to be associated with autonomic regulation of the heart measured with heart rate variability (HRV). Only a limited amount of studies have examined this relationship among adolescents, and the effects of increasing PA on HRV is not well established. The aim of this study was to investigate how overall self-reported PA associates with HRV in a large population of adolescent men.
The study was part of the Finnish MOPO study consisting of 3629 young men (mean age 18, SD 1 years) enrolled for military call-ups in 2009-2013. Overall PA, including both the intensity and frequency of habitual exercise, was assessed by a questionnaire and the respondents categorized into four groups of PA (low, moderate, high and top). Short-term HRV, physical performance and body composition were measured.
HRV, as indicated by mean ln rMSSD, increased according the PA categories as follows: low (3.65 ms (SD 0.7), p<0.001 vs. other groups), moderate (3.78 ms (0.6) p<0.001), high (3.85 ms (0.6) p<0.001) and top activity (3.93 ms (0.6) p<0.001) According to the multivariable linear regression analysis, a significant positive relationship (β = 0.129, p<0.05) was observed between self-reported PA and ln rMSSD independent of body mass index, waist circumference and fat percentage.
Physical activity was positively associated with cardiac autonomic regulation, in adolescent men. A linear increase in HRV according to PA was observed, suggesting that even slight increments in PA might be beneficial for cardiac autonomic regulation The results emphasize the importance of physical activity in improving cardiac health in young people.
中等到剧烈的身体活动（MVPA）已被证明与心率变异性（HRV）所测量的心脏自主调节有关。只有少数研究检查了青少年之间的这种关系，并且增加 PA 对 HRV 的影响尚未得到很好的确定。本研究的目的是调查在大量青少年男性中，整体自我报告的 PA 如何与 HRV 相关。
该研究是芬兰 MOPO 研究的一部分，该研究包括 3629 名年轻男性（平均年龄 18 岁，SD 1 岁），他们于 2009-2013 年应征入伍。通过问卷评估整体 PA，包括习惯性运动的强度和频率，受访者被分为四组 PA（低、中、高和最高）。短期 HRV、身体表现和身体成分进行了测量。
HRV，如平均 ln rMSSD 所示，根据 PA 类别增加如下：低（3.65ms（SD 0.7），p<0.001 与其他组相比），中（3.78ms（0.6），p<0.001），高（3.85ms（0.6），p<0.001）和最高活动（3.93ms（0.6），p<0.001）。根据多元线性回归分析，在独立于体重指数、腰围和脂肪百分比的情况下，自我报告的 PA 与 ln rMSSD 之间存在显著正相关（β=0.129，p<0.05）。
PA 与心脏自主调节呈正相关，在青少年男性中。根据 PA 观察到 HRV 的线性增加，表明即使 PA 略有增加也可能有益于心脏自主调节。结果强调了在年轻人中改善心脏健康的重要性。
