Marchitto Nicola, Iannarelli Nazzareno, Paparello Paola T, Cioeta Emanuele, Parisi Francesco, Pirrone Simona, Raimondi Gianfranco
Department of Internal Medicine, Alfredo Fiorini Hospital, Terracina, Latina, Italy -
Sapienza University, Rome, Italy.
J Sports Med Phys Fitness. 2019 Oct;59(10):1779-1782. doi: 10.23736/S0022-4707.19.09358-7. Epub 2019 Jul 15.
We evaluated the role of scuba diving on cardiovascular risk in a small group of divers.
We have enrolled 14 subjects (12 males and 1 female, mean age 49±12.2 years) undergone to scuba diving (one patient did not complete the period of observation due to the b-blocker treatment). We evaluated electrocardiographyc trace and we have measured QT and RR interval to calculate the QTc index (Bazzet, Fridericia, Hodges and Framingam index) and the Tpeak to Tend index and heart rate variability index before and after scuba diving activity.
The results of our study confirm that there is a statistically significant improvement of the RR and QT index but there is not a statistically significant increase of the QTc index (QT interval normalized by heart rate) evaluated before and after scuba diving. In the same cohort of subjects, we have noted a not statistically significant improvement of Tpeak to Tend index. Our study has underlined a statistically significant modification of the SD1 and SD2 indices representative of parasympathetic and orthosympathic activity. Scuba diving activity seems to not be associated with a statistically significant variation of the cardiovascular risk.
Our data confirm that non-linear analysis is characterized by a statistically significant variation of the neurovegetative tone mainly linked to an increased parasympathetic activity. However, further studies are necessary to elucidate these preliminary findings.
我们评估了水肺潜水对一小群潜水员心血管风险的作用。
我们招募了14名受试者（12名男性和1名女性，平均年龄49±12.2岁）进行水肺潜水（1名患者因β受体阻滞剂治疗未完成观察期）。我们评估了心电图，并测量了QT和RR间期以计算QTc指数（巴泽特、弗里德里西亚、霍奇斯和弗雷明汉姆指数）以及潜水活动前后的T峰到T终指数和心率变异性指数。
我们的研究结果证实，RR和QT指数有统计学显著改善，但潜水前后评估的QTc指数（经心率校正的QT间期）没有统计学显著增加。在同一组受试者中，我们注意到T峰到T终指数没有统计学显著改善。我们的研究强调了代表副交感神经和交感神经活动的SD1和SD2指数有统计学显著变化。水肺潜水活动似乎与心血管风险的统计学显著变化无关。
我们的数据证实，非线性分析的特征是神经调节张力有统计学显著变化，主要与副交感神经活动增加有关。然而，需要进一步研究来阐明这些初步发现。
