Perry Sean, Khovanova Natasha, Khovanov Igor
Annu Int Conf IEEE Eng Med Biol Soc. 2019 Jul;2019:4957-4960. doi: 10.1109/EMBC.2019.8857193.
Cardio-respiratory synchronization is a phenomenon of particular interest- especially at a 1:1 ratio- and may give greater insight into the underlying mechanisms of cardio-respiratory communication. Synchronization of this ratio is hypothesised to occur when breathing rate exceeds heart rate, which is the premise of this research. A novel experimental design focused on guiding elevated respiration to induce the entrainment of heart rate, and produce an equivalent rise in value. Application of instantaneous phase for identification and analysis of synchronization allowed for a reliable method of measuring the interaction between these stochastic processes. We have identified 1:1 phase synchronization in all volunteers measured. Longer synchronization episodes were observed reliably in athletic individuals, corroborating previous research for spontaneous breathing. This observation suggests that cardio-respiratory synchronization at all respiration rates is associated with a common underlying communication mechanism. Furthermore, it presents cardio-respiratory synchronization as a potential future measurement of fitness and autonomic health.
心肺同步是一个特别有趣的现象，尤其是1:1的比例，它可能会让我们更深入地了解心肺通信的潜在机制。当呼吸频率超过心率时，这种比例的同步被假设会发生，这是本研究的前提。一种新颖的实验设计专注于引导呼吸加快以诱导心率的同步，并使数值产生同等程度的上升。应用瞬时相位来识别和分析同步，为测量这些随机过程之间的相互作用提供了一种可靠的方法。我们在所有测量的志愿者中都发现了1:1的相位同步。在运动员个体中可靠地观察到了更长的同步时段，这证实了先前关于自主呼吸的研究。这一观察结果表明，所有呼吸频率下的心肺同步都与一种共同的潜在通信机制相关。此外，它将心肺同步呈现为一种未来潜在的健康和自主神经健康的测量指标。
