Department of Electrical and Computer Engineering, The College of New Jersey, PO Box 7718, Ewing, NJ 08628, United States.
Respir Physiol Neurobiol. 2010 Jun 30;172(1-2):72-80. doi: 10.1016/j.resp.2010.05.002. Epub 2010 May 7.
Cardiorespiratory variability is the product of the integration of centrally generated rhythms with feedback from central and peripheral sensors. To quantify the effect of increased central drive on scaling patterns of cardiorespiratory activity, breath-to-breath interval (BBI) and heartbeat-to-heartbeat interval (RRI) were recorded from 17 female and 17 male adult subjects at rest and at two levels of mild exercise. Temporal scaling of BBI and RRI was quantified with detrended fluctuation analysis. Relative to a resting state, exercise induced a decrease in the short-term scaling of BBI (p=0.022), an increase in the long-term scaling of RRI (p=0.006), and abolished a significant positive linear relationship in females subjects (p=0.024) and a significant negative relationship in male subjects (p=0.025) in the short-term scaling of BBI and RRI. In conclusion, exercise has opposing effects on the control of breathing and heart rate, and modulates a divergent gender-based coupling of the temporal scaling of cardiorespiratory function.
心肺变化是中枢节律整合与来自中枢和外周感受器反馈的产物。为了量化中枢驱动增加对心肺活动缩放模式的影响，从 17 名女性和 17 名男性成年受试者在休息和两种轻度运动水平下记录了呼吸间（BBI）和心跳间（RRI）的间隔。使用去趋势波动分析量化了 BBI 和 RRI 的时间标度。与休息状态相比，运动引起 BBI 的短期标度降低（p=0.022），RRI 的长期标度增加（p=0.006），并消除了女性受试者中 BBI 和 RRI 短期标度的显著正线性关系（p=0.024）和男性受试者中的显著负相关关系（p=0.025）。总之，运动对呼吸和心率的控制有相反的影响，并调节了心肺功能时间标度的性别差异耦合。
