Department of Psychiatry and Psychotherapy, University Hospital, Jena, Germany.
Med Sci Sports Exerc. 2010 Mar;42(3):443-8. doi: 10.1249/MSS.0b013e3181b64db1.
Various measures of autonomic function have been developed, and their applicability and significance during exercise are controversial.
Physiological data were therefore obtained from 23 sport students before, during, and after exercise. Measures of R-R interval variability, QT variability index (QTvi), and electrodermal activity (EDA) were calculated. We applied an incremental protocol applying 70%, 85%, 100%, and 110% of the individual anaerobic threshold for standardized comparison.
Although HR increased stepwise, parasympathetic parameters such as the root mean square of successive differences were not different during exercise and do not mirror autonomic function satisfactorily. Similar results were observed with the approximate entropy of R-R intervals (ApEnRR). In contrast, the increase in sympathetic activity was well reflected in the EDA, QTvi, and ApEn of the QT interval (ApEnQT)/ApEnRR ratio.
We suggest that linear and nonlinear parameters of R-R variability do not adequately reflect vagal modulation. Sympathetic function can be assessed by EDA, QTvi, or ApEnQT/ApEnRR ratio.
已经开发出了多种自主功能的测量方法，但其在运动期间的适用性和意义仍存在争议。
因此，我们从 23 名运动学生在运动前、运动中和运动后获得了生理数据。计算了 R-R 间期变异性、QT 变异性指数 (QTvi) 和皮肤电活动 (EDA) 的测量值。我们应用了一个递增方案，以个体无氧阈的 70%、85%、100%和 110%进行标准化比较。
尽管 HR 逐渐增加，但在运动期间，诸如连续差异均方根等副交感神经参数没有差异，并且不能令人满意地反映自主功能。R-R 间期近似熵 (ApEnRR) 也观察到了类似的结果。相比之下，EDA、QTvi 和 QT 间期的 ApEnQT/ApEnRR 比值的 ApEnQT 均能很好地反映交感神经活动的增加。
我们建议，R-R 变异性的线性和非线性参数不能充分反映迷走神经调节。可以通过 EDA、QTvi 或 ApEnQT/ApEnRR 比值评估交感神经功能。
