The training-induced changes on automatism, conduction and myocardial refractoriness are not mediated by parasympathetic postganglionic neurons activity - M. Zarzoso; L. Such-Miquel; G. Parra; L. Brines-Ferrando; L. Such; F. J. Chorro; J. Guerrero; A. Guill; J. E. O’Connor; A. Alberola (European Journal of Applied Physiology, 2012)