Objective: To elucidate the effect of auriculopuncture in Sympathetic points on autonomic function, we investigated heart rate (HR) response to orthostatic challenge healthy subjects. Design and setting: An experimental cross-sectional study was conducted at Acupuncture Clinic, Universidad Autónoma Metropolitana, México. Participants. Twenty university students (twelve women) aged 22.7 ± 1.5 (m...

Venkatesan, Priya, Sunit Baxi, Cory Evans, Robert Neff, Xin Wang, and David Mendelowitz. Glycinergic inputs to cardiac vagal neurons in the nucleus ambiguus are inhibited by nociceptin and -selective opioids. J Neurophysiol 90: 1581–1588, 2003. First published May 21, 2003; 10.1152/jn.01117.2002. Most parasympathetic regulation of heart rate originates from preganglionic cardiac vagal neurons w...

Previous work demonstrated that oxytocinergic projections to the solitary vagal complex are involved in the restraint of exercise-induced tachycardia (2). In the present study, we tested the idea that oxytocin (OT) terminals in the solitary vagal complex [nucleus of the solitary tract (NTS)/dorsal motor nucleus of the vagus (DMV)] are involved in baroreceptor reflex control of heart rate (HR). ...

Atrial natriuretic peptide (ANP) potentiates vagal cardiopulmonary reflexes due to chemosensory (Bezold-Jarisch [B-J] reflex) or mechanosensory (ramp baroreflex) activation. The ANP receptor mediating these actions is unknown. We examined the role of particulate guanylyl-cyclase (pGC) receptors in ANP-induced enhancement of cardiopulmonary vagal reflexes. Cardiopulmonary baroreceptor reflex fun...

IT IS WELL KNOWN THAT ATHLETES have a low resting heart rate, i.e., a resting bradycardia and heart rates below 30 beats/min have been reported (7). For example, Wikipedia states that the Tour de France cyclist, Miguel Indurain, had a resting heart rate of 28 beats/min when race fit. The resting bradycardia in athletes is most often attributed to high vagal tone, i.e., high parasympathetic nerv...

Background: Moderate regular physical activity is indicated to avoid atrial fibrillation (AF), whereas athletes should be counseled that long-lasting vigorous sports engagement may cause AF, according the 2016 European Society of Cardiology (ESC) recommendations for AF treatment. Exercise and are complex. Objectives: To evaluate relationship between Endurance training in addition starting point...