Heart Rate Variability and the Exercise Pressor Reflex during Dynamic Handgrip Exercise and Postexercise Arterial Occlusion

The sustained elevation in MAP during postexercise arterial occlusion suggests metabo-receptor-mediated heightened sympathetic activity. The increase in LFnu during exercise and its subsequent recovery during postexercise occlusion is consistent with dynamic exercise-induced parasympathetic with-drawal but a strong vagal activation upon cessation of dynamic activity despite persistent sympathetic activity originating from afferent input from the occluded forearm.