Autonomic nervous system influence on arterial baroreflex control of heart rate during exercise in humans.


A combination of sympathoexcitation and vagal withdrawal increases heart rate (HR) during exercise, however, their specific contribution to arterial baroreflex sensitivity remains unclear. Eight subjects performed 25 min bouts of exercise at a HR of 90, 120, and 150 beats min-1, respectively, with and without metoprolol (0.16 +/- 0.01 mg kg(-1); mean +/- S… (More)


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