MSNA was directly recorded from the peroneal nerve (leg) using microneurography (662C-4 Nerve Traffic Analysis System, The University of Iowa, Iowa City, IA, USA), according to well established methods (20,22). Muscle sympathetic bursts (bursts per min), and bursts per 100 heartbeats, were identified by visual inspection conducted by a single investigator, blind to the status of study participants (control vs exercise-trained).
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