Exercise intensity influences cardiac baroreflex function at the onset of isometric exercise in humans

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We sought to examine the influence of exercise intensity on carotid baroreflex (CBR) control of heart rate (HR) and mean arterial pressure (MAP) at the onset of exercise in humans. To accomplish this, eight subjects performed multiple 1-min bouts of isometric handgrip (HG) exercise at 15, 30, 45 and 60% maximal voluntary contraction (MVC), while breathing to a metronome set at eupneic frequency. Neck suction (NS) of -60 Torr was applied for 5 s at end expiration to stimulate the CBR at rest, at the onset of HG (


Original languageEnglish
Pages (from-to)941-7
Number of pages7
JournalJournal of Applied Physiology
Issue number3
Early online date5 Jul 2007
Publication statusPublished - 5 Jul 2007