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Differential effect of aerobic exercise training on cardiovagal baroreflex and carotid arterial compliance
Author(s) -
Komine Hidehiko,
Sugawara Jun,
Hayashi Koichiro,
Yoshizawa Mutsuko,
Yokoi Takashi
Publication year - 2008
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fasebj.22.1_supplement.957.11
Subject(s) - baroreflex , medicine , cardiology , blood pressure , heart rate , compliance (psychology) , valsalva maneuver , aerobic exercise , anesthesia , psychology , social psychology
The purpose of this study was to examine the hypothesis that short term aerobic exercise training increase cardiovagal baroreflex sensitivity without altering compliance of the barosensitive carotid artery. To examine this hypothesis, we estimated cardiovagal baroreflex sensitivity and carotid arterial compliance in elderly subjects before and after 2 weeks of exercise training. The training was walk/jog for a period of 30–45 min/day (3–5 days/week) at an intensity of 65–75% of their individual maximum heart rate. Cardiovagal baroreflex sensitivity was assessed by beat‐to‐beat analysis of arterial blood pressure and heart rate during phase ? of Valsalva maneuver. Carotid arterial compliance was determined from systolic and diastolic carotid arterial diameter measured by ultrasound imaging and determined from carotid arterial blood pressure obtained using applanation tonometory. After 2 weeks of exercise training, arterial baroreflex sensitivity increased but arterial compliance did not change. These results suggest that the change in cardiovagal sensitivity caused by short‐term aerobic exercise training does not always depend on the alteration of compliance of the barosensitive carotid artery.