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Full Length
Research Paper
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The effects of carotid baroreceptor stimulation on blood
pressure variability in young male athletes and non-athletes
Ali Arasteh1*, Maliheh Hamzehzadeh Azar2,
Saeed Khamnei3 and Yousef Mehmannavaz4
1Department
of Physiology, Maragheh Branch, Islamic Azad University,
Maragheh, Iran.
2Department
of Nursing, Maragheh Branch, Islamic Azad University,
Maragheh, Iran.
3Department
of Physiology, Tabriz University of Medical Sciences,
Tabriz, Iran.
4Department
of Animal Science, Maragheh Branch, Islamic Azad University,
Maragheh, Iran.
*Corresponding author. E-mail:
arasteh_cns@yahoo.com
Abbreviations:
SBP, systolic blood pressure; DBP, diastolic
blood pressure; PBP, pulse blood pressure; MABP,
mean arterial blood pressure; HR, heart rate; BR,
baroreceptors.
Accepted 5 May, 2011 |
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Abstract |
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The purpose of this study was to investigate the
effects of carotid baroreceptor (BR) stimulation
on blood pressure changes in young male
volleyball players and non-athletes. Twenty five
young male volleyball players and twenty-five
young male non-athletes were recruited for
voluntary participation in the present study. A
neck suction device (Ekberg,s model)
was used for stimulation of carotid baroreceptor.
In this study the duration of stimulation was 70
s, and the negative pressure used was -30 mm Hg.
Blood pressures were recorded before, during and
after ending of stimulation of carotid
baroreceptors in sitting position. Indirect
pressure assessment was utilized for data
acquisition. According to the results of this
study, systolic blood pressure (SBP), diastolic
blood pressure (DBP) and pulse blood pressure (PBP)
significantly decreased compared to baseline
levels in two groups (P<0.001). This research
showed that the maximum reduction in SBP and PBP
occurred in the 25th second, while for DBP the
maximum reduction time was seen in the 5th
second during stimulation in two groups. Also,
maximum reduction in mean arterial blood
pressure (MABP) in the group of athlete occurred
in the 5th second, while in the group of
non-athlete, it occurred in the 25th second .Our
data showed a more reduction in SBP as compared
with DBP, which was more evident in control
group, although was not statistically
significant. It is concluded that in athletes
carotid baroreflex becomes more efficient due to
long term physiological adaptations of exercise.
Key words:
Blood pressure, carotid baroreceptor, male athletes. |
