Yasuharu Tabara of Ehime University School of Medicine in Ehime, Japan,
noted that high blood pressure during the night can increase the risk of
a night time heart attack, reports Patient Health International.
In the research, more than 270 healthy men ages 19 to 64 who were not
taking blood pressure medication wore automatic blood pressure cuffs.
They were first asked to lie down face up and later were told to turn
over on their stomachs.
In almost all the men, their overall blood pressure dropped
significantly when they were face down. And 25 of the men experienced an
even more dramatic decrease of more than 15 points when they just turned
over onto their stomachs.
In addition, systolic blood pressure, which is the force blood exerts on
the artery walls when the heart beats, fell by as much as 15 mmHg in
response to moving into the prone position, compared with the supine
position, reports Patient Health International.
"These findings indicate that sleeping position could influence blood
pressure," the researchers said. "Marked change in blood pressure during
sleep by turning the position may need to be further studied as a
possible cause of the cardiovascular events during the sleep."
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