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E-11
What Is Blood Pressure?
Blood pressure is the force exerted by blood against the walls of the
arteries. Systolic pressure occurs when the heart contracts; diastolic
pressure occurs when the heart expands. Blood pressure is measured
in millimeters of mercury (mmHg).
What Affects Blood Pressure?
Blood pressure is affected by many factors: age, weight, time of day,
activity level, climate, altitude and season. Certain activities can
significantly alter one’s blood pressure. Walking will likely raise
an individual’s blood pressure. Sleeping will likely decrease blood
pressure. Not relaxing for several moments before measurements
can influence readings as well.
In addition to these factors, beverages containing caffeine or alcohol,
certain medications, emotional stress and even tightfitting clothes
can make a difference in the readings.
What Causes Variations In Blood Pressure?
An individual’s blood pressure varies greatly from day to day and
season to season. For hypersensitive individuals, these variations are
even more pronounced. Normally, blood pressure rises during work
or play and falls to its lowest levels during sleep.
ABOUT BLOOD PRESSURE