About Blood Pressure; What Is Blood Pressure - LifeSource UB-328 Instruction Manual

ABOUT BLOOD PRESSURE

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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; dia-
stolic 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 blood pressure. Walking can raise systolic pres-
sure by 12 mmHg and diastolic pressure by 5.5 mmHg. Sleeping
can decrease systolic blood pressure by as much as 10 mmHg.
Taking your blood pressure repeatedly without waiting an interval
of 5 to 10 minutes between readings, or without raising your arm
to allow blood to flow back to the heart, can also affect it.
In addition to these factors, diet beverages containing caffeine or
alcohol, certain medications, emotional stress and even tight-fit-
ting 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. In hypersensitive individuals, these variations
are even more pronounced. Normally, blood pressure rises during
work or play and falls to its lowest levels during sleep.
Fluctuation within a day (case: 35 year old male)
200
150
100
50
0
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LifeSource Health Line (Toll-Free): 1-888-726-9966
Systolic Blood
Pressure
Diastolic Blood
Pressure