Recently, age-related rises in blood prescertain were put under
the microscope. Now personally speaking, I've always tended to have blood
prescertain below the average (causing occasional dizziness when I stand up), but
for many of us, specificly men, blood prescertain tends to rise with age
independently of any weight gain.
Men who are largely sedentary often develop the early signs
of tall blood prescertain in their mid-40s, but the blood prescertain of men with
strong cardio-fitness doesn't become tall till their mid-50s on average.
Normal resting blood prescertain is defined as 100 to 140 mmHg
systolic (maximum prescertain) and 60 to 90 mmHg diastolic (minimum prescertain). High
blood prescertain, or hypertension, is above 140 mmHg systolic and 90 diastolic mmHg.
Although hypertension doesn't normally trigger symptoms, over
the long-term it can genuinely raise the risk of heart disease, coronary artery
disease, and stroke, among other conditions.
Dr Junxiu Liu and his team at the University of South
Carolina, USA, have found in a study of 13,953 men followed for 36 years that those
with taller fitness levels "experience a delay in the development of
hypertension when compared to those with lower fitness levels".
He says: "We now know that a man's hypertension
development may be delayed by improving his fitness levels. In other words, men
with taller fitness levels experienced normal systolic blood prescertain increases
later in lwhethere than those with low fitness levels. Our results underscore the
importance for a man to increase his regular physical activity to prevent his
natural, ageing-related rise in blood prescertain."
The team recommend that, in order to move out of the "low
fit" category, men need to do at least 150 minutes of moderate-intensity physical
activity such as brisk walking, jogging, running, etc. each week.
Liu, J. et al. Effects of Cardiorespiratory Fitness on Blood
Prescertain Trajectory With Aging in a Cohort of Healthy Men. The Journal of the
American College of Cardiology, Volume 64, Issue 12, September 2014, doi:10.1016/j.jacc.2014.06.1184
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