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Biological Aging Is Seriously Postponed By Aerobic Fitness
By maintaining aerobic fitness through middle age and beyond, people
can delay biologican aging up to 12 years and prolong an independent
lifestyle during old age, according to an analysis published on April
10, 2008 in the British Journal of Sports Medicine,
a BMJ Specialty Journal.
Aerobic exercise improves oxygen consumption in the body as well as its
use in generating energy, known as metabolism. Examples of aerobic
exercise include jogging, and biking. However, one's maximum aerobic
power starts to fall predictably beginning in middle age, decreasing
about 5mL/kg/min every decade of life. In a typical sedentary man, by
the age of 60 years, the maximal aerobic power will have dropped to
about 25 mL/kg/min -- this is almost half what it was at age 20. When
this ability drops below 18 (in men) or 15 (in women) mL/kg/min, it
becomes very difficult to perform daily tasks without severe fatigue.
However, according to evidence shown in this article, regular aerobic
exercise can inhibit or even reverse this continuous decline, even
later in life. This article combines data from many different sources
to conclude that by increasing aerobic capacity, someone's biological
aging can be slowed. Specifically, research shows that high intensity
aerobic exercise over a long period boosted maximum aerobic power by
25%. This corresponds to a gain of 6mL/kg/min, or by extrapolation,
10-12 biological years.
The author indicates that this is hopeful news for elderly people.
"There seems good evidence that the conservation of maximal oxygen
intake increases the likelihood that the healthy elderly person will
retain functional independence." Other potential positive effects could
be the reduced risk of serious disease, a shorter recovery time after
injury or illness, and the reduced risk of falls thanks to maintenance
of muscle power, balance, and coordination.
Maximal oxygen intake and independence in old age
R J Shephard
Br J Sports Med 2008;0:1-5.
doi:10.1136/bjsm.2007.044800
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Written by Anna Sophia McKenney
Copyright: Start Sanatate
Not to be reproduced without permission of Start Sanatate
Biological Aging este grav amânã cu aerobic fitness - Biological Aging Is Seriously Postponed By Aerobic Fitness - articole medicale engleza - startsanatate