Regular aerobic exercise in middle age increases the chances of survival of stroke in old age: Research

Scientists claim that Regular exercise in middle age increases the chances of survival and also reduces the severity of tissue damage if a stroke occurs old age. They found that regular aerobic exercise in 40's helps to maintain collateral blood vessels of the brain similar to the condition of 16 years old, by the age of 70 years.


Regular aerobic exercise in middle age increases the chances of survival of stroke in old age: Research

Collaterals are small blood vessels that run alongside main coronary arteries. During the stroke, the coronary arteries, which are concerned with blood flow narrow thereby minimizing the supply of blood. The blood will be rerouted by collateral blood vessels and further limits the tissue damage. However collateral blood vessels shrink with the age of the brain and their size and number vary from person to person.

Researchers from the North Carolina have now found that this loss of collateral vessels with age can be prevented by aerobic exercise in middle age. They further said that extent of brain damage after stroke and recovery treatments depend more on the collateral circulation.
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Research Methodology


-Researchers observed the abundance of collateral blood vessels in exercising and non-exercising mice in different age groups.
-Mice that started exercising at 12 months old has the same abundance of collateral blood vessels as in three months age even after mice was 25 months old
-In humans this is equivalent to starting exercise at the age of 40 years (12-month-old mice) and at 70 years (25-month-old mice) they have the same abundance of collateral blood vessels as of when they have during age of 16 years (three months old mice)
-When the mice 0f 25 months old suffered stroke there was minimum damage and their brains are in a good condition similar to three months old mice.
-On the other hand, non-exercising, 25-month-old mice have fewer collateral blood vessels of smaller diameter.
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Researchers conclude that regular aerobic exercise may not only protect collateral blood vessels but also minimize the severity of stroke in old age.

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