Download Redistribution of blood

Blood Flow During Exercise
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When exercise begins, blood is sent to the working
muscles
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Less blood is therefore available to digest food in the
gut, which can cause cramps
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The flow of blood from other areas into the muscle
is known as blood shunting.
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This is why an exercise session should not start until
2/3 hours after the last meal
Redistribution of blood during exercise
Blood Shunting is where the blood is redistributed when we
start to exercise
● As we exercise, the destination of blood flow changes
dramatically.
● Blood flow can be diverted away from non-essential tissues and
organs and directed to working muscles
● During exercise muscles gain 80-90% of total blood flow
●
Destination
Rest
Maximal exercise
Muscle
20%
80%
Brain
15%
11%
Heart
5%
4%
Skin
10%
3%
Liver & Intestines
30%
1%
Kidneys
20%
1%
● Explain
Vasodilation…
● Explain
Vasoconstriction…
● Therefore
less blood is available to digest
the food, so we must leave 2 hours after a
large meal.
● It could cause cramps if you do exercise
after a meal.