The increase in the maximal arterial-mixed venous oxygen difference (a-v O 2 difference) with aerobic training...

The increase in the maximal arterial-mixed venous oxygen difference (a-v O ₂ difference) with aerobic training is due to all of the following except:

		an increase in mitochondria in the muscle.
		an increase in capillaries in the muscle.
		an increase in hemoglobin.
		increase in muscle blood flow.

Expert Solution

Correct option is (iii). Increases in hemoglobin.

This statement is false because Aerobic exercise/ training results in decrease in haemoglobin due to increase in plasma volume. Increase in the maximal arterial-mixed venous oxygen difference (a-v O 2 difference) with aerobic training is due to an increase in mitochondria in the muscle.Aerobic training results increase in the size and density of mitochondria. This allows each mitochondrion to extract more oxygen from the blood .Increases in capillaries in the muscles causes greater blood supply and therefore greater oxygen diffusion.

So correct option is (iii)

gladiator answered 2 years ago

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