Question

Which of the following is not a phenotypic adaptation in skeletal muscle after endurance training? a....

Which of the following is not a phenotypic adaptation in skeletal muscle after endurance training?

a. creation of new capillaries

b. transformation from glycolytic to oxidation fiber types

c. ability to mobilize protein as a substrate

d. greater number of mitochondria

Science   Anatomy-And-Physiology   
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Answer #1

Answer is - C ability to mobilize protein as a substrate.

Explanation -a. Exercise increases the blood requirement in muscles. Therefore it grows more capillaries and expands the network.Muscle cell elevates the level of enzymes and uses more oxygen to generate more energy.

b.Endurance training transforms the glycolytic to oxidative in fast twitch fiber types ,from IIb/IId/X to IIa fibre type .

d.Endurance training demands high energy to utilized by the muscle cells ,therefore number of mitochondria increases to accelerate the energu production.

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