Intense exercise that results in a great deal of anaerobic activity
A. increases muscular strength and mass.
B. decreases muscle strength and mass.
C. converts some slow-twitch fibers into fast-twitch fibers.
D. enlarges slow-twitch fibers.
E. decreases the efficiency of fast-twitch fibers.
Answer: A
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Fill in the blank(s) with the appropriate word(s).
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