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CSCS Practice Test
Exercise Sciences
CSCS
Exercise Sciences Practice Test
Question 1 of 3
90% Get this Question Right
Fast-twitch muscle fibers are Type _______________ fibers.
A
IIa and IIb
B
I
C
Ia and Ib
Fast-twitch fiber is Type II (a and b) muscle fibers. Type IIb fibers are characterized by high force/power/speed production and low endurance, while Type IIa fall in between high endurance slow twitch Type I fibers and Type IIb fibers.
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