CSCS Daily Practice Question #69
SCENARIO: During a maximal isometric contraction, an athlete's quad generates peak force. If the motor neurons supplying the quadriceps could increase their firing frequency by 50%, what change in force output would you expect?
A. Force would remain unchanged because maximum crossbridge overlap has already been achieved
B. Force would decrease because faster firing rates cause muscle fatigue
C. Force would increase significantly due to summation of successive twitches and greater crossbridge cycling
Answer in the poll, then explain your rationale below in the comments! I'll follow up with my breakdown of the question after enough people have responded.
From Chapter 1: Structure and Function of Body Systems
DCO Code: 1.B2
A. Force would remain unchanged because maximum crossbridge overlap has already been achieved
B. Force would decrease because faster firing rates cause muscle fatigue
C. Force would increase significantly due to summation of successive twitches and greater crossbridge cycling
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CSCS Daily Practice Question #69
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