Fatigue

Question 1

Insufficiencies to which of the following areas would be an example of peripheral fatigue?

Answer 1

neuromuscular junction

Question 2

Asmussen (1979) performed a study in which repeated finger contractions were performed with the eyes closed, until fatigue became obvious. Asmussen demonstrated that once fatigued, having the subjects open their eyes resulted in an immediate recovery. This experiment is evidence of ___________.

Answer 2

central fatigue

Question 3

Which of the following is NOT a primary contributor to peripheral fatigue?

Answer 3

decreased motor neuron activation

Question 4

Which of the following is not a result of fatigue from submaximal contractions?

Answer 4

an increase in EMG frequency

Question 5

Through which of the following mechanisms will very-high threshold motor units be recruited?

Answer 5

During high-intensity loads only

Question 6

Which of the following statements are true regarding changes in afferent feedback during fatigue?

Answer 6

the discharge rate of muscle spindle endings decrease

Question 7

Which of the following statements is not true?

Answer 7

an increase in force from cortical stimulation after fatigue demonstrates evidence of peripheral fatigue