Podcast
Questions and Answers
What are the possible sites of peripheral fatigue?
What are the possible sites of peripheral fatigue?
- Motoneurons, brain, sarcoplasmic reticulum
- Brain, spinal cord, neuromuscular junction
- Central fatigue, spinal cord, muscle fiber
- Motoneurons, neuromuscular junction, muscle fiber (correct)
What does fatigue lead to in terms of crossbridge function?
What does fatigue lead to in terms of crossbridge function?
- Reduction in the number of crossbridges only
- Increase in the number of crossbridges, force per crossbridge, and/or the rate of crossbridge activation and deactivation
- Reduction in the number of crossbridges, force per crossbridge, and/or the rate of crossbridge activation and deactivation (correct)
- No effect on the number of crossbridges, force per crossbridge, and/or the rate of crossbridge activation and deactivation
Which side of the force-velocity and power-velocity relationships is more affected by fatigue?
Which side of the force-velocity and power-velocity relationships is more affected by fatigue?
- None of the sides are affected by fatigue
- Eccentric side
- Concentric side (correct)
- Isometric side
What is the effect of fatigue on ISOmax and Vmax?
What is the effect of fatigue on ISOmax and Vmax?
What is a possible cause of central fatigue during a 400 m race?
What is a possible cause of central fatigue during a 400 m race?
What contributes to motor unit 'drop-off' during fatigue at MVC?
What contributes to motor unit 'drop-off' during fatigue at MVC?
What is the role of pain/discomfort in motor unit activation?
What is the role of pain/discomfort in motor unit activation?
What is a possible cause of decreased membrane excitability at the motoneuron level?
What is a possible cause of decreased membrane excitability at the motoneuron level?
What is a possible cause of peripheral fatigue during a 42 km race?
What is a possible cause of peripheral fatigue during a 42 km race?
What does the Interpolated Twitch Technique demonstrate?
What does the Interpolated Twitch Technique demonstrate?
What can overcome some central fatigue?
What can overcome some central fatigue?
What is the effect of pain/discomfort on motor unit activation?
What is the effect of pain/discomfort on motor unit activation?
What is the effect of hypoglycemia on cognitive ability?
What is the effect of hypoglycemia on cognitive ability?
What is a possible cause of peripheral fatigue during a 400 m race?
What is a possible cause of peripheral fatigue during a 400 m race?
What is the effect of pain/discomfort on motor unit firing rates?
What is the effect of pain/discomfort on motor unit firing rates?
