12 Questions
What are the potential contributors to fatigue according to applied neurophysiology?
Decrease in the ability of muscle fibers to generate force, Decrease in the efficiency of neuromuscular synapses, Changes in the captivity of certain peripheral receptors, Changes in the patterns of firing of alpha-motoneurons, Psychological factors, Changes at any level of the hypothetical process if the generation of a motor command
What are the fatigue-induced changes within a muscle?
Slowing of conduction velocity of muscle action potentials, Alteration of the excitation threshold to external stimulation, Slowing of the relaxation phase of a twitch contraction, Posttetanic depression of twitch force
How does fatigue affect muscle reflexes?
Suppression of short latency reflexes (M1), Less pronounced depression of medium-latency reflexes (M2), No changes or even facilitation of long-latency reflexes (M3)
What are the fatigue-induced changes in EMG spectrum?
Changes in the firing of the individual motor units (spectral changes, synchronization)
What are the potential psychological factors contributing to fatigue?
Motivation
How does fatigue impact the level of muscle activation?
Fatigue-induced changes in muscle activity, Fatigue-induced changes in the level of muscle activation
Fatigue can lead to a decrease in the ability of muscle fibers to generate ______
force
Changes in the captivity of certain peripheral receptors lead to changes in their reflex effects due to fatigue-induced changes in ______
muscle
Fatigue-induced changes in muscle reflexes may result in the suppression of short latency ______
reflexes
Slowing of the relaxation phase of a twitch contraction is one of the fatigue-induced changes within a ______
muscle
Fatigue-induced changes in the level of muscle activation can be influenced by changes in muscle response to ______
stretch
Fatigue can lead to changes in the firing of the individual Motor units, including spectral changes and synchronization of ______
units
Explore the potential contributors to fatigue from a neurophysiological perspective, including changes in muscle fiber ability, neuromuscular synapses efficiency, and alpha-motoneuron firing patterns. Learn about how psychological factors such as motivation can also impact fatigue.
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