Flashcards
Muscle fatuige
Cards in this deck (9)
- 1Define FatuigeFailure to maintain (or repeatedly) generate the required or expected force.
- 2Define weaknessfailure to generate the required or expected force on first testing or attempting a performance.
- 3Give some sites of muscle fatigue. Break them into central and peripheralCentral: Excitatory input to the motor cortex, Excitatory drive to the lower motor neuron, motor neuron excitability. Peripheral: Neuromuscular transmission, Sarcolemma excitability, Contractile mechanism, Metabolic energy supply.
- 4If we see an M wave during a muscle contraction, what sites of fatigue can we rule out?Neuromuscular transmission, nerve and muscle membrain.
- 5What do reactive oxygen species do when in our muscles?They inhibit the Na+/K+ pump, therefore fatigue happens earlier.
- 6M wave failure is seen when we give _____ stimulation.prolonged
- 7In a maximal contraction, the M wave _____ despite decreasing electrical stimulation.Is maintained
- 8How can we increase the time muscles are able to fire for by chancing muscle firing rate.Decreased the firing rate to muscles.
- 9Give a possible cause of central fatigue. Give some evidence for this.Elevated core temperature. in Hyperthermic participants we see increases EMG but doesn't change performance in maximal sustained vol contraction. Maybe the muscle needs more stimulation for contraction to fuse at higher temperatures.
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- Exersice Physiology Flashcards on Muscle fatuige, created by alexlpeart on 16/05/2013.
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