Influence of chronic activity
8 important questions on Influence of chronic activity
An elite marathon runner has >80% type 1 muscle fiber. What can you say about nature or training?
How does a motorneuron determine the properties of the innervated muscle fiber?
How could be electrically stimulate a slow muscle fiber to become a fast muscle fiber?
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What are the major changes in muscle fibers seen after chronic low frequency stimulation?
- increase in vascularization
- increase in mitochondrial density
- decrease in sarcoplasmic reticulum
- decrease in Ca2+ ATPase
Which changes in muscle fiber property are first detected after chronic low frequency stimulation?
What happens to the force-frequency relationship of a fast to slow muscle fiber?
Can endurance training elicit the same adaptive responses in muscle as electrical stimulation of animals?
What molecular mechanisms are involved in the increased resistance against fatigue found in endurance athletes?
- increased vascularization (VEGF)
- increased mitochondrial density (HIF-1, VEGF and OMG... no just kidding HSPs!, ADP:ATP ratio)
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