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8 Cards in this Set
- Front
- Back
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Describe the most basic differences between Type I and Type II muscle fibers...
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Type I- slow twitch, small diameter, low glycogen storage, high triglyceride storage,
Type II- fast twitch, (two types, "a" and "b"), high phosphocreatine stores and glycogen stores |
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As aerobic exercise begins, what general responses to we see?
As aerobic exercise progresses what regulates key enzymes (also name those key enzymes) |
1. Cardiac output increased, enhanced lipolysis- muscle uses stored energy (ATP, PCr, glycogen)
2. ADP regulates (glycolytic: PFK, krebs: succinate dehydrogenase) |
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Compare anaerobic exercise with aerobic...
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Anaerobic- short duration, high intensity (usage of type II fibers)
Aerobic- long or short, low intensity (jogging) |
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Describe the neurological and intramuscular fuel store changes in anaerobic training...
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Neuro-
a. more efficient neural recruitment b. increased CNS activation c. Lowering inhibitory protective neural reflexes Muscular- a. Increase storage of ATP, PCr and activities of ATP-PCr increase b. increased glycogen c. same # fibers of muscle d. increased size and type IIb can turn into type IIa (faster) fibers e. overall less dense mitochondria and capillary size |
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Describe the neurological and intramuscular fuel store changes (i.e. adaptations) in aerobic training...
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1. enhance ATP generation through aerobic methods
2. might change type IIa to type IIb 3. Mitochondria # and size increases |
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As aerobic training continues what changes in Fat metabolism do we see?
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improved ability to oxidize TAGs, which allows one to exercise at a higher level before getting tired
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How does aerobic training help improve insulin sensitivity in Diabetes?
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increased GLUT4 translocation due to increased AMPK which is caused by contraction and metabolic stress.
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What affects does resistance training have on...
1. TNF-a 2. mitchondrial dysfunction 3. hip fracture |
1. TNF-a which is associated with muscle wasting is decreased
2. Mitochondrial dysfunctions- with dysfunctions see loss of muscle mass, made muscle stronger 3. less hip fractures |
