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8 Cards in this Set
- Front
- Back
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What pathway do fast twitch fibers rely on? What are these pathways?
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creatinine phosphate and fermentation, anaerobic means of supply ATP to muscles
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What are fast-twitch fibers designed for?
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strength
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Why are fast-twitch lighter? (3)
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fewer mitochondria, adn little or no myoglobin, and fewer blood vessels
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In aerobic activity, when will slow twitch fibers tire?
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only when their fuel supply is gone
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What has more mitochondria, fast or slow-twitch fibers?
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slow-twitch
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Why are slow-twitch darker in color?
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because they contain myoglobin, and have dense capillary beds because they draw blood and o2 than fast-twitch fibers
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What is muscle soreness called?
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Delayed onset muscle soreness (DOMS)
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What is muscle soreness especially associated with? examples?
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Any activity that causes muscles to contract while they are lengthening, walking down stairs, running downhill, lowering weights, and downward motion of squats and push-yups
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