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Sports Nutrition 424: Quiz 3
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NUTRITION 424 QUIZ 3Q: Compare and contrast the (a) force production, (b) force
production speed, and (e) oxygen consumption of fast twitch versus
slow twitch muscle fibers.
A: Fast twitch muscle fibers are high in force production, quick in
force production speed, and low in oxygen consumption. These muscle
fibers are used for putting out a lot of quick force in a short time,
these muscle fibers are larger and are more prone to fatigue quickly
meaning these muscle fibers are used more when strength and power,
are needed. An example would be powerlifting. Slow witch muscle
fibers are low in force production, slow in force production speed.
and are high in oxygen consumption.
Due to their high levels of oxygen consumption, these muscles are
used more during things like running a marathon. Since these muscle
fibers are usually smaller and slower to fatigue, they are used when
endurance is needed.
Q: Creatine phosphate is the preferred energy system during
○ sustained, repeated sprints
○ long-distance running
○ short, fast sprints
○ dance aerobics
Q: Oxidative phosphorylation is the predominant energy system used at
rest.
True/False
Q: Anaerobic glycolysis is the preferred energy system during
○ sustained, repeated sprints
○ long-distance running
○ short, fast sprints
○ dance aerobics
Q: Long-distance running would depend primarily on the creatine
phosphate system as a source of ATP.
True/False
Q: Oxidative phosphorylation is the preferred energy system during
○ sustained, repeated sprints
○ very heavy weight lifting
○ short, fast sprints
○ dance aerobics
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