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NFPT Ch.2 Part 2

The Cell Fiber

QuestionAnswer
Mitochondria Stores and creates cellular energy. (ATP)
Myofibrils The contractile components made up of Actin and Myosin.
Mitochondrial Failure Contractile failure occurs as a result of depleted energy stores and a large build up lactic acid. Training in the 20-25 rep range in theory will help build increased storage for energy and new mitochondira. (Red Slow Twitch motor units)
Intermediate Failure Contractile failure occurring at, or about the same time the short term energy stores are depleted. Training in the 12-15 rep range, in theory will help build new mitochondria and Myofibrils. (Red Fast twitch motor units)
Myofibril Failure resistance is so great, the contractile components fail. Immediate energy stores rapidly deplete. Training in the 4-6 rep range affects the Myofibrils the most. (White Twitch motor units.)
Created by: laceymp
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