1. Discuss the relationship between distribution of muscle fiber type and performance. How might exercise training modify or change a person’s fiber-type distribution? Muscle fibers can be categorized into two main properties, twitch and metabolic properties. The twitch properties consist of slow and fast twitch and metabolic properties consist of oxidative, oxidative/glycolytic and glycolytic (Beardsley, 2017). Slow twitch and fast twitch muscles fibers are found in all muscles, but one may be more dominate than the other. The distribution of either slow twitch or fast twitch will very from muscle to muscle depending on the individual (Beardsley, 2017). Type 1 muscles are the slow twitch fibers that are known as oxidative because they are produce ATP using oxygen. Type 1 muscle fibers do not fatigue quickly and are the muscle fibers that are used by long distance runners. Type 2 muscles include two subgroups, type 2a and type 2b (Muscle Fibers Explained, 2014). Type 2a muscle …show more content…
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4. What are two advantages of fat over carbohydrate for fuel storage in the body? Two advantages of fat over carbohydrates for fuel storage in the body would be that fat provides more than twice the kilocalories and they do not have a storage limit (Flatt, 1995). Glucose and carbohydrates are more readily available, but they are not good to rely on for a primary source of energy. Fat tissue has a greater amount of energy per gram that is stored, and fat tissue takes up less space than glycogen.
References:
Flatt J. Use and storage of carbohydrate and fat. The American Journal Of Clinical Nutrition [serial online]. April 1995;61(4 Suppl):952S-959S. Available from: MEDLINE Complete, Ipswich, MA. Accessed December 24,