Muscle fiber type and performance
The body majorly has two types of muscles, the slow-twitch and fast-twitch muscle fibers. Most people have, on estimation, 50% slow-twitch fibers and 50% fast-twitch ones. This however can significantly change depending on the type of training an athlete goes through. The slow-twitch muscles come into play for the endurance athletes hence they will develop more of this type over time with training. Fast-twitch muscle fibers are way better for activities that need short periods of intense activity such as among sprinters hence such athletes will develop more of this over time (Rivera H., 2018).
Breakdown of glycogen
Glycogen Phosphorylase catalyzes breakdown of glycogen into Glucose-1-Phosphate (G1P). The reaction that produces G1P from the glycogen in the body is referred to as phosphorolysis. Phosphorolysis reaction use phosphate to breakdown bigger molecules into smaller ones. The process of breaking down of the glycogen into glucose is referred to as glycogenolysis. This process takes place in the cells of the muscles and in the liver tissues as a response to neural and hormonal signals. Glycogenolysis plays a significant role in the flight-or-fight responses that are adrenaline induced as well as the regulation of glucose...
References
Bazenilla F., (2002). The Nerve Impulse. Retrieved February 25, 2017 from http://nerve.bsd.uchicago.edu/TheNerveImpulse05.pdf
Hamilton A., (2018). Fat as Fuel. February 25, 2017 from https://www.peakendurancesport.com/nutrition-for-endurance-athletes/supplements/fat-as-fuel/
National Center for Biotechnology Information, (2018). Glycogen Breakdown Requires the Interplay of Several Enzymes. February 25, 2017 from https://www.ncbi.nlm.nih.gov/books/NBK22467/
Rivera H., (2018). Muscle Fiber Types and How They Relate To Your Training Program. February 25, 2017 from http://www.hugorivera.net/muscle-fibers-trainin.html
Virtual Medical Centre, (2018). Blood Function and Composition. February 25, 2017 from https://www.myvmc.com/anatomy/blood-function-and-composition/
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