Kinesiology 3339A/B Lecture 12: Exercise Nutrition - Lecture 12

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If you re an athlete, you need to understand the importance of cho. Cho is made of carbon, hydrogen and oxygen: you don t need to know the structural formulas, the numbers on the structures = carbons. glucose = 6-carbon molecule which splits up into 2 3-carbon molecules that go through glycolysis (kreb s cycle) and may continue to oxidative phosphorylation. Complex carbohydrates (old terminology: 3 or more sugar molecules (between 3 and 9) = oligosaccharide = small cho. Glycogen/fibre/starches: thousands of glucose molecules = enormous cho, not in just 1 long chain. but a lot of branch points y globular chain in all directions: starches = plants, glycogen = animals, humans can use starches or glycogen for future use as a cho fuel. In muscle and liver = where stored significantly. the rest stored = in glucose in fluids in the blood = small amount y however, all stores eventually go through the blood: ex.

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