Kinesiology 3339A/B Lecture Notes - Lecture 1: Muscle Biopsy, Performance-Enhancing Substance, Glycogen

• School: Western University
• Department: Kinesiology
• Course: Kinesiology 3339A/B
• Professor: Arash Bandegan

Document Summary

Cow"s diet: 20 pounds of meat, 20 pounds of bread and 18 pints of wine daily. With a gradual increase in stress due to carrying weight of the cow every day, the body tries adapting to it and gets stronger as it carries a heavier and heavier cow. How eating carbs will affect performance they tested: high fat-low carb diet, normal diet, high carb-low fat diet. By increasing the carbs from low to normal to high, muscle glycogen increases. More carbs = more muscle glycogen = can go longer before fatigue: time to exhaustion with high carb would be about 3x that of a low carb diet. Ran for 2 hours every day for 3 days. Took a leg muscle biopsy to measure muscle glycogen. High carb diet: 70% muscle glycogen: consistently kept higher glycogen levels, refuel and then it goes back up after work out. Low carb diet: 40% muscle glycogen: don"t refuel carbs so it consistently lowers.