Kinesiology 3339A/B Lecture 8: Catabolism, Metabolism, Resting Energy Expenditure, & Thermic Effect of Food

• School: Western University
• Department: Kinesiology
• Course: Kinesiology 3339A/B
• Professor: Peter Lemon

Document Summary

Pathway used depends on rate of atp needed (determined by exercise intensity) Phosphagen stores: greatest rate but stores limited to a few seconds. Anaerobic glycolysis: next greatest rate but limited to a few minutes maximum by lactic acid accumulation. Oxidative phosphorylation: very long duration but slowest rate; limited by oxygen delivery (vo2 max) and fuel supply (cho, fat) Go from resting to peak power output, see peek then drops off then a plateau near the end. this reflects energy you"re using. stored atp first then anaerobic, then at the end relying more on oxidative phosphorylation. Metabolism: all physical and chemical transformations in the body (anabolism + catabolism) Anabolic, eg. , synthesis (build-up) during growth or training (overload leads to increased skeletal muscle mass and strength with strength training or increased muscle oxidative enzymes with endurance training) Catabolic, eg. , formation of atp from phosphagens or .