Kinesiology 2230A/B Lecture Notes - Lecture 7: Glycogen, Acetyl-Coa, Catecholamine

• School: Western University
• Department: Kinesiology
• Course: Kinesiology 2230A/B
• Professor: Glen Belfry

Document Summary

Further away from the earth, there is less air pressure increase breathing rate. Effects of altitude importance of fitness and pace. Glycogen stores 2,000 kcals; fat stores 73,000 kcals. At some point the glucose and fas will be giving us acetyl coa which leads to citrate. In longer exercises, glucose/glycogen is conserved because we don"t have much of it; metabolic pathways begin to conserve carbohydrates. If we inhibit pfk, the reaction of phosphofructokinase slows, g6p will accumulate, that inhibits the breakdown of glucose in the presence of hexokinase (hk) Hexokinase is what changes glucose to g6p. Can use fa to give us the energy we require. There"s always going to be a little bit of cho being used- the pathway never stops, it only slows down, you always need substrate (glucose flux) When glucose/glycogen depleted fatigued, can"t run on just fat, conservation of cho important. As exercise intensity gradually increases, increased hormonal stimulation (catecholamine release) activates.