KINE 4010 Lecture Notes - Lecture 3: Phosphocreatine, Exercise Intensity, Geostationary Operational Environmental Satellite

• School: York University
• Department: Kinesiology & Health Science
• Course: KINE 4010
• Professor: David Hood

Document Summary

Lecture 03: atp-pcr and creatine molecule (p. 11) Showed that the atp used in the reaction to resynthesize phosphocreatine comes from the. Facts about atp and pcr: graph 1: concentration of pcr (as a function of exercise time) Start exercising for a certain amount of time (10 mins) During rest (0 min) phosphocreatine levels are at max (100%) During exercise (10 min) phosphocreatine levels goes down. During recovery (past 10 min) phosphocreatine levels goes up. The drop or usage of phosphocreatine is intensity dependant: mild exercise = phosphocreatine levels go down (a little) Severe exercise = phosphocreatine levels go down (a lot) B/c there is a high atp demand and the atp-pc has to contribute more pc to produce or supply more atp. Run faster and harder use more pcr. All three systems of energy production start at the same time. Summary: the utilization of pcr is very fast but only at the beginning.