Kinesiology 2230A/B Lecture Notes - Creatine Kinase, Phosphofructokinase, Metabolic Pathway

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

Document Summary

Soccer is only 10% anaerobic; usually 80% walking/jogging around; so most of the time they are recovering from the short during of high intensity movements; need to be aerobically fit. However, the average hr is high (170) Regulatory enzymes = slowest activity enzymes (phosphosfructokinase) The point in a metabolic pathway where ultimate control (slowest reaction) is exerted. Change of free energy will be negative (releasing energy); we are losing energy in that particular reaction. Power perspective: phosphocreatine system will be active for a short duration (atp being broken down). This system is used when there a maximum effort given for a short duration that is very explosive. After reaching 10 seconds, phosphocreatine system will be depleted; as we use pcr to maintain the energy levels, that"s when the glycolytic pathway happens (breaking down carbohydrates to give energy; and eventually that becomes depleted. Atp is the high energy compound used to fuel exercise.