interplay of energy systems Flashcards
High-intensity short duration
200 m sprint
At the beginning of the 200m race, all energy systems contribute to energy production, however, their contribution will vary depending on intensity and duration.
The ATP-PC system produces energy at an explosive rate (3.6 mol/min) due to the simple anaerobic chemical reactions that take place, and therefore resythensing ATP rapidly, allowing the athlete to reach max intensity and power to explode out the starting blocks. AS THE ATHLETE explodes out the blocks the ATP-PC system will have the greatest contribution of energy until PC depletion occurs due to its limited yield of 0.7 mol/min, and finite capacity of PC.
Secondly, the anaerobic glycolysis system increases its contribution as PC begins to deplete, and allows the athlete to continue working at high intensity’s running at high speeds, due to the fast rate of ATP resynthesis (1.6 mol/min)
Lastly, the aerobic energy system contribution increases throughout the event, however due to the limited duration of the 200 m sprint, the aerobic energy system will never be the greatest supplier of energy.
In conclusion, the energy system with the greatest contribution of energy systems throughout the 200m event is the ATP-PC system, due to the short duration of 19.9 seconds.
Low intensity, long duration
At the beginning of the Iron man, all energy systems contribute to energy production, however, their contribution will vary depending on intensity and duration.
The ATP-PC system will have the greatest energy contribution when #brydie# moves from rest to begin the iron-man, and will supply energy at a fast rate of 3.6 mol/min allowing brydie to explode from the starting line. However, due to the limited yield of the PC system (0.7 ATP per molecule) and a limited supply of PC, pc depletion will occur and the ATP-PC system will decrease its supply of energy. s there is no passive rest, PC will have no opportunity to replenish.
The Anaerobic glycolysis system will increase it’s contribution as PC depletion occurs, and will allow brydie to continue running/swimming at high intensity’s due to its fast rate (1.6 mol/min) however, due to its small yield (2-3 for every molecule) of producing energy anaerobically, as sufficient oxygen is available will decrease its contribution. However, throughout the event such as a surge up a hill or a surge to the line, the AGS system will increase its energy contribution allowing to perform at high intensties.
Lastly, the aerobic system increases its’ contribution once sufficient oxygen is available, and will remain the greatest supplier of energy for the remainder of the event, due to its large yield, allowing to sustain activity for extended periods.
In conclusion the energy system with the greatest contribution throughout the ironman is the aerobic system due to its long duration of 8 hours
formula
Generic statement- "At the beginning of the 200m race, all energy systems contribute to energy production, however, their contribution will vary depending on intensity and duration" ATP-PC AGS Aerobic In conclusion
talk about rate/yeield and also fatique
