Energy Systems Exam Study Guide.
Cause of Fatigue - ATP-PC System - AnswerFuel Depletion (PC) occurs after approximately
10 seconds
Cause of Fatigue - Anaerobic Glycolysis - AnswerAccumulation of Hydrogen ions (H+ ions)
in muscles as a result of incomplete breakdown of fuel (glycogen)
Causes o...
Cause of Fatigue - ATP-PC System - Answer✔Fuel Depletion (PC) occurs after approximately
10 seconds
Cause of Fatigue - Anaerobic Glycolysis - Answer✔Accumulation of Hydrogen ions (H+ ions)
in muscles as a result of incomplete breakdown of fuel (glycogen)
Causes of Fatigue - Aerobic System - Answer✔Fuel Depletion (Glycogen) occurs after
approximately 90 minutes/2 hours; Dehydration; Elevated Body Temperature; Redistribution of
Blood Flow
Recovery - ATP-PC System - Answer✔ATP-PC recovery = Passive rest (30 seconds = 70%
replenishment, 3 minutes = 100% replenishment) *PROBLEM: Hard to rest in a lot of events
Recovery - Anaerobic Glycolysis - Answer✔Active recovery needs to be completed. If possible
to perform a 30 minute recovery at an intensity around 40% MHR
Sporting Examples where "Power of energy systems" is important - Answer✔Anaerobic Events -
Field events, sprint events (100m, 200m, 400m), swim events (50m, 100m, 200m)
Sporting Examples where "Capacity of energy systems" is important - Answer✔Endurance
Events - Triathlons, Marathons; Team Sports - Footy, netball, basketball, soccer, hockey
Energy Substrate - Answer✔level phosphorylation is a type of chemical reaction that results in
the formation of adenosine triphosphate (ATP) by the direct transfer of a phosphate group to
adenosine diphosphate (ADP) from a reactive intermediate.
Duration - Answer✔Amount of time an activity/effort/event goes for (secs/mins/hours)
Inorganic Phosphate (Pi) - Answer✔Is the single phosphate molecule that is broken off during
the breakdown of ATP to ADP + Pi. The last molecule of phosphate has a high energy bond and
when it is broken it releases energy and the inorganic phosphate is left floating around. The
Inorganic phosphate is what is bonded with the ADP to resynthesise ATP.
Yield - Answer✔Refers to the total amount of ATP (mmol or mol) that is resynthesised during
an exercise bout
Rate - Answer✔is the speed (mol/min) at which the fuel is broken down. ranging from Slow to
Explosive.
Pyruvic Acid - Answer✔Also known as pyruvate, made from glucose through glycolysis.
Produces energy in the Krebs cycle. Requires oxygen.
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