Energy produciton du..

ATP is the molecule that muscles use to create
energy for movement
Anaerobic Alactic Phase 1
Anaerobic Lactic Phase 2
Aerobic Phase 3
All 3 energy phases work to produce ATP for
energy for exercise but do it in different ways and
produce different amounts of ATP
PC = Phospho Creatine
ADP = Adenosinediphosphate
Both molecules found in muscles in small
PC + ADP => ATP + Creatine
One ATP molecule produced
Glucose molecule stored in muscles as
glycogen is shown as C6H12O6
 Lactic Acid molecule is shown as
C6H12O6 + 2ADP + 2P => 2C3H6O3 + 2ATP
2 ATP molecules formed (twice as much as
Phase 1) but with Lactic acid waste
Oxygen combines with Glucose to
produce ATP without Lactic acid
 Carbon Dioxide molecule is shown as
CO2. Given off as waste in this process.
C6H12O6+6O2+36ADP+36P => 6CO2+36ATP+6H2O
36 ATP produced with water and carbon dioxide
waste. Much more energy than phase 1 or 2
Phase 1 is limited to about 10 – 15 seconds as it quickly uses
up its store of PC molecules
Phase 2 is limited to about 3 minutes as lactic acid waste acts
to inhibit muscle contraction. It takes the oxygen in phase 3
to break down lactic acid and restore muscle ability.
Phase 1 and 2 produce instant energy for explosive/quick
Phase 3 is good for long duration exercise at moderate rates.
It uses oxygen to produce ATP molecules from glucose and
ADP. While it produces much more energy than phase 1 or 2
it is limited by the amount of oxygen getting to the muscles, if
exercise exceeds the VO2 intake, energy must be created by
phase 2 leading to lactic acid build up and muscle fatigue.
Phase 1 produces 1 ATP molecule
 Phase 2 produces 2 ATP molecules
 Phase 3 produces 36 ATP molecules
Phase 3 aerobic energy produces vastly
more energy than the first 2 energy
systems. So long as there is enough
oxygen and glucose stores one can
continue to exercise
Find a definition for Maximum Volume Oxygen Uptake.
Explain how increases or decreases in Max VO2
impacts the body’s ability to produce ATP energy
during aerobic exercise.
How is Lactic Acid a factor in the NHL when the puck
is iced? If you don’t know the icing rule ask around
and find out. Why do coaches sometimes use their
time outs during this play?
Answers should be about one paragraph and well written.

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