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when does this system kick in?
after 10 seconds
Site of reaction
sarcoplasm
How many ATP do you get?
2 ATP
How long does the system last?
3 minutes, peaks at 1 min
Type of reaction
Exothermic
Fuel
glucose
enzymes used
PFK
GPP
LDH
By-products
lactic acid
Intensity of exercise
High
Process
ATP levels drop, ADP levels rise
PFK breaks down glucose
GPP breaks down glycogen if needed
produces pyruvic acid
produces 2 ATP
LDH converts pyruvic acid to lactic acid
Recovery time
20 mins - 2 hours
Strengths
no delay waiting for O2
lactic acid recycled as fuel
Weaknesses
low ATP yield
lactic acid - fatigue
recovery takes long