Physiology - glycolytic (lactic acid) system Flashcards
Is the lactic acid system anaerobic or aerobic
Aerobic
When does the lactic acid store kick in
After 10 seconds of high intensity exercise when ATP-PC stores are exhausted
What is the process of the lactic acid system
Glycogen - glucose using GPP, glucose - pyruvic acid using PFK (releases 2ATP), pyruvic acid - lactic acid using LDH only when oxygen supply is insufficient
Where does the process of the lactic acid system take place
Sarcoplasm
What is the process called that doesn’t uses oxygen to break down glucose
Anaerobic glycolysis
How long does the lactic acid system last for
3 minutes, most efficient at 1 minute
What effect does lactic acid have
Slows ATP resynthesis and causes fatigue
When does OBLA occur
4 mmol/L
Define OBLA
The point at which blood lactate levels significantly increase and fatigue sets in
What is the impact of anaerobic training
Increase tolerance to lactic acid and increase glycogen stores, delay OBLA
What are advantages of the lactic acid system
Energy provided quickly, no oxygen delay, stored glycogen can provide more ATP than PC stores, lactic acid can be recycled for further energy production
What are disadvantages of the lactic acid system
Inhibits muscular contraction, OBLA, reduces pH and prevents enzyme function, low ATP yield and long recovery
