EPOC and its alactic and lactacid stages, how long each takes, raised breathing after exercise, the 400 m and the jog, using the alactic stage in training, body temperature and the effect of training.

What you need to know

Answer each one before you reveal it.

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Process

What happens in the alactic and lactacid stages of EPOC, and how long does each take?

Key term

What is EPOC?

Process

What are the two stages of EPOC?

Questions from this subtopic

Each one with the model answer underneath.

1
What is EPOC?
Model answer
EPOC is excess post-exercise oxygen consumption. It is the oxygen consumed above resting levels during recovery.
2
What are the two stages of EPOC?
Model answer
The two stages are the alactic stage and the lactacid stage. They are also called the fast and slow components.
3
What happens during the alactic stage of EPOC?
Model answer
Phosphocreatine stores are restored and myoglobin is re-saturated with oxygen. This is the fast replenishment stage.
4
How long does the alactic stage take?
Model answer
Phosphocreatine is about half restored in 30 seconds and almost fully restored within about three minutes.
5
What happens during the lactacid stage of EPOC?
Model answer
Lactic acid is removed and muscle glycogen stores are restored. This is the slow replenishment stage.
6
How long does the lactacid stage take?
Model answer
Lactic acid removal can take an hour or more. Full restoration of glycogen can take a day or longer.

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