EPOC has fast and slow phase
fast phase reflects resynthesis of PCr incurred during O2 deficit
EPOC (Excess Post-exercise Oxygen Consumption) is also known as the afterburn effect, which is the increased rate of oxygen consumption that occurs after a strenuous exercise. EPOC is divided into two phases – fast and slow.
1) Fast Phase: This phase occurs during the first few minutes after exercise. During this phase, the body increases its oxygen consumption to meet the immediate energy demands of the muscles. This is primarily due to the buildup of lactic acid in the muscles, which needs to be cleared from the body through oxygen consumption.
2) Slow Phase: This phase occurs over the next few hours after exercise. During this phase, the body continues to consume oxygen at a higher rate than at rest. This is because the body needs to replenish its energy stores, repair damaged muscle tissue, and remove waste products generated during the exercise. This phase may last for several hours, depending on the intensity and duration of the exercise.
Overall, the fast phase of EPOC is short-lived and accounts for a relatively small portion of the total EPOC effect. In contrast, the slow phase of EPOC is more significant and is responsible for the majority of the afterburn effect.
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