Excess Post Exercise Oxygen Consumption
Why you need to know about EPOC
We all want to get maximum results in the shortest amount of time. What would you say if I told you that the type of exercise you do can help to burn more calories whilst you are sitting writing that presentation? This physiological effect is called excess post-exercise oxygen consumption, or EPOC. Want to find out how to achieve this? We need to geek out a bit….
EPOC is the amount of oxygen required to restore your body to homeostasis (basically its normal level of metabolic function). Exercise that places a greater demand on the anaerobic energy pathways (higher intensity) can increase the need for oxygen long after the workout has finished, thereby enhancing the EPOC effect. During more steady state, lower intensity exercise, the body’s aerobic system can replenish the “oxygen debt” and you recovery quickly. This result is you only burn the calories during the actual workout. High intensity exercise is the best way to stimulate the EPOC effect.
The body expends approximately 5 calories of energy to consume 1 liter of oxygen. Therefore, increasing the amount of oxygen consumed both during and after a workout, can increase the amount of net calories burned. Burn more calories DURING and AFTER the workout…WIN WIN.
A perfect class for this is AFTERBURN. This type of training can be beneficial even if you are training for longer more endurance based events such as a marathon or triathlon. You will find that when you do go back to slower, steady state cardio, you’ll be able to maintain that longer with more ease.
Nutritionally you will need to ensure you “refill the tank” after this type of training. You will have depleted your muscle glycogen (energy stores) and the first hour after is the best time to replenish these stores. A meal containing quality protein, carbohydrates and a small amount of fat is idea. Head down to Natural fitness food and grab yourself the perfect refuel meal!
Bersheim, E. and Bahr, R. (2003). Effect of exercise intensity, duration and mode on post-exercise oxygen consumption. Sports Medicine, 33, 14, 1037-1060
LaForgia, J., Withers, R. and Gore, C. (2006). Effects of exercise intensity and duration on the excess post-exercise oxygen consumption. Journal of Sport Sciences, 24, 12, 1247-1264