Typically, the oxidation of fat to release energy occurs after about 15 to 20 minutes of aerobic exercise.
How does oxidation of fat occurs?
- After about 15 to 20 minutes of aerobic exercise, fats are oxidized in the mitochondria, Endoplasmic Reticulum (ER) , peroxisomes.
- Fat oxidation involves the breakdown of fatty acids.
- Mainly oxidation of fats is beta- oxidation which occurs in the mitochondria. It is named so because the bond between second (beta) and third carbon breaks.
- In the peroxisomes, alpha and beta oxidation of fats occur.
- While in the ER, omega oxidation occurs. It is an alternative to beta oxidation in some animals where omega carbon is oxidized.
- The rate of fat oxidation depends upon exercise duration, intensity, weight, nutrition.
- Oxidation of fats provides energy in low intensity exercises by contraction of muscles.
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