Alactic system is the old name of the famous phosphagen system. In this system, a lot of energy is produced in a short time and it is the result of breaking down creatine phosphate in the body. It is very useful in explosive sports and can be strengthened with heavy weight training or hit training.
CrP ............................... Cr + Energy + H2O
ADP + P + Energy ................................... ATP
The lactic energy system or the lactic acid system is caused by the glycolysis of important macronutrients such as sugars. This energy system is somehow caused by the anaerobic metabolism of carbohydrates and is widely used in speed sports. A variety of interval exercises can strengthen this energy system.