Lactate threshold (LT) can be defined as the situation during exercise when the rate of formation of lactate that settle than the removal from muscle. It is anvaliant indicator for determining maximal exercise capacity and is used to measure and monitor endurance training. The physiology of LT is complex and involves changes in the muscle metabolism, cardiovascular and endocrine systems, and is a result of the increasing intensity of exercise. At rest, the muscle fibres use primarily fats as their energy source, but as exercise intensity increases, there is a progressive shift towards carbohydrate metabolism.