Lactate

Lactate, also known as lactic acid, is the end product of carbohydrate metabolism, which accumulates in the body as the result of intensive muscle work. The better one’s fitness level and muscle performance, the higher the load at which lactic acid begins accumulating.

Fitness beginners and competing athletes alike can determine recommended exercise intensity zones, i.e. aerobic and anaerobic threshold heart rate, by means of the lactate test. Theoretically, aerobic threshold heart rate is the one at which lactate concentration reaches 2 mmol/l, and anaerobic threshold heart rate is that at 4 mmol/l of lactate.

More precise aerobic and anaerobic heart rate values can be determined individually on the basis of the lactate curve, where the lactate concentration values measured at various load levels are indicated on one axis, and load values (heart rate, speed/angle or power in W) are indicated on the other axis.

At the same time, it should be noted that it will not always be possible to extrapolate the results obtained in laboratory conditions to actual training situations due to the nature of various sports. Still, training effectiveness can be monitored by means of repeated tests performed in standard laboratory conditions.

Lactate concentration in capillary blood (fingertip blood test) is determined by the nurse, and the results of the test requiring one needle prick will be available within seconds.

Lactate concentration may be determined during an ECG exercise test or cardiopulmonary exercise test, but the most precise information about aerobic and anaerobic processes is provided by the lactate test combined with a cardiopulmonary exercise test.

Lactate testing is included in versions B and D of health examination packages. Young athletes undergo this test as necessary.

Detailed information about exercise tests can be found HERE.