Calcium carbonate – a salt of carbonic acid and calcium, used in dietary supplements as one of the calcium forms, because of its high bioavailability. It is an alkaline salt, which is why it is used for neutralisation of the environment in the stomach.
Calcium is a macroelement necessary for the proper functioning of the body system. It is a building material of teeth and bones as well as it determines their mechanical strength. The proper supply of calcium prevents osteoporosis in elderly people and allows for the proper development of skeletal system in children. It is an activator of many enzymes, is involved in the inflammatory processes and regulates secretion of particular hormones. It is also essential for muscle contraction and determines blood coagulation. Moreover, calcium ions allow for transmission of nerve impulses by synapses, so that they regulate the proper neural transmission.
The demand for calcium increases with training intensity, which is why it is recommended for athletes to increase calcium supply. Calcium deficiency can be caused by high-protein diet.