[Feasibility of predicting the dynamics of human body mass].

An original mathematical model of human energy exchange was developed and implemented on a PC. Energy exchange of healthy volunteers on a free diet and physical activity was simulated by inputting examinees' individualized parameters in the model: total body mass, fatty and lean tissue, nutritional energy capacity, power inputs. The main purpose was to study the reliability of prediction of the time course of total body mass with relation to a dietary caloric value and physical activity of an examinee, which was found to be necessary for working out an optimum metabolic diet, e.