Abstract: assessment of body composition is an essential measure of health and fitness both for athletes and the general population. The body composition is a factor contributing to sport performance. The body fat varies with age and sex and the desirable body fat of athletes can vary depending on the sport, training level, energy intake. At non-athletes the assessment of body composition is important in order to appreciate the nutritional status and monitoring the treatment.

Key words: body composition, lean body mass, body fat.