Classical anthropometric methods are currently becoming more and more useful, mainly methods that can be used for body composition components assessing. Big advantage of these methods is mainly that they are not invasive, available, relatively not time demanding and cheap. These methods are used not only for normal population, but also for observation of risk population groups. Mainly by observation of these groups is body constitution reviewing by commonly used BMI insufficient. Results of human body composition components assessing, with an accent on fat component of obese children has been presented by the authors. Values of body fat component assessed according to Matiegka’s equations andmethod by Pařízková have been compared with values of fat component assessed by using modern examination method DEXA (dual energy X-ray densitometry). The results have been also confronted with values of reference group of non-obese girls. 49 obese children (19 boys and 30 girls) and reference group of 27 girls have been examined for this study.

        Key words: body composition, children obesity, Matiegka’s equations, DEXA