In this work, which represents a small part of a wider research, the sensitive development phases of some anthropometric characteristics will be presented of the 7 to 15 years old pupils from the region of Prijedor. The target of the work is to reveal the sensitive phases of the anthropometrics characteristics with the 7 to 15 years old pupils in the body height, body mass, arm length, leg length and foot length. The results point to the fact that indications of the sensitive phases exist in the foot length and arm length in the age of 10-11, 13-14 and 14-15, but the indications of the sensitive phases in the body height are in the age of 7-8, 13-14 and 14-15. Basically, the rhythmic development without special drops in some ages is however equalised in the development of the anthropomotoric characteristics, though the period of more intensive development is noticed during the puberty. .
