[Poor body posture from the aspect of kinesiology]

We investigated the presence of abbreviations of the muscles of the pelvi-femoral muscular tissue, the calf flexors of leg, short back extensors as wall as the muscles strength of the abdominal wall, because the present abbreviation and decrease of muscle strength indicate bad posture of body which is presents the foundation of the lumbal syndrome. All subjects were divided into three groups according to the age (7, 9 and 18 years) and we determined muscular abbreviations regarding decreased strength by means of four tests. All present abbreviations as well as decreased muscular strength point to the necessity of early detection and treatment of these phenomenon in the prevention of lumbal syndrome.