Physical activity occupies an essential place in childhood and adolescence. It is extremely important when it comes to children of school age because it ensures and regulates the proper growth, development and health of the child. Contemporary teaching in general, including elementary school classes, is under strong influence of modern technology. Hence the current problem of today, which is the problem of daily, i.e. the weekly static load of pupils. A great concern is the postural problems, physical deformities and other degenerative diseases related to the spine. It is susceptible to various deformations and functional disorders in the period of 6. and 7. years of life. In children there are deformities of the spine and deformities of the foot and irregular posture including scoliotic and kyphotic improper posture. The most common deformities of the spine are scoliosis and kyphosis. The importance of early detection of spine deformations in children is crucial for the future health of the child. The only correct path is early recognition and emergency intervention. It is of great importance that children acquire the habit of proper posture and regular physical activity in order to successfully direct the child's growth and development. Emphasis should be placed on awareness of parents and children on the importance of regular physical activity in order to prevent these problems. Research goals are to examine the inclusion of school age children in extracurricular physical activity. Display frequency of spine deformations (scoliosis, kyphosis), irregular posture (kyphotic and scoliotic posture) and foot deformations in 3 primary schools, according to gender and pupil age. Examine whether there is a correlation between dealing with bodily activity and deformities of the spine.