The aim of this work is to determine possible deviations from the ideal structure of lifting and carrying objects during the performance of certain motor tasks by using kinematic analysis of the motor structure of lifting and carrying objects of early and preschool children. During the analysis, various parameters such as age and body mass index were considered and used to determine typical patterns. The analysis was done on 18 children attending the Sports program of the Z-active Society for Sports and Recreation from Duga Resa. Children's ages ranged from 3 to 6 years old. For the purposes of the analysis, the children performed the motor task of lifting and carrying a volleyball, cap and a medical kit at a distance of 5 meters. The recorded videos were analyzed using the content analysis method and certain descriptive parameters were obtained. The kinematic analysis was performed in the Kinovea program and the analysis was performed by measuring angles according to predefined parameters. The angles were measured at the ankle, knee and hip and certain patterns of foot position, foot lift, trunk position, head position, lifting method and carrying method were described. The research results show the correlation of body mass index and the way of lifting and lowering objects. Depending on the body mass index subjects perform of a one certain task differs. Having seen numerous differences, it can be concluded that the basic biotic motor skills of lifting and carrying are endangered because there is no certain constant when performing them. Also, as in many other areas, excessive body mass greatly affects the motor skills of children. In addition to the body mass index, deviations in the results also occur due to the different ages of the children. This research emphasizes the importance of physical activity for children, especially those adapted and suitable for children of early and preschool age. Biotic motor skills in children are increasingly endangered and it is necessary to work on the complete motor development of children with targeted content to preserve and additionally adopt the motor skills necessary for everyday life, but also to lay the foundations for the further development of motor skills in children. Through these procedures we can establish the basis for further growth and development of healthy lifestyle habits.