No abstract

The study of the spatial and temporal characteristics of the gait of children and adolescents is an important task. The purpose of this study was to determine the spatial and temporal characteristics of the gait of children and adolescents of different age categories who systematically engage in sports.Methods. On motion capture complex Vicon in the Center for Collective Use "Three-dimensional study of the biomechanics of motion" of the Astrakhan State University, 43 children were examined: 22 children in the control group and 21 children in the study group.Results. Quantitative indicators of the spatial and temporal characteristics of the gait of children engaged in sports dancing were obtained and a comparative analysis of this data with the control group was carried out. An increase of walking speed and cadence, a decrease in the time of single and double support in male athletes in the 7-12 year old group was revealed; increased of walking speed and cadence, a marked decrease in the time of single support, a decrease in the limp index in female athletes in the 7-12 year old group; an increase the cadence in female athletes in the group of 12-15 years.Conclusions. Doing sport every day helps with the spatio-temporal changes of the walk among children and teenagers. The imbalance of the motor function is examined among girls, that doing sports between the age of 7-12, so that’s why it needs a special attention from doctors, traumatologist and orthopedists.

1 Кафедра анатомии, 2 кафедра детской хирургии, 3 кафедра профилактической медицины и здорового образа жизни Астраханского государственного медицинского университета, Астрахань; 4 лаборатория изучения биомеханики движений человека Астраханского государственного университета, Астрахань E-mail: irina-nurzhanova@yandex.ruНа основании данных, полученных при помощи системы захвата и анализа движения, определены кинематические параметры коленного сустава в шаговом цикле у 25 мужчин 17-25 лет нормостенического телосложения. Амплитуда движений в коленном суставе составила: сгибание -53,8±1,2°, осевая ротация голени -9,4±0,4°, боковое смещение коленного сустава -12,9±0,5°. На основании корреляционного анализа выявлена сильная связь между сгибанием в коленном суставе и изменением установки колена (варус/вальгус), а также связь средней силы между установкой ко-лена и осевой ротацией голени. Коэффициент ассоциации слабой силы является показателем стабильности коленного сустава при его разгибании, а средней силы -меньшей стабильности при его сгибании.Ключевые слова: коленный сустав, шаговый цикл, мужчины, кинематические параметры. ANALYSIS OF KNEE JOINT MOTIONS IN STEP CYCLE IN YOUNG AND ADULT MEN OF 17-25 YEARS Laboratory of Investigation of Human Movements Biomechanics of Astrakhan State University, AstrakhanThe data received with the help of capture system and movement analysis helped to determine the cinematic parameters of knee joint in step cycle of 25 men aged 17-25 with normosthenic body type. The amplitude of motions in a knee joint was: in flexion-53.8±1.2°; knee axis rotation -9.4±0.4°; lateral knee displacement -12.9±0.5°. The correlation analysis revealed the strong link between knee joint flexion and lateral knee displacement and its axis rotation. The factor of weak power association may indicate the knee joint stability in extension and mild power indicates the less stability in its flexion.