Section GROWTH and DEVELOPMENT Section GROWTH and DEVELOPMENT EVALUATION OF FOOT ANTHROPOMETRY AND SECULAR CHANGES IN TURKISH CHILDREN AND ADOLESCENTS Akca Duygu Hilal, Цzer Başak Koca Ankara University, Faculty of Languages, History and Geography, Department of Anthropology, Ankara, Turkey Evaluation of foot development is important for growth and development as well ergonomics studies. <...> The purpose of the present paper is to investigate age and sex dependent foot anthropometry and secular changes in Turkish children and adolescents. <...> A cross-sectional survey was conducted on 1427 (709 boys and 718 girls) healthy school children aged between 6–17 years from Ankara. <...> Height, foot length and foot breadth were measured according to the standard anthropometric protocols and foot index was calculated. <...> To reveal secular changes on foot growth, the data were compared with Bostancı’s study of 1950, which included 1679 healthy school children from Ankara. <...> Although during early childhood the boys have larger foot dimensions, just before the puberty girls catch up and sexual dimorphism disappear. <...> Positive secular increase was prominent for the foot length and breadth measurements for both sexes but this increment was greater for boys, which can be linked with the different degree of response to the improved environmental conditions. <...> Positive secular changes documented in the present study appear to be a logical outcome of gradual social changes. <...> Key words: Foot anthropometry, secular changes, children and adolescents, Turkey Contact information: Akca Duygu Hilal, e-mail: dhakca@gmail.com, Цzer Başak Koca, e-mail: bkozer@ankara.edu.tr. 49 TERRITORIAL VARIATIONS OF THE MATURATION RATES OF HAND AND WRIST BONES IN CHILDREN AND ADOLESCENTS Batsevich Valery, Mansurov Fayzali, Yasina Oksana Research Institute and Museum of Anthropology, Lomonosov Moscow State University, Moscow, Russia This research aims at studying the infl uence of ecological factors on the maturation rates of hand and wrist bones in children and adolescents. <...> It is based on the radiographs of the left hands, collected in the course of the expeditions of the Institute and Museum of Anthropology through 1964-2013 periods in 19 ethno-territorial child groups, aged 8-17 years, with the total number of 6456 individuals. <...> The Tanner-Whitehouse method (TW-2) was <...>