Szczepanowska-Wołowiec Beata, Sztandera Paulina. The analysis of feet construction versus BMI in 8-year-old boys. Journal of Education, Health and Sport. 2017;7(9):292-300. eISSN 2391-8306. DOI http://dx.doi.org/10.5281/zenodo.995681 http://ojs.ukw.edu.pl/index.php/johs/article/view/4844 The journal has had 7 points in Ministry of Science and Higher Education parametric evaluation. Part B item 1223 (26.01.2017). 1223 Journal of Education, Health and Sport eISSN 2391-8306 7 © The Authors 2017; This article is published with open access at Licensee Open Journal Systems of Kazimierz Wielki University in Bydgoszcz, Poland Open Access. This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited. This is an open access article licensed under the terms of the Creative Commons Attribution Non Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted, non commercial use, distribution and reproduction in any medium, provided the work is properly cited. This is an open access article licensed under the terms of the Creative Commons Attribution Non Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted, non commercial use, distribution and reproduction in any medium, provided the work is properly cited. The authors declare that there is no conflict of interests regarding the publication of this paper. Received: 15.08.2017. Revised: 10.09.2017. Accepted: 10.09.2017. The analysis of feet construction versus BMI in 8-year-old boys Beata Szczepanowska-Wołowiec1,2, Paulina Sztandera3 1Department of Rehabilitation in Disease of the Locomotor, Institute of Physiotherapy, Faculty of Medicine and Health Science, Jan Kochanowski University, Kielce, Poland Head of the Department: Prof. Ireneusz Kotela MD, PhD 2Rehabilitation Department, Regional Polyclinical Hospital, Kielce, Poland Head of the Department: Grażyna Ściegienna-Zdeb MD 3Doctoral Studies, Faculty of Medicine and Health Science, Jan Kochanowski University, Kielce, Poland Beata Szczepanowska-Wołowiec ORCID ID 0000-0002-7051-3042, email: beatawolowiec@op.pl, Paulina Sztandera ORCID ID: 0000-0002-1848-562X, email: sztandera.paulina@gmail.com Abstract Introduction. The foot due to its complex structure provides three basic functions: supportive, locomotive and amortization. The human foot is an important static-dynamic part of the motor system. A properly shaped foot should be supported by three points: the first and the fifth metatarsal bone and the external part of the heel. Purpose of research. The aim of the study was to analyze the feet construction and find the relationships between the foot structure parameters and BMI among 8-year-old boys. Material and methods. The study involved 85 boys. The weight and the body height of the children were measured, body mass index was calculated, and the footprint using the was made. On the basis of the foot picture, the basic parameters for foot assessment as well as relations between these indicators and BMI were calculated. Subsequently, the Clarke angle, the hallux valgus angle and Wejsflog index were determined in manual way. Then the dependency between these parameters and BMI was investigated. Results. The number of lower foot arch or flat foot in the study group amounted to 53%, the transverse flat foot was observed among 17% of the studied boys feet and the hallux valgus angle beyond the norm occurred in 9% of the studied feet. There is a relationship between the Clark’s angle, Wejsflog index, hallux valgus angle α and BMI of boys. Conclusions. Boys with a higher BMI have lower values of the Clark angle and the Wejsflog index which are the evidence of a lower longitudinal and transverse arch. Children with higher BMI have higher values of the angle of hallux valgus α Keywords: foot arch, foot structure, children, BMI.