Dimorphism of the spinal curvatures in the sagittal plane compared with somatic development
Journal Title: Antropomotoryka. Journal of Kinesiology and Exercise Sciences - Year 2011, Vol 21, Issue 56
Abstract
[b]Aim of the study.[/b] To characterize the dimorphism of the anterio-posterior spinal curvatures in a chosen development period in boys and girls contrasted with their somatic development. [b]Material and methods.[/b] The assumed hypothesis was that diversification of the anterio-posterior spinal curvatures in boys and girls was dependent on age and gender. The research was carried out in Płock in randomly chosen kindergartens and schools. The research group consisted of 1395 participants aged 6 to 16 (728 boys, 667 girls). The analysis of the spinal curvatures in the sagittal plane was carried out by means of the photogrammetric method based on the Moiré effect and evaluated with the help of statistical methods of data analysis. [b]Results.[/b] Spatial position of the spine is characterized by changes whose dynamics and direction depend on age and gender. The percentage of the spine’s length in the body height in 14 years old and older girls decreases, whereas in boys this tendency is noticeable during the whole analysed period. The length of lumbar lordosis and its percentage in the total length of the spine increases along with aging, whereas in the case of thoracic kyphosis it decreases – regardless of the gender. [b]Conclusions.[/b] The depth of the anterio-posterior spinal curvatures depends on the curvatures’ direction as well as on the age and sex of the person. Thoracic kyphosis shows a constant tendency to decrease, whereas lumbar lordosis to increase. In all age groups girls are characterized by a greater inclination angle in the lumbo-sacral spine. The remaining analysed angles of the anterio-posterior spinal curvatures show no gender-dependent characteristics.
Authors and Affiliations
Daria Domosławska, Ewa Demczuk-Włodarczyk
Keywords
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