BODY POSTURE AND THE TIME OF A SIMPLE REACTION ON THE VISUAL STIMULUS MEASURED AMONG GIRLS AND BOYS AGED 14 TO 16
Journal Title: Medycyna Sportowa - Year 2006, Vol 22, Issue 6
Abstract
Background. Coordination abilities make it possible to perform accurate and precise movements in changing outside conditions. The aim of the research was to evaluate the postures of girls and boys aged 14 to 16 examined with Moiré's photogrammetric method, estimate the time of a simple reaction and show a connection between the time of a simple reaction on the visual stimulus and the body posture.Material and methods. 292 people took part in the research, including 153 (52%) girls and 139 (48%) boys from the Grammar School number 3 in Starachowice. The research was done in April and May 2004.Results. In the examined group there were the most cases of lateral curvatures of the spine- 177 (61%) and 132 cases (45%) of posture asymmetries. Among faulty postures in the sagittal plane concave backs dominated ? 74 (25%). There were 3 cases (1%) of rounded backs and 38 cases (13%) of flat backs. Among girls the best time of a simple reaction was obtained by 15-years old (0,28 s), and then there were 16-years old (0,29 s) and 14-years old (0,31 s). Among boys the best time of a simple reaction was obtained by 16-years old (0,27 s), and then there were 15-years old and 14-years old (0,28 s).Conclusions. The analysis of correlation coefficients does not make it possible to state clearly that there is an essential dependence between some posture characteristics and the time of a simple reaction. Obtained results are probably an effect of small-numbered examined groups and not essential statistical correlation. The issues connected with body postures and elements of movement coordination need further examination.
Authors and Affiliations
Jacek Wilczyński
Keywords
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