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Publication
Reaction forces and bone maturation in taekwondo: comparison of practice with and without Tatami
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Advisor(s)
Abstract(s)
Purpose. Exercise performed improperly, in disagreement with age and development, may trigger negative bioactive effects.
Adolescent taekwondo athletes, being able to practise on tatami or without tatami and barefoot, may be submitted to
musculoskeletal structure disorders. the purpose of this study was to describe the frequency and amplitude of the reactive
forces during taekwondo practice with and without tatami.
Methods. Overall, 27 adolescent taekwondo athletes aged 10–15 years were submitted to a standard 90-minute training
session with and without tatami. During each session, the frequency of ground contacts and the vertical ground reaction
forces were measured. Femur and wrist bone age and the respective stages of the epiphyseal plate were computed from
radiograph images. A total of 6346.6 ± 425.5 ground contacts (an average of 106 contacts per minute) were registered during
the training session. the Wilcoxon test was applied to analyse the relationship between taekwondo and epiphyseal plate
stage (p 0.005).
Results. Student’s t-test revealed a significant difference between ground reaction forces with and without tatami; tasks
performed without tatami featured smaller magnitudes for comparisons of absolute and normalized values (t = –3.359;
p < 0.002 and t = –3.652; p < 0.001, respectively). the time of practice showed no early closure of the femur epiphyseal plates
caused by the practice of taekwondo.
Conclusions. Practising taekwondo seems to have a bio-positive effect on the maturation of adolescent athletes, regardless
of the use of tatami.
Description
Keywords
taekwondo adolescents epiphyseal growth plates support reaction forces bone maturation
Citation
Rocha, F., Conceição, A., Mata, C., Narciso, J., M. Costa, A., & Branco, M. et al. (2021). Reaction forces and bone maturation in taekwondo: comparison with and without tatami. Human Movement. https://doi.org/10.5114/hm.2023.107246
Publisher
Human Movement