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    Fact-finding survey regarding judo-related injuries of judokas in developing country
    (2020-02)
    Nakazawa, Rie
    ;
    Sakamoto, Masaaki
    ;
    ; ;
    [Purpose] The purpose of this study was to investigate sports-related injuries among judokas in Mongolia which is classified in the lower-middle income country. This study may help prevent future sports-related injuries. [Participants and Methods] We studied 75 judokas affiliated to the judo club in Ulaanbaatar, Mongolia. The questionnaire survey included questions regarding current and past judo-related injuries. [Results] Out of 75 judokas, 39% judokas had current judo-related injuries, and 25% judokas had past injuries. The injuries were most commonly located in the shoulder/clavicular, followed by that in the ankle and knee. The most frequent injury was a sprain/ligament injury, followed by a fracture and a dislocation. Seventy-three percent of current injuries and 88% of the past injuries received medical attention. Self-management was carried out for 35% of the injuries. The time lost from judo matches and training was 0-1,095 days for current injuries and 0-545 days for past injuries. [Conclusion] In this study, the injury rate for judokas was higher than that reported in previous studies. In addition, numerous severe injuries were noted. It is observed that, despite medical attention and self-management, the recovery periods are prolonged. Additionally, we believe that the judokas are unable to return to competition without problems.
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    Genetic and environmental effects on lumbar posture, flexibility and motion control in healthy adults
    (2020-12) ;
    Ferreira, Paulo H
    ;
    Pappas, Evangelos
    ;
    Pinheiro, Marina B
    ;
    BACKGROUND: Although alterations in posture, flexibility, and motion control of the lumbar spine are associated with low back pain, the underlying interplay between genetic and environmental influences on these traits remains unclear. The aim of this study is to investigate the extent to which genetics and the environment influence lumbar lordosis, flexibility, and motion control. DESIGN: The present cross-sectional and observational study employed the classic twin design with structural equation models. METHODS: An inertial measurement unit with a wireless movement analysis system, the ViMove (DorsaVi, Melbourne, Australia) was used to measure lumbar lordosis, flexibility, and motion control during range of motion and functional tests. Intraclass correlation was used to determine twin resemblance for the traits. Heritability (genetic influence on trait variation) of lumbar lordosis, flexibility and motion control was estimated from 52 healthy twins, 34 monozygotic and 18 dizygotic using age and sex adjusted univariate genetic models. RESULTS: A strong heritability estimate was found in lumbar lordosis (77%, 95% confidence interval [CI]: 38%-91%) in standing, followed by lumbar flexibility (67%, 95% CI: 32%-85%) in the sagittal plane. No significant intraclass correlations were found in monozygotic twin pairs for lumbar motion control or in dizygotic twin pairs during the hurdle step and in-line lunge test. CONCLUSION: Genetic factors appear to have a substantial influence on lumbar lordosis and lumbar sagittal flexibility. Lumbar motion control may be more influenced by environmental factors.
    Scopus© Citations 15