ABSTRACT
Recently, the problem of the high incidence of throwing injuries in young people has been gaining attention. Identifying high-risk players before the onset of the throwing injury is important for prevention. One of the most widely used screening tests for sports-related injuries is the Functional Movement Screen (FMS), which assesses the quality of movement; however, its correlation with throwing injuries has not been established. The purpose of this study was to investigate the correlation between the FMS score and throwing injuries. The FMS was used during the medical check for two hundred and thirty junior high school baseball players. We allotted those who had experienced throwing injuries multiple times to the injury group and those who had never experienced throwing injury to the control group. We then calculated the FMS cutoff value using the receiver operating characteristic curve. In addition, we investigated differences in the incidence of throwing injury between above and below the cutoff value using chi-square test. The FMS cutoff score was 17. Players who scored ≤17 had a significantly higher incidence of throwing injuries than those who scored ≥18. Conclusion: We believe that FMS score is correlated to throwing injuries. In addition, the results suggest that throwing injuries might be prevented in junior high school baseball players who scored ≤17 on the FMS if they undergo training in the correct movement patterns.
ABSTRACT
Purpose: The aim of the present study was to make an ankle destabilization device and investigate the effect of exercise with this device on peroneal muscles.Methods: Seventeen healthy subjects were instructed to undergo step movement exercise with the lower extremity 150 times on the spot using the ankle destabilization device. Before and after stepping, the reaction time and mean frequency of the peroneus longus and the peroneus brevis muscles were compared. While stepping with the device, muscular activity of the peroneus longus and the peroneus brevis was compared under both stable and instable conditions.Result: The results showed that peroneal reaction time didn't change after stepping with the device; but the frequency of peroneal muscle activity increased after stepping. While stepping, muscular activity of the peroneal muscles increased in an instable condition.Conclusion: The results suggested that stepping exercise with the device could be beneficial for peroneal muscles.