Discussion
Improving reactive postural control ability is critical for fall prevention. Further, improving mediolateral stability contributes to the stability of standing and gait. This study aimed to clarify the effects of unexpected perturbation-based balance exercises using WBED on reactive postural control. The experimental results showed that balance exercises using WBED immediately improved reactive postural control.Furthermore, the D-COPInterestingly, although unexpected perturbation by WBED in the intervention session was in the mediolateral direction, COPThis study has several limitations. First, the number of participants of this study was only males and not large. A larger sample size may have provided more considerable results. Second, this study did not include older adults and individuals with impaired postural control. Future studies should include older adults and individuals with impaired postural control, with safety considerations. Furthermore, it is necessary to measure EMG and motion, as well as include questionnaire on balance exercise using wearable devices. Questionnaires may improve the usability of this device. Verification of the effectiveness of EMG and body motion might yield important insights in improving reactive postural control. Despite these limitations, perturbation-based balance exercise using WBED can improve reactive postural control function.