Background: Despite various treatment methods, many functional ankle instability (FAI) patients continue to experience functional deficits. Objectives: To investigate the effect of additional auditory feedback on balance and ankle function in task-oriented balance training for FAI patients. Design: Randomized controlled trial design. Methods: Forty FAI patients were randomly assigned to the auditory feedback task-oriented balance training (ATBT) group (n=20) and the task-oriented balance training (TBT) group (n=20). The training program was implemented for 4 weeks, 3 days a week. Results: After training, the COG movement area, speed, and distance significantly decreased in both the ATBT and TBT groups (P<.05). Additionally, the COG movement speed and distance in the ATBT group were significantly decreased compared to the TBT group (P<.05). The 6-meter crossover hop test time decreased in both the ATBT and TBT groups (P<.05). The ATBT group exhibited a significantly decreased 6-meter crossover hop test time compared to the TBT group (P<.05). Conclusion: Both ATBT and TBT enhanced balance and ankle function in FAI patients. ATBT was more effective in improving balance and ankle function than TBT.

INTRODUCTION
SUBJECTS AND METHODS
    Study design
    Subjects
    Procedure
    Outcome measures
    Data and Statistical Analysis
RESULTS
    Comparison of general characteristics
    Comparison of balance ability
    Comparison of ankle function
DISCUSSION
CONCLUSION
FUNDING
CONFLICTS OF INTEREST
AUTHOR CONTRIBUTIONS
REFERENCES

• Jaebok Lee(Department of Physical Therapy, Daegu University, Gyeongsan, Republic of Korea)
• Nayeon Kang(Department of Physical Therapy, Daegu University, Gyeongsan, Republic of Korea)
• Kyoung Kim(Department of Physical Therapy, Daegu University, Gyeongsan, Republic of Korea)
• Sangcheol Im(Department of Physical Therapy, Daegu University, Gyeongsan, Republic of Korea) Corresponding author
• Minseo Kim(Department of Public Health Sciences, University of California, Irvine, United States of America)