Background and purpose: Chronic ankle instability (CAI) is a common sports-related condition among volleyball players and may be associated with impaired postural stability and functional performance. This study aimed to investigate the effects of an eight-week neuromuscular training programme on functional disability, movement competency, and balance in volleyball players with CAI.
Materials and methods: This randomised controlled clinical trial included male volleyball players with CAI. Thirty athletes were randomly assigned to the control and intervention groups, with 15 participants in each group. Twenty-nine participants completed the study: 14 in the control group and 15 in the intervention group. Functional disability was assessed using the Foot and Ankle Ability Measure-Sports Subscale (FAAM-Sports). Static and dynamic balance were assessed using the Stork Stand Test and Y-Balance Test, respectively. Movement competency was evaluated using the Lateral Jump, One-Leg Jumping, and Shifting Platforms tests. Participants in the intervention group completed neuromuscular training three times per week for eight weeks. Data were analysed using paired-samples t-tests, analysis of covariance (ANCOVA), Mann-Whitney U tests, and Wilcoxon signed-rank tests. All statistical analyses were performed using SPSS version 24.
Results: The groups did not differ significantly in demographic characteristics at baseline (P > 0.05). Following the intervention, functional disability decreased significantly (P = 0.001). Static balance, dynamic balance, and movement competency also improved significantly (P ≤ 0.05). Between-group comparisons showed statistically significant differences in all outcome measures (P ≤ 0.05).
Conclusion: The findings suggest that an eight-week neuromuscular training programme may reduce functional disability and improve movement competency, static balance, and dynamic balance in volleyball players with CAI
(Clinical Trials Registry Number: UMIN000055128)