| Objective: To investigate the effects of new ankle balance device training on ankle function and postural control ability in patients with functional ankle instability (FAI). Methods: A total of 45 eligible patients with FAI were included and randomized into two groups: conventional functional training (n=21) and balance device training (n=24). Before and after the 8-week intervention, tests of ankle muscle latency were performed using the Noraxon surface electromyography test system and Trap-door ankle inversion induction device, tests of ankle position perception and ankle inversion-eversion isokinetic strength using the Biodex Systems IV isokinetic strength test system, postural control ability using the Y-balance test system (YBT), and scoring patients with FAI using the Cumberland ankle instability tool (CAIT). Results: After the 8-week intervention, the CAIT score, ankle muscle latency (medial head of gastrocnemius muscle, lateral head of gastrocnemius muscle, peroneus longus muscle and tibialis anterior muscle), ankle eversion isokinetic strength peak torque and postural control ability (maximum distance of adduction and abduction) of patients with FAI in the balance device training group were significantly improved as compared with those before intervention (P<0.05), and those in the balance device training group were significantly better than those in the control group (P<0.05). Conclusion: Compared with conventional functional training, ankle balance device training can significantly improve the postural control ability and ankle function of FAI patients. |
