Comparison of Single-Leg Balance Test in Healthy Athletes with Chronic Ankle ‎Instability (Noncoper)‎‏ ‏and Coper ‎

Ankle sprain is one of the most commonly damaged lower extremities. More than 70% of people with ankle sprain experience chronic ankle instability. However, some people are well adapted to this damage (Coper people) and do not suffer from chronic ankle instability. The aim of this study was to compare the balance in healthy athletes with chronic ankle instability and coper during one leg standing.

13 athletes with chronic ankle instability with mean age of 22.3 ± 2.21 years, weight 57.07 ± 7.48 kg and height 166.76 ± 5.8 cm, 10 Cooper athletes with an average age of 1.37 ± 21.9  years, weigh 56.5 ± 5.78 kg and height 165.9 ± 7.4 cm and 11 healthy athletes with an average age of 24.44 ± 4.3 years, weight 57 kg ± 97.7 kg, and The height of 165.72 ± 27.57 cm was participated in this study. Each participant for 20 seconds maintained their single-foot balance on the 3rd and 12th balance points of Biodex. The results of the study were analyzed using MANOVA at a significant level of 95% and alpha less than or equal to 0.05.

The results showed that the balance index did not differ significantly between healthy and Coper Groups However, in the group of chronic ankle instability, the internal-external balance index and the overall index were significantly higher than the healthy group (p≤0/05).

The chronic ankle instability group has poor balance, especially in the internal-external direction, which can be due to damage to the ankle ligament and some deep receptors located on the ankle ligament of the ankle.