Figure 6. Was postural control adversely affected by chronic ankle instability? Effect sizes and 95% confidence intervals compare healthy and chronic ankle instability groups. Whether postural control deficits existed in those with CAI compared with healthy controls is unclear. Effect sizes for Tropp²⁸ (COP area  =  0.96, 95% confidence interval [CI]  =  −24.91, 26.83) and Cornwall and Murrell²³ (anteroposterior COP length  =  .29, 95% CI  =  −17.60, 18.18; mediolateral COP length  =  .46, 95% CI  =  −17.43, 18.35) are not shown due to wide CIs. AP indicates anteroposterior; ML, mediolateral; EC, eyes closed; EO, eyes open; COP, center of pressure. Article reference numbers are superscripted.