Standard Versus Arm-Length-Normalized Conditions for Assessment of the Closed Kinetic Chain Upper Extremity Stability Test in Healthy Youth Athletes

The authors aimed to compare performance and establish agreement between standard and arm-length-normalized conditions of the Closed Kinetic Chain Upper Extremity Stability Test (CKCUEST) in healthy adolescent athletes. They found that performance was significantly better in the arm-length-normalized condition, suggesting it may be a more appropriate assessment method, particularly given the influence of arm length, body mass, and sport type on results. The study highlights the need for population-specific reference values in evaluating shoulder stability.