Effect of Body Composition and Hamstring Flexibility on Closed Kinetic Chain Lower Extremity Stability in Young Adults: A Cross-sectional Study

The kinetic chain refers to the coordination of segments of the body for holistic movement; its assessment and enhancement have the potential to improve sports performance and reduce the risk of injury. This study aims to explore the relationship between body composition, hamstring flexibility, and closed kinetic chain lower extremity stability. A total of 92 young adults who were uninjured and exhibited a moderate level of physical activity were the subjects of a series of tests designed to ascertain their body composition using bioimpedance analysis, hamstring flexibility using the sit-and-reach test, and lower extremity kinetic chain function using the closed kinetic chain lower extremity stability test (CKCLEST). An analysis revealed no discernible relationship between the CKCLEST test score and body composition measurements or sit-and-reach test scores, with a statistical significance level of p<0.05. It is important to recognise that factors such as body composition and flexibility may not directly influence CKCLEST results. The findings of this study are anticipated to facilitate a more efficacious utilisation of CKCLEST in clinical practice and a more profound comprehension of its potential benefits.