The Relationship Between Dynamic Stability and Functional Movement Screening Test

Purpose: Recently, the Functional Movement Screen (FMS) and Y Balance Tests are used to assess the key movement patterns, dynamic stability and to identify individuals at high risk of injury. But, there are few studies to assess the relationship between the FMS test and Y Balance Test. This study aimed to assess the relationship between dynamic stability and the FMS test. Methods: The subjects of this study were 95 students (Mean±SD age=26.7±3.13 y, Mean±SD height=177.4±6.9 cm, Mean±SD weight=72.02±6.91 kg, and Mean±SD BMI=22.93±0.41 kg/m2) from a university complex. All subjects were evaluated prior to the onset of training. Y Balance Test was used to evaluate dynamic stability and FMS test for evaluating the movement patterns of the subjects.  Results: The Pearson correlation coefficient was used to assess the relationship between variables. The results showed a significant association between the FMS score and the aggregate Y score (r=0.205, P=0.04). Also, there was a weak correlation between FMS and normalized posteromedial reach (r=0.27, P=0.04). However, the correlation between FMS and normalized anterior reach and posterolateral reach was not statistically significant (P>0.05).  Conclusion: These findings demonstrate partial correspondence between the two tests. However, the relationship is not strong enough to consider them interchangeable. Thus, dynamic postural control is not a large component of the aggregate FMS score.