Abstract
Background: The Functional Movement Screen (FMS) is used to evaluate key movement patterns, functional symmetry, and identify individuals that are at elevated risk of injury. The purpose of this study was to assess whether dynamic postural control is a significant component of the composite FMS score by comparing it with Y-Balance Test (YBT) reach distances. Methods: Seventy-eight participants (including 40 males) performed the standardized FMS protocol followed by the YBT. The YBT reach distances were normalized to leg length and averaged between sides and trials. The individual reach directions were evaluated, and were also summed to form an aggregate YBT distance (TotalY). Results: We observed weak correlations between the composite FMS score and normalized posterolateral reach, normalized posteromedial reach, and the TotalY (r=0.36, 0.37, and 0.36, respectively; all p< 0.05). There was no correlation between the composite FMS score and normalized anterior reach (r=0.22; p=0.053). Together these findings demonstrate partial correspondence between the two tests. Conclusion: This indicates that dynamic postural control is a small component of the aggregate FMS score.
Highlights
Movement screening tools are widely used in fitness, professional sports, and as methods of assessing participants to determine underlying weaknesses or predisposition to injuries [1]
Images of the Y-Balance Test (YBT) reach directions are published elsewhere [3]. Both the YBT and Functional Movement Screen (FMS) are purported to assess dynamic postural control, stability, mobility, movement patterns, functional symmetry, and identify individuals that are at elevated risk of injury [2, 5, 12]
One recent study determined there was no correlation between individuals’ scores on the FMS and YBT anterior right-left difference and composite reach directions in a military population [17]. Since these earlier studies have investigated the relationship between FMS scores and the YBT in college-aged students and military personnel, the purpose of the current study was to directly assess this relationship in a healthy, general population, in order to determine whether dynamic postural control is a component of the aggregate FMS score
Summary
Movement screening tools are widely used in fitness, professional sports, and as methods of assessing participants to determine underlying weaknesses or predisposition to injuries [1]. Y-Balance Test (YBT), a modified version of the Star Excursion Balance Test (SEBT), is used as a pre-participation screening tool and is designed to assess dynamic postural control due to poor movement patterns [3]. Both the FMS and YBT are commonly used by exercise professionals [4]. If the participant reports pain on a clearing test, the score for the related functional task is changed to zero. Conclusion: This indicates that dynamic postural control is a small component of the aggregate FMS score
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