First and Last Name/s of Presenters

Louis CastroFollow


Prof. Eric Scibek,

Participation Type


College and Major available

College of Health Professions, Exercise Science UG


University Commons

Start Day/Time

4-24-2019 2:00 PM

End Day/Time

4-24-2019 5:00 PM


Apr 24th, 2:00 PM Apr 24th, 5:00 PM

Frequency of Biomechanical Faults in the Functional Movement Screen Overhead Deep Squat in Physically Active Individuals

University Commons

The functional movement screen (FMS) is a graded system that uses seven fundamental movement patterns to observe an individual’s movement competency. An FMS test that captures full body mechanics, is the overhead deep squat (ODS). The ODS assesses bilateral symmetry and mobility at the ankle, knee, & hip as well as the shoulder & thoracic spine. Subjects were scored based on their ability to meet the ODS criteria in the standard or modified test positions and were scored on a scale of 3-1. Previous studies have looked at differences in the kinematics of the ODS and selected dysfunctions, none have looked at the frequency of ODS dysfunctions in physically active individuals. PURPOSE: The purpose of this study was to investigate the frequency of common ODS dysfunctions across physically active individuals. METHODS:Forty-one physically active individuals (21F and 20M ± 1.4 yo; 68.5 ± 13.4 kg; 1.7 ± 0.17 m) performed the ODS with 37 demonstrating dysfunction. All subjects completed an informed consent and injury history questionnaire for this IRB approved study. Participants performed six trials of the ODS; 3 standard and 3 modified with 2x6 blocks elevating their heels. All participants were recorded using cameras capturing the frontal and sagittal plane of motion. Four criteria were used for scoring; 1. Torso was parallel to tibia or toward vertical, 2. Femur below horizontal, 3. Knees aligned over feet, 4. Dowel does not extend past feet. ODS dysfunctions were seen independently or in combinations of two or more. RESULTS: Thirty-seven participants demonstrated dysfunction on the ODS. There was no statistical difference in dysfunction frequency between males and females. The most common dysfunction was the combination of the torso/tibia alignment, the femur not reaching horizontal, and the bar moving beyond the toes. DISCUSSION: The results demonstrate that ODS dysfunctions tend to occur in combinations rather than individually. There appears to be a relationship between an individual’s inability to maintain an upright torso while fully descending into a squat. The observed bar displacement may be a function of the forward torso lean. Future research should explore the biomechanical limitations that lead to this combination of dysfunctions. Additionally, investigations into the association between the most frequently observed ODS dysfunctions and injury risk should be carried out to validate the use of the ODS in movement screening.


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