First and Last Name/s of Presenters

Mary HemmerFollow

Participation Type

Poster

Mentor/s

Dr. Matthew Moran

College

College of Health Professions

Location

University Commons

Start Day/Time

4-24-2019 2:00 PM

End Day/Time

4-24-2019 5:00 PM

Abstract

The functional movement screen (FMS) deep squat (DS) is used to identify movement deficiencies and potentially predict injury. While evidence does not support the predictive validity of FMS scores, useful information can still be obtained. Weight shifts are often observed in the FMS DS, but current literature lacks information about asymmetrical weight distribution. PURPOSE: To determine the amount of weight distribution asymmetry in physically active young adults during the FMS DS. METHODS: Nineteen physically active participants (11 F, 8 M, 20.2 ± 1.0 yo) were recruited and granted informed consent. Participants performed three trials of the FMS DS with feet flat (FF) followed by three trials with elevated heels (EH) elevated on a 2x6 board. Trials were completed on two embedded force plates (1200Hz). Vertical ground reaction force (vGRF) data were used to determine asymmetry in bilateral weight distribution. Six reflective markers placed bilaterally on the greater trochanter, lateral femoral epicondyle and lateral malleolus were tracked with a 10-camera motion analysis system (120Hz). A Matlab script processed the data and computed knee flexion angle and vGRF asymmetry at squat initiation and full squat. Paired samples t-tests with a significance level of 0.05 were used. RESULTS: A significant increase (po, Right 105.8±20.5o) compared to FF (Left 100.8±22.5o, Right 101.0±23.1o). On average, participants experienced >5% asymmetry (0% being perfectly symmetric) for the starting position and full squat position during both FF and EH. There were no significant differences in weight distribution symmetry in the starting position (p=0.31) between squat conditions. The EH condition did not significantly change weight distribution symmetry (p=0.69) in the full squat position. Within squat condition, there was no significant differences between weight distribution symmetry from the starting position to the full squat position (FF: p=0.76, EH: p=0.43). CONCLUSION: Bilateral weight distribution asymmetry was present in the FMS DS both with flat and elevated heels in physically active participants. Coaches and trainers should consider implementing training programs to optimize biomechanical function during the FMS DS.

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

Bilateral Weight Distribution Asymmetry in the Functional Movement Screen Deep Squat

University Commons

The functional movement screen (FMS) deep squat (DS) is used to identify movement deficiencies and potentially predict injury. While evidence does not support the predictive validity of FMS scores, useful information can still be obtained. Weight shifts are often observed in the FMS DS, but current literature lacks information about asymmetrical weight distribution. PURPOSE: To determine the amount of weight distribution asymmetry in physically active young adults during the FMS DS. METHODS: Nineteen physically active participants (11 F, 8 M, 20.2 ± 1.0 yo) were recruited and granted informed consent. Participants performed three trials of the FMS DS with feet flat (FF) followed by three trials with elevated heels (EH) elevated on a 2x6 board. Trials were completed on two embedded force plates (1200Hz). Vertical ground reaction force (vGRF) data were used to determine asymmetry in bilateral weight distribution. Six reflective markers placed bilaterally on the greater trochanter, lateral femoral epicondyle and lateral malleolus were tracked with a 10-camera motion analysis system (120Hz). A Matlab script processed the data and computed knee flexion angle and vGRF asymmetry at squat initiation and full squat. Paired samples t-tests with a significance level of 0.05 were used. RESULTS: A significant increase (po, Right 105.8±20.5o) compared to FF (Left 100.8±22.5o, Right 101.0±23.1o). On average, participants experienced >5% asymmetry (0% being perfectly symmetric) for the starting position and full squat position during both FF and EH. There were no significant differences in weight distribution symmetry in the starting position (p=0.31) between squat conditions. The EH condition did not significantly change weight distribution symmetry (p=0.69) in the full squat position. Within squat condition, there was no significant differences between weight distribution symmetry from the starting position to the full squat position (FF: p=0.76, EH: p=0.43). CONCLUSION: Bilateral weight distribution asymmetry was present in the FMS DS both with flat and elevated heels in physically active participants. Coaches and trainers should consider implementing training programs to optimize biomechanical function during the FMS DS.

 

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