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EP-04 Biomechanics and Neural Control of Movement

Does Ankle Inversion Or Eversion Torque Correlate With Reaction Time In Collegiate Women Soccer Players?


Shim, Andrew; Feehan, Maggie; Williams, Arriyan; Scott, Jada; Juan-Diego, Jessica

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Medicine & Science in Sports & Exercise: August 2021 - Volume 53 - Issue 8S - p 141-142
doi: 10.1249/01.mss.0000760772.42488.57
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Soccer requires participants to use speed, change of direction, and reaction time in order to perform at an optimal level. Soccer also has the highest ankle sprain rate among collegiate women’s sports. Ankle inversion and eversion torque could play an important role towards reduction of injuries and improving soccer performance.

PURPOSE: To determine if there is a relationship between ankle inversion or eversion torque with individual foot reaction time.

METHODS: A one-shot case study design was selected for this investigation. 17 healthy female college athletes (age 20.6 ± 1.2; height 64.47 ± 3.3 cm; weight 137.88 ± 22.4lbs.) from a Midwest institution volunteered to participate. Dominant and non-dominant foot reaction time measurements were assessed using 2x4 switch mats, model 63515A interfaced with a precise timing counter model 54060A, measured to .0001 seconds (Lafayette Instruments, Lafayette, IN.). Participants stood in an athletic position while facing forward with the switch mat directly in front of their feet and quickly responded to the stimulus upon command. Each participant had one practice trial in order to become familiar with the test. Two trials were performed with the dominant foot and non-dominant foot. The averages of both attempts (.0001 sec.) were averaged to determine mean reaction time for each foot. A Biodex III isokinetic dynamometer (Biodex Medical Systems, Shirley, NY.) was then used to assess inversion and eversion torque for both dominant and non-dominant ankle joint at 120 degrees per second for 2 sets per 5 repetitions at a maximum effort after each participant’s ROM was assessed per ankle. Pearson Correlations using SPSS (ver. 26) determined the relationship between right and left ankle peak torque of inversion and eversion to average response times of right and left foot reaction time.

RESULTS: Left Peak Torque Eversion and Left Foot Reaction Time (r = - 0.457; p value = .033) demonstrated a significant moderate relationship. Other collected variable measures were not significant.

CONCLUSION: Left ankle peak torque eversion does have a moderate relationship to reaction time of the left foot.

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