Poster or Presentation Title

Opponent Records Affect Head Impact Biomechanics in Collegiate Women’s Soccer Athletes

Presenter Information

Frances FosterFollow

Location

Hall Memorial Ballroom

Access Type

Campus Access Only

Presentation Type

Poster Presentation

Start Date

4-4-2018 12:00 PM

Department

Athletic Training

Abstract

Context: The discussion surrounding head impacts has become increasingly controversial in all sports due to the potential for long term consequences of subconcussive impacts. Objective: To determine the relationship between head impacts and win/loss records of opposing teams.Design: Descriptive epidemiology study. Setting: Collegiate soccer competition sites. Participants: Participants included 15 intercollegiate female soccer players. Interventions: Opponent record (above .500 and below .499) served as the independent variable. Main outcome measures: The magnitude and frequency of head impacts were measured with X2 Biosystem xPatch sensors by collecting linear (g) and rotational (deg/sec2) accelerations over 10 g. Head impacts that were recorded by the xPatch sensors were confirmed using video analysis. We determined frequency differences by calculating incidence rates per 1000 exposures and incidence rate ratios with corresponding 95% confidence intervals. Results: Opponent record significantly altered rotational acceleration (F1,409=5.17, P=.02, ɳ2=0.01), but not linear (P0.09=.08). Rotational accelerations when playing teams with a record above .500 (298257.13±231478.30 deg/sec2) were greater than a team below .500 (233106.99±234824.62 deg/sec2). Players sustained higher frequencies of head impacts when opponents had records above .500 (IR=1295.28, CI95=969.53-1435.24) compared to opponent records of .499 or below (IR=326.77, CI95=256.47-397.07; IRR=3.96, CI95=3.11-5.04). Conclusions: Findings suggest that rotational accelerations differed based on record due to greater competitiveness and athleticism when records are higher. NCAA Division III women’s soccer players are 3.96 times more likely to receive a head impact head during a game against an opponent with a record of .500 or above.

Key Words: head impact magnitudes, head impact frequencies, xPatch

Faculty Mentor

Thomas G. Bowman

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Apr 4th, 12:00 PM

Opponent Records Affect Head Impact Biomechanics in Collegiate Women’s Soccer Athletes

Hall Memorial Ballroom

Context: The discussion surrounding head impacts has become increasingly controversial in all sports due to the potential for long term consequences of subconcussive impacts. Objective: To determine the relationship between head impacts and win/loss records of opposing teams.Design: Descriptive epidemiology study. Setting: Collegiate soccer competition sites. Participants: Participants included 15 intercollegiate female soccer players. Interventions: Opponent record (above .500 and below .499) served as the independent variable. Main outcome measures: The magnitude and frequency of head impacts were measured with X2 Biosystem xPatch sensors by collecting linear (g) and rotational (deg/sec2) accelerations over 10 g. Head impacts that were recorded by the xPatch sensors were confirmed using video analysis. We determined frequency differences by calculating incidence rates per 1000 exposures and incidence rate ratios with corresponding 95% confidence intervals. Results: Opponent record significantly altered rotational acceleration (F1,409=5.17, P=.02, ɳ2=0.01), but not linear (P0.09=.08). Rotational accelerations when playing teams with a record above .500 (298257.13±231478.30 deg/sec2) were greater than a team below .500 (233106.99±234824.62 deg/sec2). Players sustained higher frequencies of head impacts when opponents had records above .500 (IR=1295.28, CI95=969.53-1435.24) compared to opponent records of .499 or below (IR=326.77, CI95=256.47-397.07; IRR=3.96, CI95=3.11-5.04). Conclusions: Findings suggest that rotational accelerations differed based on record due to greater competitiveness and athleticism when records are higher. NCAA Division III women’s soccer players are 3.96 times more likely to receive a head impact head during a game against an opponent with a record of .500 or above.

Key Words: head impact magnitudes, head impact frequencies, xPatch