Balance Markers and Saccadic Eye-Movement Measures in Adolescents With Postconcussion Syndrome

Deficits in both balance and oculomotor function, including impairments in saccadic eye movements, are observed in approximately 30% of patients postconcussion. Whereas balance and saccadic eye movements are routinely assessed separately, growing evidence suggests that they should be assessed concur...

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Veröffentlicht in:Journal of athletic training 2020-05, Vol.55 (5), p.475-481
Hauptverfasser: Rochefort, Coralie, Legace, Elizabeth, Boulay, Chadwick, Macartney, Gail, Goulet, Kristian, Zemek, Roger, Sveistrup, Heidi
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container_issue 5
container_start_page 475
container_title Journal of athletic training
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creator Rochefort, Coralie
Legace, Elizabeth
Boulay, Chadwick
Macartney, Gail
Goulet, Kristian
Zemek, Roger
Sveistrup, Heidi
description Deficits in both balance and oculomotor function, including impairments in saccadic eye movements, are observed in approximately 30% of patients postconcussion. Whereas balance and saccadic eye movements are routinely assessed separately, growing evidence suggests that they should be assessed concurrently. To compare balance measures and saccades between adolescents 1 to 3 months postconcussion and healthy uninjured adolescents. Case-control study. Concussion clinic and 2 private schools. Twenty-five adolescents (10 boys, 15 girls; median [interquartile range (IQR)] age = 14 years [11.5-16 years]) between 1 and 3 months postconcussion (median [IQR] time since injury = 39.5 days [30-56.75 days]) and 33 uninjured adolescents (18 boys, 15 girls; median [IQR] age = 13 years [11.5-14 years]). The center-of-pressure 95% ellipse area and medial-lateral and anterior-posterior velocity and the number of saccades in the dual-task balance conditions including a high cognitive load (cognitive condition), a low cognitive load and a gaze-shifting component (visual condition) or both a high cognitive load and a gaze-shifting component (combined condition). Concussion-group participants swayed over larger center-of-pressure ellipse areas in the visual ( = .02; effect size = 0.73) and combined ( = .005; effect size = 0.86) conditions but not in the cognitive condition ( = .07; effect size = 0.50). No group differences were identified for anterior-posterior ( = 2.57, = .12) or medial-lateral ( = 0.157, = .69) velocity. Concussion-group participants also did not perform more saccades than the control-group participants ( = 2.04, = .16). Performing dual-task balance conditions for which the secondary task involved a gaze-shifting component or both a gaze-shifting component and a high cognitive load resulted in greater sway amplitude in adolescents with concussion. However, these larger amounts of postural sway were not associated with increased saccadic eye movements.
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Whereas balance and saccadic eye movements are routinely assessed separately, growing evidence suggests that they should be assessed concurrently. To compare balance measures and saccades between adolescents 1 to 3 months postconcussion and healthy uninjured adolescents. Case-control study. Concussion clinic and 2 private schools. Twenty-five adolescents (10 boys, 15 girls; median [interquartile range (IQR)] age = 14 years [11.5-16 years]) between 1 and 3 months postconcussion (median [IQR] time since injury = 39.5 days [30-56.75 days]) and 33 uninjured adolescents (18 boys, 15 girls; median [IQR] age = 13 years [11.5-14 years]). The center-of-pressure 95% ellipse area and medial-lateral and anterior-posterior velocity and the number of saccades in the dual-task balance conditions including a high cognitive load (cognitive condition), a low cognitive load and a gaze-shifting component (visual condition) or both a high cognitive load and a gaze-shifting component (combined condition). Concussion-group participants swayed over larger center-of-pressure ellipse areas in the visual ( = .02; effect size = 0.73) and combined ( = .005; effect size = 0.86) conditions but not in the cognitive condition ( = .07; effect size = 0.50). No group differences were identified for anterior-posterior ( = 2.57, = .12) or medial-lateral ( = 0.157, = .69) velocity. Concussion-group participants also did not perform more saccades than the control-group participants ( = 2.04, = .16). Performing dual-task balance conditions for which the secondary task involved a gaze-shifting component or both a gaze-shifting component and a high cognitive load resulted in greater sway amplitude in adolescents with concussion. 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Concussion-group participants swayed over larger center-of-pressure ellipse areas in the visual ( = .02; effect size = 0.73) and combined ( = .005; effect size = 0.86) conditions but not in the cognitive condition ( = .07; effect size = 0.50). No group differences were identified for anterior-posterior ( = 2.57, = .12) or medial-lateral ( = 0.157, = .69) velocity. Concussion-group participants also did not perform more saccades than the control-group participants ( = 2.04, = .16). Performing dual-task balance conditions for which the secondary task involved a gaze-shifting component or both a gaze-shifting component and a high cognitive load resulted in greater sway amplitude in adolescents with concussion. 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subjects Adolescent
Adolescents
Age
Balance
Case-Control Studies
Cognitive Ability
Concussion
Control Groups
Ethics
Eye movements
Female
Humans
Male
Post-Concussion Syndrome - complications
Post-Concussion Syndrome - physiopathology
Postural Balance
Reaction Time
Researchers
Saccades
Symptoms (Individual Disorders)
Task Performance and Analysis
Teenagers
title Balance Markers and Saccadic Eye-Movement Measures in Adolescents With Postconcussion Syndrome
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