Journal Article10.1097/JSM.0000000000000731
Does Concussion Affect Perception-Action Coupling Behavior? Action Boundary Perception as a Biomarker for Concussion.
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TL;DR: These findings provide preliminary support for impaired vestibular/oculomotor function and ABP in ConcHx compared with NoHx and may enhance the understanding of the mechanisms for increased musculoskeletal injury risk after concussion.
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Abstract: BACKGROUND After a concussion, athletes may be at increased risk of musculoskeletal injuries. Altered perception of action boundaries (ABP), or the limits of one's action capabilities, is one possible mechanism for this increase in injury risk after concussion. OBJECTIVE To evaluate differences in symptoms, neurocognitive, vestibular/oculomotor, and action boundary function between subjects with no concussion history (NoHx) and concussion history (ConcHX). DESIGN Cross-sectional study. SETTING Laboratory at the University of Pittsburgh. PARTICIPANTS ConcHx (n = 22; age: 21.8 ± 3.0 years, height: 174.0 ± 8.3 cm, and mass: 77.8 ± 14.8 kg) and NoHx athletes (n = 24; age: 21.6 ± 2.0 years, height: 176.0 ± 10.0 cm, and mass: 72.0 ± 15.3 kg). INTERVENTION Immediate Postconcussion Assessment and Cognitive Testing (ImPACT) and Post-Concussion Symptom Scale (PCSS), Vestibular-Ocular Motor Screening (VOMS) tool, and the Perception-Action Coupling Task (PACT). The PACT measures the accuracy of ABP. MAIN OUTCOME MEASURES Neurocognitive domain scores, PCSS, VOMS subdomain symptom gain, ABP accuracy, and actualization. RESULTS ConcHx reported 2.7 ± 1.5 previous concussions occurring on average 263.8 ± 228.9 days prior. ConcHx was higher on several VOMS items including vertical/horizontal saccades (P = 0.001; P = 0.05), vertical/horizontal vestibular-ocular reflex (P < 0.001; P = 0.04), and visual motion sensitivity (P < 0.001). Average PACT movement time (P = 0.01) and reaction time (P = 0.01) were longer in ConcHx. CONCLUSIONS These findings provide preliminary support for impaired vestibular/oculomotor function and ABP in ConcHx compared with NoHx. The current results may enhance our understanding of the mechanisms for increased musculoskeletal injury risk after concussion.
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Citations
Increased Risk of Musculoskeletal Injury Following Sport-Related Concussion: A Perception-Action Coupling Approach.
Shawn R. Eagle,Anthony P. Kontos,Gert-Jan Pepping,Caleb D. Johnson,Aaron M. Sinnott,Alice D. LaGoy,Chris Connaboy +6 more
TL;DR: It is argued that athletes who have not re-established perception–action coupling loops following sport-related concussion may be at increased risk of subsequent musculoskeletal injury.
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Utility of a novel perceptual-motor control test for identification of sport-related concussion beyond current clinical assessments.
Shawn R. Eagle,Anthony P. Kontos,Aaron M. Sinnott,Meaghan E. Beckner,Bradley C. Nindl,Shawn D. Flanagan,Mita Lovalekar,Chris Connaboy +7 more
TL;DR: Perceptual-motor control tests may complement current sport-related concussion assessments when neurocognition and vestibular/ocular motor system are not grossly impaired.
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Landing Biomechanics in Adolescent Athletes With and Without a History of Sports-Related Concussion.
TL;DR: The results of this study provide a possible biomechanical rationale for the association between SRC and LE injury risk and suggest that previously concussed adolescent athletes complete drop-landing maneuvers with ankle and knee joint kinematic patterns that suggest greater risk for LE injury.
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Chronic impairments of static postural stability associated with history of concussion
TL;DR: Findings indicate that concussion is associated with impairments of maintaining standing postural stability that remain evident approximately 7 years following clinical resolution of the initial injury.
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Transitory kinesiophobia after sport-related concussion and its correlation with reaction time.
TL;DR: In this article, the authors examined kinesiophobia (i.e. fear of movement) among adolescent athletes with concussion compared to controls, and correlations of kinesophobia with symptoms and reaction time.
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