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- W3040885055 abstract "Neuroimaging has identified significant disturbances in cerebrovascular reactivity (CVR) in the early symptomatic phase of concussion sport-related concussion. However, less is known about how whole-brain alterations in CVR evolve after concussion, and whether they remain present beyond medical clearance to return-to-play (RTP). In the present study, CVR was evaluated using blood-oxygenation level dependent functional magnetic resonance imaging (BOLD fMRI) during a respiratory challenge. Imaging data were collected for 110 university-level athletes, including 39 concussed athletes and 71 athletic controls. The concussed athletes were imaged at (1) the acute phase of injury (1 to 7 days post-injury); (2) the sub-acute phase (8 to 14 days post-injury); (3) medical clearance to RTP; (4) one month post-RTP; and (5) one year post-RTP. Enhanced negative BOLD response to controlled breathing was seen at acute injury, with attenuation of the effect mainly occurring by one year post-RTP. Secondary analyses showed that greater symptom severity and prolonged recovery were associated with enhanced BOLD response in the acute phase of injury, but a more attenuated BOLD response in the subacute phase. This study provides novel information characterizing the CVR response after a concussion and shows CVR to be a sensitive technique for evaluating long-term brain recovery." @default.
- W3040885055 created "2020-07-16" @default.
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- W3040885055 date "2020-07-14" @default.
- W3040885055 modified "2023-09-25" @default.
- W3040885055 title "Cerebrovascular Reactivity After Sport Concussion: From Acute Injury to 1 Year After Medical Clearance" @default.
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- W3040885055 doi "https://doi.org/10.3389/fneur.2020.00558" @default.
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