Context: Individuals with a history of concussion are more likely to sustain subsequent concussions or musculoskeletal injuries. Underlying mechanisms are unclear; however, anxiety-related reaction time deficits may play a role. Objective: Determine if state and trait anxiety, within-session anxiety ratings, and a concussion within the prior 10-14 months predict clinical and functional (i.e., head protective task, jump landing task) reaction times (RT) for both single and dual task conditions. Methods and Materials: Participants had a history of concussion (n=20, female=16) or were a healthy control (n=20, female=10). Participants completed the State-Trait Anxiety Inventory, within-session 0-10 anxiety ratings, a clinical RT test, and functional RT tests under both single and dual task conditions. A series of linear regression models were used to determine if the variables significantly predicted clinical and functional RT. Results: The models did not explain a significant proportion of the variance in clinical RT (R2=0.205; p=0.119), head protective single task (R2=0.048; p=0.776), head protective dual task (R2=0.090; p=0.494), jump landing single task (R2=0.205; p=0.083), or jump landing dual task (R2=0.123; p=0.316) RTs. Conclusions: Anxiety and a concussion within the prior 10-14 months did not predict clinical or functional reaction times at one-year post-concussion in a low-anxious sample and environment.
