The Effect Of A Single Bout Of Sub-symptom Threshold Aerobic Exercise On Executive Function In Acutely Concussed Athletes
Bibliographic record
Abstract
PURPOSE: Impaired executive function (EF) and decreased cerebral blood flow (CBF) represent persistent sequelae associated with sport-related concussion (SRC). Notably, healthy controls show an exercise-mediated increase in CBF and EF benefit following a single bout of aerobic and/or resistance exercise. Therefore, engaging in sub-symptom threshold aerobic exercise may serve as an intervention to enhance EF and CBF during acute SRC recovery. This study examined the effect of sub-symptom threshold aerobic exercise on EF and CBF during the acute phase of SRC recovery. METHODS: SRC participants (N = 12) completed an initial cycle ergometer assessment to determine their participant-specific work rate associated with symptom exacerbation. On a separate day, a 20-minute cycle ergometry session at 80% of the heart rate associated with symptom exacerbation was completed. Changes in EF were assessed using an oculomotor task (i.e., antisaccades), and exercise-mediated changes in cerebral blood flow were measured using transcranial Doppler ultrasound to estimate middle cerebral artery velocity (MCAv). RESULTS: A reliable 22 ms (SD = 19) reduction in antisaccade RTs was observed from pre- to postexercise assessments (p < 0.01), and this was associated with an exercise-mediated increase in MCAv (p < 0.05). Moreover, an increase in SRC symptomology was not reported during or after the exercise intervention. CONCLUSIONS: Sub-symptom threshold aerobic exercise is associated with improved EF and increased CBF in individuals with acute SRC and suggests the potential of personalized aerobic exercise for post-concussion cognitive rehabilitation. Natural Sciences and Engineering Research Council of Canada (NSERC)
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.007 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.002 | 0.000 |
| Bibliometrics | 0.001 | 0.004 |
| Science and technology studies | 0.000 | 0.003 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".