An examination of the brain trauma in Novice and Midget ice hockey: Implications for helmet innovation
Bibliographic record
Abstract
Ice hockey helmets are currently not designed for youth players, but rather reduced in size to fit smaller heads. As a result they are not as effective for youth protection. In order to target youth specific helmet protection and innovation, there needs to be an understanding of what characteristics contribute to brain trauma in youth ice hockey. The purpose of this research was to compare the frequency and magnitude of head contact events that occur in Novice and Midget ice hockey age categories. 30 Novice and 30 Midget youth boys’ ice hockey games were analyzed to determine the frequency of event type, velocity of contact, and location of contact for head impacts. These events were then reconstructed in laboratory using physical and finite element modelling to determine the maximum principal strain of the events. The results identified that the Novice category helmet design should be focused on reducing impact from hard surfaces, while Midget focused on impacts from collisions with players and the glass.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.003 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.002 | 0.000 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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 source (direct Gemma or distilled Codex), 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".