Investigation of Modern Basketball Movement Demands by Film Analysis to Inform Training Interventions
Bibliographic record
Abstract
The feasibility and utility of film-analysis for studying basketball movements completed by NBA guards in the context of performance training was examined.The action type, plane of movement and estimated joint actions of ten NBA guards in five 4th quarter performances were characterized using count data. Athletes made 0.74 + 0.15 movements of interest per minute of performance. Four movements; Change of Direction, Single Leg Bound, Single Leg Jump, and Forward Curvilinear Acceleration, comprised > 80% of observations. Movements were primarily in the sagittal plane. Ankle Plantar Flexion, Knee Flexion, Hip Flexion, and Hip External Rotation were frequently observed. Principal Component Analysis indicated Flexion actions at the hip, knee and ankle were highly linked, while external rotation of the hip was independently important. The film analysis techniques were successfully utilized. Variation in exercise selection for the features of movement plane and joint action may better prepare athletes to meet demands.
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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 | 0.004 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.004 | 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".