Longitudinal association between the social context of physical activity and moderate-to-vigorous physical activity
Bibliographic record
Abstract
Background: Co-participating in physical activity (PA) with others is associated with higher levels of PA in youth. However, PA can occur in several social contexts and few researchers have longitudinally compared associations of different social contexts with moderate-to-vigorous physical activity (MVPA) or whether having many people available to participate in PA with is associated with greater MVPA. We examined whether changes in different social contexts of PA and variety of PA companions are associated with changes in MVPA across elementary/middle school (Grades 5-8) and secondary school (Grades 8-11). Methods: Youth (N=938) completed questionnaires tri-annually from Grades 5-11 on weekly frequency of PA participation in five social contexts (i.e., with teammates, siblings, friends, parents/grandparents, or alone) and number of days/week meeting recommended levels of MVPA (i.e., ?60 minutes/day). Unstandardized path coefficients (B) within piecewise latent growth models are interpreted as change in MVPA for every one unit change in the social context of PA (multivariate model) or variety of PA companions (univariate model). Results: Declines in variety of PA companions was associated with decreases in days/week meeting MVPA recommendations in elementary/middle (B=1.53, SE=0.60, p
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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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 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".