Effect of Weather, School Transport, and Perceived Neighborhood Characteristics on Moderate to Vigorous Physical Activity Levels of Adolescents From Two European Cities
Bibliographic record
Abstract
The main goal of this study is to analyze the influence of several environmental factors (temperature, precipitation, mode and duration of school transport, perception of physical activity [PA] opportunities, and perceived neighborhood walkability) on adolescent’s daily moderate to vigorous physical activity (MVPA) levels of two European mid-sized cities. Data were collected from a sample of 829 adolescents (49.7% Spanish; 55.2% females; 14.33 ± 0.73 years). Daily meteorological data were collected for the valid days for each subject and MVPA levels were assessed with Actigraph GT3X accelerometer during seven consecutive days. Data were analyzed using multilevel modeling. Warmer weather ( p < .01), lower levels of precipitation ( p < .05), and use of active school transport ( p < .05) were significantly associated with higher MVPA levels. Environmental neighborhood perception did not show significant influence. Further efforts should be carried out to increase PA opportunities during colder periods, rainy days, and to promote the use of active transport
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.001 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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".