Examining the effects of a 12-week lifestyle modification intervention on physical activity and related psychological outcomes among overweight and obese adolescent girls
Bibliographic record
Abstract
BACKGROUND: Adolescents typically experience sharp declines in physical activity. This is especially true for overweight and obese girls, whose efforts are often thwarted by feelings of guilt, shame, and failure. Therefore, interventions for improving physical activity behaviours among this population should also aim to promote favorable psychological outcomes. PURPOSE: Guided by Self-Determination Theory (SDT), this study examined the effects of a 12-week lifestyle modification intervention for overweight and obese adolescent girls on physical activity and related psychological variables. METHODS: Participants (N=54; mean age =14.8±2.25 years) were randomized to one of three groups; two intervention groups (G1 n= 24; G2 n=23) which undertook a 12-week intervention including supervised exercise, dietary counseling and behaviour-management, and one control group (Con n=7). Intervention groups differed by the type of dietary program followed. Leisure time physical activity (LTPA), exercise motivation, perceived competence, and physical self-perceptions were measured at 0 and 12 weeks. RESULTS: Significant time by group interactions were observed for LTPA (F(1,51)=4.3, p=0.019), physical self-worth (F(1,51)= 9.03, p
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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) | 0.001 | 0.001 |
| 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 | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.003 | 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".