Abstract P246: Determinants of Remission of Overweight Status in Youth
Notice bibliographique
Résumé
Introduction and hypothesis: Spontaneous remission to normal weight status occurs in ~10-20% of overweight youth. The factors that predict remission, particularly modifiable factors such as diet and physical activity (PA) are poorly understood. We hypothesized that the time spent in moderate to vigorous physical activity (MVPA), high fitness and better diet quality would be associated with an increased likelihood of remission to normal weight status among overweight youth. Design and Methods: This was a three year prospective cohort study of 114 youth aged 9-15 years who were overweight or obese (International Obesity task Force (IOTF) cut-points) at baseline. We performed a series of regression analyses to test for predictors of remission to normal weight status at the 3-year follow up visit. The primary exposure variables were accelerometer (Actical) determined physical activity (PA) intensity, cardiorespiratory fitness assessed with a 20m shuttle run and diet quality determined from a web-based 24-hr recall tool that estimated diet quality based on meeting recommendations for daily intake of food groups. The primary outcome measure was remission to normal weight status defined as a BMI within the “healthy weight” range for age and sex in year 3 of the cohort study according to IOTF cut-points. We also tested for differences in BMI Z-score and systolic blood pressure (SBP) between youth that experienced remission and those that didn’t. We adjusted for the potential confounding effects of sedentary time, age and sex. Results: Among the 114 overweight youth studied (12 ± 2 years; BMI Z score = 1.55 ± 0.35), 18 (16%) returned to normal weight status at year 3. Remission did not occur in any youth considered obese (BMI [[Unable to Display Character: ˃]] 95th percentile) at baseline. Neither MVPA nor dietary quality was associated remission. However, remission was associated with a lower BMI Z score at baseline (1.31 ± 0.15 vs. 1.60 ± 0.35, p < 0.05) and a higher cardiorespiratory fitness (shuttle run score = 6.4 ± 2.3 vs. 4.9 ± 1.9, p < 0.05). The odds of remission were 4-fold higher (OR: 4.2 95% CI=1.04-16.7) among youth in the two upper quintiles of cardiorespiratory fitness compared to those in the lowest quintile. Despite a significant decline in BMI Z score over 3 years (-0.67 ± 0.53 vs. -0.019 ± 0.23, p < 0.05) in youth that experienced remission, no differences in SBP were observed compared to youth that remained overweight. Conclusions: Remission to normal weight status was observed in 16% of youth who were overweight at their initial assessment. Obesity and low cardiorespiratory fitness reduced the likelihood of spontaneous remission to normal weight status in overweight youth. The identification of BMI and fitness thresholds at which spontaneous remission is unlikely to occur will tailor interventions to youth with the greatest need to improve lifestyle behaviours, weight status, and overall well-being.
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction machine sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Le volet Gemma est une étiquette directe du modèle pour chaque travail de la base, lue sur la notice réduite au titre. Le volet Codex est un classifieur appris des 10 348 étiquettes directes de Codex et calibré sur les taux pondérés de l'échantillon; les champs sans appui suffisant ne portent aucun appel Codex. Le mode candidate est l'union des deux volets; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont pas des étiquettes humaines.
Scores du classifieur distillé par catégorie (deux têtes)
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,001 | 0,002 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,001 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,001 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,001 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,003 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule source (Gemma direct ou Codex distillé), pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».