M58. Sedentary Behavior Profiles and Obesity Among People With Schizophrenia
Notice bibliographique
Résumé
Background: Sedentary behavior has been identified as a risk factor for cardiovascular disease and mortality independent of physical activity; the purpose of this study was to profile sedentary behavior in a sample of people with schizophrenia and identify relationships between patterns of sedentary behavior and measures of adiposity. Methods: Participant waist circumference (WC) and body mass index (BMI) were measured at intake. Participants subsequently wore accelerometers for 7 days. Valid wear time was considered to be 10 hours or more on at least 4 days. Sedentary behavior was considered any period with less than 100 counts per minute, for at least 1 minute. A profile of sedentary behavior was assessed to identify volume of sedentary time, the daily average duration of sedentary bouts and frequency of varying sedentary bout lengths. Pearson correlations were calculated between sedentary behavior and health variables for the full sample, and stratified by sex. Hierarchical regression models were calculated for WC and BMI, first controlling for age, sex, and chlorapromazine equivalents, followed by moderate to vigorous physical activity (MVPA) and accelerometer wear time, and finally sedentary variables. Results: One hundred thirty participants enrolled in the study, of which 113 completed the study and 101 wore their accelerometers for a sufficient amount of time. Mean (SD) daily sedentary time was 455.8 (125.3) minutes, or 53% of daily accelerometer wear time. Sedentary time was broken up by 79.6 (17.4) breaks in sedentary time. The average bout of sedentary behavior lasted 5.9 (1.7) minutes. Sedentary bouts under 5 minutes were most common across the sample, mean (SD) = 53.57 (15.5) per day, followed by bouts lasting 5 to <10 minutes, 13.49 (4.5) per day. Sedentary bouts longer than an hour occurred, on average, .4 (.4) times per day. WC was significantly related to total sedentary breaks r = .20, P = .04, and average sedentary bout length r =.25, P = .015, however BMI was not. When stratified by sex, WC was only related to the average sedentary bout length in men, r = .40, P = .002, whereas there was no relationship in women. However, in the regression models no sedentary behavior variable was associated with WC or BMI after controlling for other variables such as MVPA. Conclusion: To date, this is the largest reported sample of objectively measured sedentary behavior data among people with schizophrenia we are aware of. This study provides a comprehensive profile of sedentary behavior patterns in this sample. Overall sedentary time in this sample was lower than what has been previously reported by studies using other objective measures. There was little evidence that sedentary behavior was associated with measures of adiposity. Further assessment of sedentary behavior and its relationship with other metabolic and cardiovascular health outcomes is warranted. Funding by a Canadian Institutes of Health Research operating grant.
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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 | 0,000 | 0,001 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,001 | 0,001 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| 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 ».