8352 Association Between Sleep and Physical Activity Among Women with Obesity and Infertility
Notice bibliographique
Résumé
Abstract Disclosure: K. Brûlé: None. F. Jean-Denis: None. M. Belan: None. M. Langlois: None. S. Ruchat: None. J. Baillargeon: Grant Recipient; Self; Ferring Pharmaceuticals. BACKGROUND: Infertility affects up to 15% of couples and a major modifiable risk factor is obesity. Thus, it has been recommended that women with obesity should be assisted to adopt healthy lifestyle behaviors prior to conception. Also, individuals with obesity often present reduced sleep quantity and quality, which could affect their physical activity (PA) practice. On the other hand, PA seems to improve sleep quality. Regular practice of PA could also improve an individual’s functional capacity, and thus could be an objective measure of a person's level of PA. Hence, our study aimed to: 1) compare the sleep quantity of women with obesity and infertility to the Canadian population; and 2) determine the relationship between their PA practice, functional capacity and sleep quantity and quality. Methods: This cross-sectional study is nested within a multicenter randomized controlled trial recruiting women of 18-40 years old with obesity and infertility in Canadian fertility clinics. At their initial research visit, they were assessed for body mass index (BMI), functional capacity (distance at 6-min walk test); total energy expenditure (EE, kcal/day), total PA (steps/day) and time spent in light (min/day) or moderate-to-vigorous physical activity (MVPA, min/day) or sedentarity (min/day) (Fitbit monitor); as well as sleep quality and duration (Pittsburgh Sleep Quality Index questionnaire and Fitbit monitor), and total time asleep per night (Fitbit monitor). For the Canadian population, we used the mean sleep duration of women aged 18-60 years reported in the Canadian Community Health Survey of 2020. Associations were tested using Pearson’s correlations (some measures were made normally distributed by square root transformation). Results: A total of 98 women (mean age = 31.5 years and mean BMI = 39.2 kg/m2) from 5 centers were included, 48% of whom were recruited in Sherbrooke (Qc). Their sleep duration was significantly lower than that of Canadian women (7.2±1.1 vs 8.1 h; p<0.001). Poor perceived sleep quality was negatively associated with EE (r=-0.271; p=0.020) and steps (r=-0.280; p=0.026), but directly with sedentary time (r=0.277; p=0.033). Light PA was negatively associated with measured sleep duration (r=-0.241; p=0.016), but positively associated with measured sleep efficiency (r=0.237; p=0.036). Functional capacity is positively associated with measures of EE, steps and MVPA (r=0.239 to 0.347; p=0.005 to 0.031), and there is a tendency with total time asleep (r=0.238, p=0.061). Conclusion: Canadian women with obesity and infertility have, on average, less sleep time than women in the general Canadian population. Their PA practice is associated with better perceived sleep quality but does not improve their sleep quantity per se. Furthermore, the association between their functional capacity and PA practice suggests that it is a valid objective indirect measure of PA practice. Presentation: 6/1/2024
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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 | 0,002 |
| 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) | 0,004 | 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 ».