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The effect of habitual sleep duration on weight loss during a behavioral weight loss intervention in a Mediterranean population

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dc.contributor.authorRodríguez Martín, María
dc.contributor.authorSzczerbinski, Lukasz
dc.contributor.authorGaraulet Aza, Marta
dc.contributor.authorDashti, Hassan S.
dc.contributor.departmentFisiología
dc.contributor.otherFacultades de la UMU::Facultad de Biología
dc.date.accessioned2026-06-04T07:58:55Z
dc.date.available2026-06-04T07:58:55Z
dc.date.copyright© 2025 American Society for Nutrition
dc.date.issued2025-09-19
dc.description.abstractBackground Sleep duration affects metabolic health and regulates appetite, but its role in behavioral weight loss interventions remains unclear as prior studies are limited by small sample sizes, cross-sectional designs, and inconsistent findings. Objectives This study aims to examine the associations between nighttime sleep duration and weight loss during a behavioral intervention in adults with overweight or obesity in Spain. Methods This secondary analysis included adults with overweight or obesity from the Obesity, Nutrigenetics, Timing, and Mediterranean study, a 25-wk behavioral weight loss program. Participants self-reported sleep duration at enrollment and were categorized as short (<7 h), recommended (7–8 h), or long (>8 h) sleepers. Outcomes included percentage of weight loss, clinically meaningful or successful weight loss (≥5% of initial body weight), rate of weight loss (high/rapid rate ≥0.53 kg/wk), and attrition. Associations were examined using logistic regression and linear mixed-effects models adjusted for age, sex, baseline weight, intervention duration, and clinic site. Results Among 3628 participants (mean age 41.2 ± 14.1 y; 77.6% women), 23.7% reported sleeping >8 h, 60.9% reported sleeping 7–8 h, and 15.4% reported sleeping <7 h per night. Long sleepers had significantly lower average weight loss (7.42% of baseline weight) compared with recommended sleepers (7.90%, P = 0.015). Long sleep was associated with 21% lower odds of achieving a weight loss ≥5% of baseline weight [odds ratio (OR): 0.79; 95% confidence interval (CI): 0.66, 0.96], 25% lower odds of rapid weight loss (OR: 0.75; 95% CI: 0.63, 0.89), and 21% higher odds of attrition (OR: 1.21; 95% CI: 1.03, 1.43) compared with recommended sleep. No significant associations were observed for short sleepers. Linear mixed-effects models indicated lower weight loss among long sleepers [β: 0.099; standard error (SE): 0.040; P = 0.015], but not for short sleepers (β: −0.031; SE: 0.048; P = 0.514). Conclusions Habitual long sleep duration is associated with reduced weight loss success and increased risk of attrition in a behavioral weight loss intervention. This trial was registered at clinicaltrials.gov as NCT02829619.
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dc.identifier.citationThe Journal of Nutrition, Volume 155, Issue 11, November 2025, Pages 4060-4064
dc.identifier.doihttps://doi.org/10.1016/j.tjnut.2025.09.010
dc.identifier.eissn1541-6100
dc.identifier.issn0022-3166
dc.identifier.urihttp://hdl.handle.net/10201/236661
dc.languageeng
dc.publisherElsevier
dc.relationThis study was funded by the Spanish Ministry of Science,Innovation and Universities (MICIU/AEI) under grant PID2023-146183OB-I00. MR-M was supported by the MICIU grant PID2020-112768RB-I00. This work was also supported by the NIH (grant number R00HL153795 to HSD).
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/abs/pii/S0022316625005541
dc.rights.accessRightsinfo:eu-repo/semantics/restrictedAccess
dc.subjectWeight loss
dc.subjectObesity
dc.subjectBehavioral intervention
dc.subjectLong sleep
dc.subjectAttrition
dc.subjectSleep duration
dc.subject.odsNo relacionado con ningún objetivo de desarrollo sostenible
dc.titleThe effect of habitual sleep duration on weight loss during a behavioral weight loss intervention in a Mediterranean population
dc.typeinfo:eu-repo/semantics/article
dc.type.versioninfo:eu-repo/semantics/publishedVersion
dspace.entity.typePublicationes
relation.isAuthorOfPublication872e5ce3-d831-4bd6-9c07-040f38085e1b
relation.isAuthorOfPublicationb40dbac2-8d22-43cf-89fb-fd6df8d82836
relation.isAuthorOfPublication.latestForDiscovery872e5ce3-d831-4bd6-9c07-040f38085e1b
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