Exploring Sleep, Energy Balance, and Weight Loss Maintenance After Bariatric Surgery in Adult Females: A Cross‐Sectional Study
Main finding · Associations of sleep with body weight, body composition, appetite and food rewardResult — go to the resultMean difference 0.09Authors' conclusion
Our exploratory results underscore the need to evaluate whether sleep behaviors, including total and REM sleep duration, AHI, and sleep regularity, predict long-term weight loss maintenance after bariatric surgery.
Study context
- Population
- Adult females who underwent bariatric surgery ≥1 year prior to enrollment; age 53.5 ± 9.3 years, BMI 35.5 ± 8.5 kg/m², body fat 44.9% ± 8.6%
- Participants
- 22 female adults
- Exposure
- AHI ≥ 5 vs AHI < 5
- Outcome
- Associations of sleep with body weight, body composition, appetite and food reward
Methodological detailsexploratory, single 7-day study period
- Exploratory
- Single 7-day study period
Main finding
As reported in the abstract
Mean difference
0.09
P = 0.01
- Weight regain relative to nadir postsurgery weight
- 10.6%
- Rapid eye movement (REM) sleep duration vs lower body fat percentage
- r = −0.52, p = 0.02
- Sleep timing variability vs fasting prospective food consumption
- r = 0.44, p = 0.05
- Sleep duration variability vs fasting prospective food consumption
- r = 0.47, p = 0.03
- Greater sleep duration vs lower activity energy expenditure (AEE)
- r = −0.62, p < 0.01
- Greater sleep duration vs explicit liking for sweet foods
- r = 0.45, p = 0.04
Observational data: associations, not effects.
Original publication
Exploring Sleep, Energy Balance, and Weight Loss Maintenance After Bariatric Surgery in Adult Females: A Cross‐Sectional Study. Obesity (Silver Spring). Published 21 January 2026. doi:10.
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