Effects of a time-restricted eating intervention on sleep and body composition in adults with obstructive sleep apnea: A randomized cross-over clinical trial.

OBJECTIVES

This study aimed to evaluate the effects of an 8-h Time-Restricted Eating (TRE) intervention over 12 weeks on weight loss, body composition, and sleep in adults with Obstructive Sleep Apnea (OSA).

METHODS

A randomized crossover clinical trial was conducted. Participants aged 30-65 years with a Body Mass Index (BMI) ≥30 kg/m2, diagnosed with OSA, of both sexes, with eating windows from 11 to 14 h were included. The participants were randomized into an 8-h TRE intervention (meals between 11 AM and 7 p.m.) or control group (eating window >10 h and nutritional guidance). Twelve participants completed the intervention. Measurements included body weight, height, waist and neck circumference, and body composition (bioelectrical impedance). Sleep parameters were assessed using a Biologix® portable sleep monitor and questionnaires.

RESULTS

The average age of the sample was 44.6 ± 7.84 years, 50% female. Adherence to the TRE intervention was 4.2 days per week. No significant effects of TRE were observed on body weight or anthropometric outcomes, body composition, or sleep parameters.

CONCLUSION

The findings of this study suggest that a 12-week 8-h time-restricted eating intervention was not associated with reductions in body mass or body composition and sleep parameters evaluated by a portable monitoring device. Brazilian Registry of Clinical Trials (REBEC) - protocol RBR-9rh56ph.