Circadian Rhythms in Postmenopausal Women
Julie Pendergast
Summary
This is a randomized, parallel two-arm clinical trial design to study the efficacy of time-restricted feeding on metabolic risk in postmenopausal women, who may be particularly vulnerable to disruption of circadian eating rhythms and the associated metabolic dysfunction. It is hypothesized that time-restricted feeding will improve insulin sensitivity, glucose tolerance, body weight, and other metabolic parameters in metabolically-unhealthy postmenopausal women.
Description
This is a randomized, parallel two-arm clinical trial design to study the efficacy of time-restricted feeding (TRF) on metabolic risk in postmenopausal women. Data will be collected for 18 weeks. Baseline food timing, activity/sleep, and metabolic parameter (OGTT, body composition, anthropometric measurements, lipid panel, inflammatory markers) data will be collected in the first two weeks (baseline). Subjects will then be randomized to the TRF intervention or no TRF for 16 weeks. Subjects in the TRF group will be educated about the health benefits of TRF. Then each subject in the TRF group wi…
Eligibility
- Age range
- 45–65 years
- Sex
- Female
- Healthy volunteers
- Yes
Inclusion Criteria: * postmenopausal women * age 45-65 years * prediabetic or have at least 2 features of metabolic syndrome Exclusion Criteria: * on hormone therapy * diabetes * heart disease * alcohol consumption of \>2 drinks per day * significant circadian disruption * having care-taking responsibilities that significantly affect sleep * shift work or irregular lifestyle * uncontrolled sleep apnea or other uncontrolled sleep disorder * extreme early or late chronotypes * significant psychiatric disorders * taking ADHD medications * diagnosed dysregulated eating behaviors * smoking \>5 c…
Interventions
- BehavioralTime-Restricted Feeding (TRF)
Subjects will be educated about the health benefits of time-restricted feeding (TRF). Each subject in the TRF group will self-select a 10 hour (10h +/- 1hr) window aligned with their active phase during which they will consume all daily calories. Subjects will text the time of their first and last daily meals for the duration of the study.
Location
- University of KentuckyLexington, Kentucky