Countermeasures to Circadian Misalignment
Time-restricted Feeding to Mitigate Metabolic Impairments During Circadian Misalignment
Colorado State University
32 participants
Jul 7, 2021
INTERVENTIONAL
Conditions
Summary
Insufficient sleep and circadian misalignment are independent risk factors for the development of obesity and diabetes, yet few strategies exist to counter metabolic impairments when these behaviors are unavoidable. This project will examine whether avoiding food intake during the biological night can mitigate the impact of circadian misalignment on metabolic homeostasis in adults during simulated night shift work. Findings from this study could identify a translatable strategy to minimize metabolic diseases in populations that include anyone working nonstandard hours such as police, paramedics, firefighters, military personnel, pilots, doctors and nurses, truck drivers, and individuals with sleep disorders.
Eligibility
Inclusion Criteria5
- 18-35 old; men and women; equal numbers of women and men will be included.
- Body Mass Index (BMI) between 20.0 and 24.9 ("normal" weight).
- Physical activity history: inactive to habitual moderate physical activity level
- Sleep/wake history: habitual sleep duration between 7-9.25 hours.
- Altitude history: Potential subjects must have lived at Denver altitude or higher for at least 3 months prior to inpatient stay.
Exclusion Criteria5
- Any clinically significant medical, psychiatric, or sleep disorder
- Use of prescribed medications/supplements/illicit drugs within one month prior to study
- History of shift work in year prior to study, or travel more than one time zone in three weeks prior to study. \[NOTE: Subjects can be studied at a later date.\]
- Women with history of prior gynecological pathology, <1 year post-partum, breast-feeding and/or pregnant.
- Non-English speakers will be excluded, as we do not have access to a translator who could rely accurate information to the participant for the consent or throughout the study.
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Interventions
Each subject will participate in both conditions (CM and CM+TRF)--one in which food is allowed during the nighttime period and one in which food will be restricted to the daytime only. Food intake will be matched across conditions and designed to keep participants weight stable.
Healthy lean subjects will undergo circadian misalignment induced using a simulated night shift-work protocol in both conditions of the study. Each condition will last approximately 6 days.
Locations(1)
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NCT04966351