Impact of Intermittent Fasting on Sleep and Quality of Life
Impact of Intermittent Fasting on Sleep and Quality of Life Among Healthy Adults
Université Libre de Bruxelles
36 participants
Mar 17, 2025
INTERVENTIONAL
Conditions
Summary
The goal of this clinical trial is to investigate the impact of intermittent fasting on sleep, quality of life and fatigue among healthy volunteers. The main questions aim to answer: Whether intermittent fasting would allow participants to experience an improvement in their sleep quality, duration and latency? Whether intermittent fasting would ameliorate participants' quality of life and reduce chronic fatigue symptoms? Researchers will compare the two most prevailing fasting windows of intermittent diet including an early morning feeding window (8 a.m.-4 p.m.) and a late feeding window (12 p.m.-8 p.m.) to see if there is a difference among these feeding windows on sleep and quality of life. Participants will: * Be divided into two groups (group A and group B) that will alternate their fasting windows. * Group A will start with intermittent fasting over a feeding period from 12 p.m. to 8 p.m. for one month, then a two weeks period of usual eating habits (washout period) and finally one month of intermittent fasting with a feeding period from 8 a.m. to 4 p.m. * Group B will follow intermittent fasting over a feeding period from 8 a.m. to 4 p.m for one month, then a two weeks period of usual eating habits (washout period) and finally one month of intermittent fasting with a feeding period from 12 p.m. to 8 p.m. * At enrollment, at the end of each month of intermittent fasting and at the end of washout period participants will be asked to complete some questionnaires and will be submitted to anthropometric measurements using impedance scales. * Participants will be asked to complete an electronic 24 hour recall diary using the Automated Self-Administered 24h Dietary Assessment (ASA24) Tool software once per week every week during study.
Eligibility
Inclusion Criteria4
- Healthy subjects
- Adult subjects - age: between 18 and 65 years old
- Subjects with a BMI between 18.5 and 29.9 kg/m\^2
- Male and female subjects
Exclusion Criteria18
- Subjects < 18 years old
- Subjects with Diabetes Mellitus (type 1 and type 2)
- Pregnant and/or breastfeeding and/or postpartum women
- Underweight subjects (BMI < 18.5)
- Obese subjects (BMI > 30)
- Subjects with confirmed sleep disorders (requiring CPAP or sleep medication (sleeping pills))
- Subjects with renal failure (GFR < 30 ml/min/1.73 m\^2) or liver disorder
- Subjects with serious cardiovascular, respiratory, neurological, or metabolic medical conditions
- Subjects with malignant tumors
- Subjects with a serious mental disorder requiring medication (e.g., antidepressants or anxiolytics)
- Subjects with eating disorders
- Subjects who have undergone major surgery or have been hospitalized due to major medical condition (surgery, stay in intensive care) within the last one year
- Subjects who have lost more than 10% of their body weight within the last one year
- Subjects actively participating in a weight-loss program
- Subjects with alcohol use disorder (maximum 10 standard alcoholic drinks per week, 2 standard alcoholic drinks per day)
- Subjects with substance use disorder
- Subjects unable to provide informed consent
- Subjects who do not participate simultaneously in another clinical trial
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Interventions
Intermittent fasting is an eating pattern that consists of alternating periods of fasting of varying duration with periods of eating. In the present study, all participants will follow a time-restricted feeding/eating (TRF/E) that restricts all dietary intake to an 8- hour daily eating window. There will be two different feeding periods. The first window will allow a feeding period from12 p.m. to 8 p.m. (late feeding window).
Intermittent fasting is an eating pattern that consists of alternating periods of fasting of varying duration with periods of eating. In the present study, all participants will follow a time-restricted feeding/eating (TRF/E) that restricts all dietary intake to an 8- hour daily eating window. There will be two different feeding periods. The second window will allow a feeding period from 8 a.m. to 4 p.m (early feeding window).
Locations(1)
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NCT06959069