The Effect of Time-Restricted Eating in Cardiometabolic Health

Obesity Clinical Trial

— TRE  

Official title:

The Effect of Time-Restricted Eating in Cardiometabolic Health

Clinical Trial Details — Status: Recruiting

Administrative data

• NCT number: NCT05866406
• Other study ID #: 322459
• Status: Recruiting
• Phase: N/A
• Start date: November 1, 2023
• Est. completion date: August 31, 2028

Study information

• Verified date: November 2023
• Source: Cambridge University Hospitals NHS Foundation Trust
• Contact: Maria Chondronikola
• Phone: 01223746784
• Email: mc2425[@]medschl.cam.ac.uk
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

Time-restricted eating (TRE) is a dietary manipulation that involves restricting food intake to 6-12 h/day with no energy intake the rest of the day. In rodents, TRE improves metabolic function without caloric restriction, potentially by activating nutrient sensing mechanisms and effects on circadian oscillations. However, an understanding of the effect of TRE on cardiometabolic health in people is not clear and few studies have evaluated this issue. Accordingly, the investigators propose to conduct a randomized controlled trial in people with obesity and prediabetes to determine the effect of 9 h TRE for 12 weeks, without a change in body weight, on key metabolic outcomes that are risk factors for cardiovascular disease (CVD): 1) multi-organ insulin sensitivity; 2) 24 h metabolic homeostasis and diurnal rhythm; and 3) adipose tissue and skeletal muscle biology. The proposed studies will elucidate the cardiometabolic implications of TRE in people with obesity and prediabetes.

Recruitment information / eligibility

• Status: Recruiting
• Enrollment: 100
• Est. completion date: August 31, 2028
• Est. primary completion date: June 30, 2028
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 25 Years to 75 Years

Eligibility

Inclusion Criteria:

• must be able to grant voluntary informed consent and comply with the study instructions

• aged 25-75 years

• men and women

• body mass index 27-45 kg/m2

• fasting plasma glucose 5.6-6.9 mmol/L, or 2h oral glucose tolerance test plasma glucose 7.8-11.1 mmol/L or haemoglobin A1C 39-46 mmol/mol or homeostasis model assessment-insulin resistance (HOMA-IR) score =2.73

• self-reported habitual eating period = 13 h per day

Exclusion Criteria:

• shift worker

• fasting >12 h/day more than once a week

• vegan

• > once a week no food intake after ~1800 h

• habitually waking up before ~0400 h and sleeping before ~2100 h

• unstable weight (>5% change the last 2 months)

• Clinical diagnosis of type 1 or 2 diabetes

• Clinical diagnosis of sleep disorder

• Clinical diagnosis of eating disorder

• Clinical diagnosis of cancer in last 5 years

• conditions that render subject unable to complete all testing procedures (including individuals with known allergies or contraindications to the medications used in this study)

• use of medications that affect the study outcome measures or increase the risk of study procedures and that cannot be temporarily discontinued (e.g., steroids, alpha- or beta-adrenergic blockers or agonists, etc.)

• smoking and illegal drug use

• pregnant or lactating

• gastrointestinal or bariatric surgery (except cholecystectomy and appendectomy)

• individuals with electromedical devises

• prisoners

• alcohol abuse

Related Conditions & MeSH terms

• Obesity
• PreDiabetes
• Prediabetic State

Intervention

Behavioral:
• Time restricted eating
Participants assigned to the TRE group will have to consume all their daily meals and snacks during a 9-hour window for 12 weeks.
• Extended eating window
Participants assigned to the control group will have to consume all their daily meals and snacks during a 14-hour window for 12 weeks.
• Healthy diet
Participants will be provided nutrition education and counselling to follow a diet consistent with the existing guidelines for chronic disease prevention.

Locations

Country	Name	City	State
United Kingdom	Cambridge Clinical Research Center	Cambridge

Sponsors (1)

Lead Sponsor	Collaborator
Cambridge University Hospitals NHS Foundation Trust

Country where clinical trial is conducted

United Kingdom, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Insulin sensitivity	Insulin sensitivity will be assessed by using a hyperinsulinemic euglycemic clamp procedure in conjunction with infusion of stable isotope tracers.	3 months (pre-post intervention)
Secondary	24 h glycemic control	Changes in plasma glucose concentration will be assessed during a 24 h feeding study.	3 months (pre-post intervention)
Secondary	Adipose tissue gene expression	Changes in the expression of genes involved in energy metabolism will be assessed by using quantitative polymerase chain reaction (qPCR).	3 months (pre-post intervention)