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.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
NONE
Enrollment
100
Participants assigned to the TRE group will have to consume all their daily meals and snacks during a 9-hour window for 12 weeks.
Participants assigned to the control group will have to consume all their daily meals and snacks during a 14-hour window for 12 weeks.
Participants will be provided nutrition education and counselling to follow a diet consistent with the existing guidelines for chronic disease prevention.
Cambridge Clinical Research Center
Cambridge, United Kingdom
RECRUITINGInsulin sensitivity
Insulin sensitivity will be assessed by using a hyperinsulinemic euglycemic clamp procedure in conjunction with infusion of stable isotope tracers.
Time frame: 3 months (pre-post intervention)
24 h glycemic control
Changes in plasma glucose concentration will be assessed during a 24 h feeding study.
Time frame: 3 months (pre-post intervention)
Adipose tissue gene expression
Changes in the expression of genes involved in energy metabolism will be assessed by using quantitative polymerase chain reaction (qPCR).
Time frame: 3 months (pre-post intervention)
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.