An interventional study of Regular meal pattern and Irregular meal pattern in Metabolic Disturbance and Obesity, sponsored by University of Nottingham. Completed at 1 site in United Kingdom. Open to participants aged 18 Years to 45 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2022-11-02.
Sponsored by University of Nottingham · Not applicable, Interventional, and Prevention
In this study we will compare the effect of two different meal patterns. Firstly, participants will consume a diet providing their estimated energy requirement for a 7 day standardisation period (6 meals per day). After a one day laboratory visit, this will be followed by a 14 day intervention period when participants will randomly follow a regular meal pattern (6 meals/d) or an irregular meal pattern (3-9 meals/d). Following a further laboratory visit day, they will then consume the previous standardisation diet for a further 3 days. The energy intake provided will be calculated to provide less energy than subjects are using which may result in approximately 2kg of weight loss. Participants will attend a screening visit in which they will complete questionnaires on medical health, eating habits and physical activity. In the laboratory visit, participants will be fasting and for 3 h after intake of a test drink, measurements will be taken of energy expenditure, fasting glucose, fasting gut hormones, fasting lipids and fasting insulin. A test meal will be offered. A questionnaire of subjective appetite ratings will be assessed while fasting, after the test drink, after the test meal, and during the intervention. Continuous interstitial glucose monitoring will be undertaken during the whole study period, Core body temperature will be measured before and after the intervention period. Also, wrist temperature will be measured during the whole study period.
Experimental protocol:
28 women who are a healthy weight or overweight (aged 18-45 years) will be recruited to a randomized parallel trial to follow one of two 14-d hypo-energetic diets. Firstly, participants will consume a diet providing their estimated energy requirement (6 meals/day) for a 7 day standardisation period. After a one day laboratory visit, this will be followed by a 14 day intervention period when participants will follow a regular meal pattern (6 meals/d) or an irregular meal pattern (3-9 meals/d) (energy deficit of 800kcal/ 24h in both diets) (identical foods provided on both interventions whilst otherwise free living). Following a further laboratory visit day, they will then consume the previous standardisation diet providing their estimated energy requirement (6 meals/day) for a further 3 days. All foods to be consumed during the study will be provided to free of charge. These will comprise foods commonly consumed in the British diet and will be consumed in amounts designed to provide 800kcal/24h less than estimated energy requirements in the intervention period. Participants will attend the laboratory visits fasting and a blood sample will be obtained for fasting glucose, insulin and lipids. A test drink will then be given and over the following three hours measurements will be taken of energy expenditure (TEF). An ad libitum pasta test meal will be offered three hours after the test drink has been given. Subjective appetite ratings will be assessed while fasting, after the test drink, after the ad libitum meal, and during the intervention. Continuous interstitial glucose monitoring will be undertaken throughout the study. Ambulatory activity pattern measurement will be assessed in the intervention period. Core body temperature will be measured during the last 3 days of the first standardisation period, and during the final three standardisation days. Peripheral body temperature will be measured throughout the study period using a small i- button secured to the wrist. The study will commence at the early phase of the menstrual cycle (days1-7). A constant sleep-wake (and light exposure) routine will be followed for the whole study period which will be assessed by a written questionnaire form
University of Nottingham is the lead sponsor of 455 studies on the registry; 77 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Exclusion Criteria:
Participants will follow a regular meal pattern for 14 days
Other: Regular meal pattern
Participants will follow an irregular meal pattern for 14 days
Other: Irregular meal pattern
6 meals every day
It consists of consuming a different number of meals every day (between 3 and 9).
Change from baseline thermic effect of food in kcal at 2 weeks intervention
Indirect calorimetry (GEM system; Europa Scientific Ltd.) will be used to determine the resting energy expenditure (REE) and thermic effect of food (TEF). REE will be measured in the fasted state for 20 min. The TEF will be measured for periods of 15 min at 30-min intervals during the 3 h after test drink (milkshake) consumption.
Time frame: Over 3 hours for 2 days
Change from baseline body Weight in kilograms at 2 weeks intervention
Body weight
Time frame: 1 day before intervention and 1 day after intervention
Change in subjective appetite
a booklet will be given to record the subjective appetite (hunger, fullness and desire to eat) using visual analogue scales (VAS) before and after each single meal on: 1. The last day of the pre-standardization period, 2. The first day of the post-intervention period. 3. Pre-lab visit day. 4. Post-lab visit day. 5. Day 7 during the intervention period. 6. Day 14 during intervention period.
Time frame: 2 days in lab visit, 1 day pre-intervention standardization period, 1 day post-intervention standardization period and 2 days in intervention period
Continuous interstitial glucose
Continuous interstitial glucose will be undertaken using a continuous glucose monitor (CGM) the FreeStyle Libre System during the whole study period
Time frame: 26 days
Change from baseline fasting glucose in mmol/L at 2 weeks intervention
A fasting blood samples will be taken, just before ingestion of the test drink to assess the mean of the fasting sample of serum glucose
Time frame: 1 day before intervention and 1 day after intervention
Change from baseline fasting insulin in mlU/L at 2 weeks intervention
A fasting blood samples will be taken, just before ingestion of the test drink to assess the mean of the fasting sample of serum insulin
Time frame: 1 day before intervention and 1 day after intervention
Change from baseline fasting lipids in mmol/L at 2 weeks intervention
A fasting blood samples will be taken, just before ingestion of the test drink to assess the mean of the fasting sample of serum total cholesterol, HDL cholesterol, LDL cholesterol and triacylglycerol.
Time frame: 1 day before intervention and 1 day after intervention
Change from baseline fasting glucagon-like peptide1 in pM at 2 weeks intervention
A fasting blood samples will be taken, just before ingestion of the test drink to assess the mean of the fasting plasma glucagon-like peptide1(GLP-1).
Time frame: 1 day before intervention and 1 day after intervention
Change from baseline fasting peptide YY in pg/ml at 2 weeks intervention
A fasting blood samples will be taken, just before ingestion of the test drink to assess the mean of the fasting plasma peptide YY (PYY).
Time frame: 1 day before intervention and 1 day after intervention
Change from baseline fasting ghrelin in pg/ml at 2 weeks intervention
A fasting blood samples will be taken, just before ingestion of the test drink to assess the mean of the fasting plasma ghrelin.
Time frame: 1 day before intervention and 1 day after intervention
Change from baseline core body temperature in Celsius at 2 weeks intervention
Core temperature will be assessed using an ingestible telemetry pill and associated monitor (e-Celsius Performance pill and monitor e-Celcius™ BodyCap).
Time frame: 3 days in pre and post intervention
Peripheral wrist temperature in Celsius
Wrist temperature will be assessed through a wireless iButton data logger
Time frame: 26 days
Plan to share: Yes — Only anonymised individual personal data will be shared, upon specific request from other researchers, for example, in order to undertake a meta-analysis
Supporting information: Study protocol, Sap, Icf, Csr, Analytic code
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University of Nottingham