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Trial details imported from ClinicalTrials.gov
For full trial details, please see the original record at
https://clinicaltrials.gov/study/NCT03278236
Registration number
NCT03278236
Ethics application status
Date submitted
7/09/2017
Date registered
11/09/2017
Titles & IDs
Public title
Does Time Restricted Feeding Improve Glycaemic Control in Overweight Men?
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Scientific title
Does Time Restricted Feeding Improve Glycaemic Control in Overweight Men?
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Secondary ID [1]
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HREC/17/RAH/307
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Universal Trial Number (UTN)
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Trial acronym
RESHAPE2
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Linked study record
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Health condition
Health condition(s) or problem(s) studied:
Type2 Diabetes
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Insulin Resistance
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Condition category
Condition code
Diet and Nutrition
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Obesity
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Intervention/exposure
Study type
Interventional
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Description of intervention(s) / exposure
BEHAVIORAL - TRF
Experimental: TRF -
BEHAVIORAL: TRF
Participants will be instructed to consume their habitual diet within a self-selected 10 hour period every day.
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Intervention code [1]
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BEHAVIORAL
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Comparator / control treatment
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Control group
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Outcomes
Primary outcome [1]
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Change in glycaemia
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Assessment method [1]
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Change in fasting and postprandial blood glucose following a standard meal test
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Timepoint [1]
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3 hours
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Secondary outcome [1]
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Change in HbA1c
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Assessment method [1]
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Timepoint [1]
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6 weeks
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Secondary outcome [2]
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Change in body weight
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Assessment method [2]
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changes in body weight (kg)
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Timepoint [2]
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6 weeks
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Secondary outcome [3]
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Change in waist and hip circumference
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Assessment method [3]
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changes in waist and hip circumference (cm) and waist:hip ratio
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Timepoint [3]
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6 weeks
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Secondary outcome [4]
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Change in insulin
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Assessment method [4]
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changes in fasting insulin and insulin response to a standard meal
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Timepoint [4]
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3 hours
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Secondary outcome [5]
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Change in gut peptides
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Assessment method [5]
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changes in fasting gut peptides and gut peptide responses to a standard meal
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Timepoint [5]
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3 hours
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Secondary outcome [6]
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Change in cardiovascular risk
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Assessment method [6]
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changes in blood pressure, blood lipids after 6 weeks of intervention
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Timepoint [6]
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6 weeks
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Secondary outcome [7]
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Change in appetite
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Assessment method [7]
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changes in measures of appetite in response to a standard meal
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Timepoint [7]
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3 hours
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Secondary outcome [8]
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Change in food intake
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Assessment method [8]
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Change in quantity and nutritional composition of food intake
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Timepoint [8]
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6 weeks
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Eligibility
Key inclusion criteria
overweight (BMI >25.0 kg/m2) Waist circumference >102 cm
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Minimum age
45
Years
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Maximum age
70
Years
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Sex
Males
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Can healthy volunteers participate?
Yes
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Key exclusion criteria
* Personal history of cardiovascular disease, diabetes, major psychiatric disorders, insomnia
* use of prescribed or non-prescribed medications which may affect energy metabolism, gastrointestinal function, weight or appetite (e.g. domperidone and cisapride, anticholinergic drugs (e.g. atropine), androgenic medications (e.g. testosterone), metoclopramide, orlistat, diuretics)
* use of prescribed glucose-lowering/antidiabetic medication (e.g. metformin, DPP4 inhibitors)
* recent weight change in past 3 months, and/or does not habitually eat breakfast
* uncontrolled asthma, current fever, upper respiratory infections
* individuals who regularly perform high intensity exercise (>2 week)
* current intake of > 140g alcohol/week
* current smokers of cigarettes/cigars/marijuana
* current intake of any illicit substance
* current shift worker
* has donated blood within past 3-months
* unable to comprehend study protocol
* does not own a smartphone
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Study design
Purpose of the study
Prevention
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Allocation to intervention
NA
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Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
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Methods used to generate the sequence in which subjects will be randomised (sequence generation)
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Masking / blinding
Open (masking not used)
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Who is / are masked / blinded?
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Intervention assignment
Single group
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Other design features
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Phase
NA
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Type of endpoint/s
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Statistical methods / analysis
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Recruitment
Recruitment status
Stopped early
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Data analysis
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Reason for early stopping/withdrawal
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Other reasons
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Date of first participant enrolment
Anticipated
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Actual
21/09/2017
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Date of last participant enrolment
Anticipated
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Actual
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Date of last data collection
Anticipated
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Actual
1/12/2017
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Sample size
Target
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Accrual to date
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Final
1
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Recruitment in Australia
Recruitment state(s)
SA
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Recruitment hospital [1]
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Adelaide Medical School - Adelaide
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Recruitment postcode(s) [1]
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5005 - Adelaide
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Funding & Sponsors
Primary sponsor type
Other
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Name
University of Adelaide
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Address
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Country
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Other collaborator category [1]
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Other
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Name [1]
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Salk Institute for Biological Studies
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Address [1]
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Country [1]
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Ethics approval
Ethics application status
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Summary
Brief summary
Obesity is a serious medical condition, the adverse consequences of which include increased risk of cardiovascular disease, diabetes mellitus, reduced fertility and cancer. The economic cost of obesity was placed at $58 billion dollars in Australia in 2008 \[1\]. Studies in mice and non-human primates have shown that moderate caloric restriction (CR) increases lifespan and reduces the incidence of cardiovascular disease, cancer, and type 2 diabetes \[2\]. Reduced risk of chronic diseases is also observed in humans following CR \[3\]. However, daily CR is difficult to maintain long term, since the body defends against weight loss by inducing "metabolic adaptation"\[3\] and altering the hormonal appetite response \[4\]. An emerging number of studies are examining the effects of limiting food intake to prescribed time periods per day, or every other day. Time restricted feeding (TRF) describes a dieting approach where food is available ad libitum, however only for a limited period of time (i.e. 3-12 hours). This pilot study will examine the effects of restricting daily food intake to within a 10 hour period on glycaemic control, body weight and biomarkers of metabolic health for 6-weeks. This study will build on the existing knowledge base in humans as to whether meal timing, rather than caloric restriction per se, is important to provide the stimulus required to improve metabolic health and reduce risk of chronic disease.
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Trial website
https://clinicaltrials.gov/study/NCT03278236
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Trial related presentations / publications
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Public notes
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Contacts
Principal investigator
Name
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Leonie Heilbronn, PhD
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Address
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University of Adelaide
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Country
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Phone
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Fax
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Email
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Contact person for public queries
Name
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Address
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Country
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Phone
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Fax
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Email
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Contact person for scientific queries
Data sharing statement
Will individual participant data (IPD) for this trial be available (including data dictionaries)?
Yes
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What data in particular will be shared?
Food intake data obtained from the MyCircadianApp will be shared between the researchers and the collaborators.
Supporting document/s available: Informed consent form (ICF)
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When will data be available (start and end dates)?
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Available to whom?
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Available for what types of analyses?
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How or where can data be obtained?
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What supporting documents are/will be available?
No Supporting Document Provided
Results publications and other study-related documents
No documents have been uploaded by study researchers.
Results not provided in
https://clinicaltrials.gov/study/NCT03278236