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This study examined the effects of intermittent fasting on energy balance and related health outcomes. It included people with a body mass index of 20.5 kg/m2 or greater, whose weight had been stable for the past three months, and who could comply with the study protocol. It was conducted as a non-phase study and has been completed.
The summary above is a plain-language rendering of the official record. The original English title is shown for reference.
Criteria are reproduced from the ClinicalTrials.gov record in the original English. Only the trial team can determine eligibility.
Inclusion Criteria: * Body Mass Index of 20.5 kg/m2 or greater * Stable body weight for preceding three months (\<3 kg increase or decrease) * Able and willing to safely comply with study procedures * Be able to attend the laboratory and willing to participate in necessary protocols * Be willing to undertake the durations of fasting required by the study * Have the capacity and willingness to provide informed consent (oral and written) Exclusion Criteria: * Have a body weight greater than 120 kg * Will be undertaking any other fasting practices during their participation in the study (can enrol once stable weight returns after fasting is completed) * Currently engaged in or planning to engage in another weight management programme (e.g. weight watchers) or exercise programme (e.g. hypertrophy training or marathon training) during the study * Have previously suffered or are suffering from an eating disorder as assessed using the Eating Disorder Examination Questionnaire, Version 6.0 (Fairburn \& Beglin, 2008) * Have been diagnosed with either type 1 or type 2 diabetes * Undertaking any form of medical treatment which may interfere with study variables (e.g. chemotherapy, liposuction, taking metformin, statins/other lipid-lowering medications) * Are peri-menopausal or menopausal (absence of menses for 3-24 months) * Pregnant, recently pregnant (within last 6 months), planning to become pregnant (within next six months), or currently breastfeeding. * Have donated more than 500 ml of blood in the last three months before the initial laboratory visit * Lack of metal capacity or language skills to independently understand/follow the study protocol * Physical disability which impacts study variables or ability to independently follow study protocol (e.g. paralysis) * Cannot consume test meals due to intolerances (i.e. lactose) * Report medical contraindications on the 'Physical Activity Readiness Questionnaire' and are unable to obtain medical approval for the treadmill test.