The Impact of Morning or Evening Exercise on Food Intake
NCT ID: NCT04720950
Last Updated: 2021-01-22
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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UNKNOWN
NA
12 participants
INTERVENTIONAL
2020-12-01
2021-05-31
Brief Summary
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Multiple factors influence the effect of exercise on appetite regulation including body fat , gender, intensity and duration of exercise and levels of habitual physical activity . However, recently interest has grown around the impact time-of-day of exercise may have on appetite regulation . Subjective feelings of hunger follow a strong diurnal pattern, with feelings of hunger peaking in the evening and appearing lowest in the morning . Evening energy intake has been associated with increased total energy intake and body mass index Evening exercise could potentially counteract or lessen the evening hunger sensations and therefore reduce evening and total energy intake. The aim of this study is to investigate any changes in total energy intake, distribution of energy intake, and food preference on the day of and 24 -hours after a bout of moderate-intensity exercise completed in the morning or evening in a group of physically inactive adults. A total sample of 12 physically inactive adults aged 18-60 will be recruited on to the study. The study will take the form of a two-armed randomised controlled crossover trial consisting of two 48-hr overnight stays in the Human Intervention Studies Unit (HISU) at Ulster University, Coleraine, Northern Ireland. The participant information sheet will focus on the effect of morning and evening exercise on ambulatory blood pressure and exercise-induced feeling states to prevent the participants' knowledge of the true purpose of the study from influencing their feeding behaviours. Ambulatory blood pressure will be monitored for at least 24 hours after the exercise session and participants will be asked to complete questionnaires of exercise induced feeling states immediately before and after each exercise session. Participants will be briefed on the true purpose of the study following the study completion. During the visits, participants will be asked to perform 1 hour of exercise at 70% of their maximal heart rate on a motorised treadmill between either 0800-1000 or 1800-2000 on the first full day of the study appointment. Food will be provided ad libitum for the duration of the study. All food intake will be noted and covertly weighed and directly observed through security cameras in the HISU dining room and lounge areas to measure food-related behaviours, such as grazing or bingeing. A 24 hour dietary recall will be conducted at the end of each study appointment to validate recall against observed intake.
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Detailed Description
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Conditions
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Study Design
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RANDOMIZED
CROSSOVER
PREVENTION
SINGLE
Study Groups
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Morning exercise
1 hour of exercise completed between 0800-1000
Exercise
1 hour of exercise on a motorised treadmill at 70% maximal heart rate
Evening exercise
1 hour of exercise completed between 1800-2000
Exercise
1 hour of exercise on a motorised treadmill at 70% maximal heart rate
Interventions
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Exercise
1 hour of exercise on a motorised treadmill at 70% maximal heart rate
Eligibility Criteria
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Inclusion Criteria
* Able to perform 1 hour of moderate-intensity exercise on a treadmill.
Exclusion Criteria
* Have significant dysphagia, gastric outlet obstruction, or any other factor which prevents the consumption of a meal.
* Have a significant food allergy or dietary restriction.
* Have a systemic or gastrointestinal condition that may affect food intake or preference.
* Taking medication or supplements that affect energy intake or appetite.
* Taking medication that affects blood pressure or heart rate.
* Have an irregular sleep or shift work patterns.
* Travel across \> one time zone in the last month.
* Fitted with pacemaker
* Smokes or uses vaping products
18 Years
60 Years
ALL
Yes
Sponsors
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University of Ulster
OTHER
Responsible Party
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Locations
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Human Intervention Studies Unit
Coleraine, N.Ireland, United Kingdom
Countries
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Central Contacts
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Facility Contacts
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Other Identifiers
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FCBMS-20-061
Identifier Type: -
Identifier Source: org_study_id
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