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Deficiency; CalorieNCT02696772

Effect of 24 h Severe Energy Restriction on Appetite Regulation and Ad-libitum Energy Intake

A study testing Energy intake in people with Deficiency; Calorie, run by Loughborough University.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

Long term maintenance of weight loss is generally poor, which is at least partly due to increased feelings of hunger associated with restricting what can be eaten. Intermittent severe energy restriction is a novel dietary strategy that requires individuals to consume a very-low energy diet for 1-4 days per week… Read more about this study

Who is it for?
Ages 18 to 50 yearsHealthy volunteers can take part
Conditions the study is for
Deficiency; Calorie
What is being tested?
Energy intake
Could I receive a placebo?
No, everyone receives an active treatment
How many people
18 participants
Where
No sites listed yet
Study dates
Oct 2013to Sep 2015
Phase
Interventional
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 50 years
  • All sexes
  • Healthy volunteers accepted
  • Adult

Who may be able to join

  • non-smoker, not currently dieting, weight stable for >6 months (self-reported), no known history of cardiovascular or renal disease.

Who cannot join

  • food allergies, dislike or intolerance of study foods and drinks, irregular eating patterns, use of medication that could influence hormone concentrations, excessive alcohol consumption (>4 units/day), intensive training schedule (>10 h/week)

About this study

Official title: Effect of 24 h Severe Energy Restriction on Appetite Regulation and Ad-libitum Energy Intake in Lean Males and Females

Long term maintenance of weight loss is generally poor, which is at least partly due to increased feelings of hunger associated with restricting what can be eaten. Intermittent severe energy restriction is a novel dietary strategy that requires individuals to consume a very-low energy diet for 1-4 days per week, allowing normal feeding patterns to be adopted on the other days in the week. However, the effect of a consuming a very-low energy diet on appetite regulation, which might represent a key marker of long-term adherence to dieting, has not been determined. This study aimed to assess the effects of severely restricting energy intake for 24 h on markers of appetite regulation, energy balance and metabolism compared to an adequate energy trial.

Being tested
Energy intake

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Energy intakeOther

Study groups in NCT02696772
Study groupRoleWhat they receive
Energy balanceExperimentalIntervention day diet containing 100% of estimated energy requirements
Receives: Other: Energy intake
Energy restrictionExperimentalIntervention day diet containing 25% of estimated energy requirements
Receives: Other: Energy intake

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Ad-libitum energy intake

    Measured at laboratory-based meals and weight food records

    Measured: 48 hours

  2. Subjective appetite

    Measured using visual analogue scales

    Measured: 48 hours

  3. Plasma acylated Ghrelin

    Measured using ELISA from venous blood samples

    Measured: 24 hours

  4. Plasma active glugagon-like peptide 1

    Measured using ELISA from venous blood samples

    Measured: 24 hours

Secondary outcomes (6)
  1. Plasma insulin

    Measured using ELISA from venous blood samples

    Measured: 24 hours

  2. Plasma glucose

    Measured using colorimetric assay from venous blood samples

    Measured: 24 hours

  3. Plasma Non-esterified Fatty acids

    Measured using colorimetric from venous blood samples

    Measured: 24 hours

  4. Energy expenditure

    Measured under resting conditions using indirect calorimetry

    Measured: 24 hours

  5. Fat oxidation

    Measured under resting conditions using indirect calorimetry

    Measured: 24 hours

  6. carbohydrate oxidation

    Measured under resting conditions using indirect calorimetry

    Measured: 24 hors

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted2 Mar 2016 (estimated)
  2. Study startOct 2013
  3. Primary completionJun 2015
  4. Study completionSep 2015

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Basic science
Allocation
Randomised
Intervention model
Crossover
Masking
None (open label)
Enrolment
18 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT02696772
Sponsor's protocol ID
R13-P149DC
Status last verified
Mar 2016
First submitted
26 Feb 2016
Last updated
3 Mar 2016
Results posted
No
Data monitoring committee
No
Individual data sharing
No

Publications

  • Clayton DJ, Burrell K, Mynott G, Creese M, Skidmore N, Stensel DJ, James LJ. Effect of 24-h severe energy restriction on appetite regulation and ad libitum energy intake in lean men and women. Am J Clin Nutr. 2016 Dec;104(6):1545-1553. doi: 10.3945/ajcn.116.136937. Epub 2016 Nov 2.

    PubMed 27806971

Questions about this trial

What is this clinical trial studying?

A study testing Energy intake in people with Deficiency; Calorie, run by Loughborough University.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 1 inclusion and 1 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 3 Mar 2016. Status can change between updates, so confirm with the study contact before making plans.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Ad-libitum energy intake (time frame: 48 hours). The study lists 4 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT02696772, which also lists 1 linked publication.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 3 Mar 2016.

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