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Pediatric ObesityNCT03807609

Energy Intake and Exercise Timing

A study testing EX -30. Condition with an acute exercise set 30 minutes before lunch and EX-180. condition with an acute exercise set 180 minutes before lunch in people with Pediatric Obesity, run by University Hospital, Clermont-Ferrand at 1 site in France.

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

The aim of the present study is to compare the effect of an exercise performed 180 or 30 minutes before lunch on the energy intake of adolescents with obesity. Read more about this study

Who is it for?
Ages 12 to 16 years
Conditions the study is for
Pediatric Obesity
What is being tested?
EX -30. Condition with an acute exercise set 30 minutes before lunch and EX-180. condition with an acute exercise set 180 minutes before lunch
Could I receive a placebo?
No, everyone receives an active treatment
How many people
15 participants
Where
1 siteFrance
Study dates
19 Jan 2019to 31 Mar 2019
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 12 to 16 years
  • All sexes
  • No healthy volunteers
  • Child

Who may be able to join

  • - BMI percentile > 97th percentile according to the french curves.
  • ages 12-16 years old
  • Signed consent form
  • being registered in the national social security system
  • no contraindication to physical activity

Who cannot join

  • Previous surgical interventions that is considered as non-compatible with the study.
  • Diabetes
  • weight loss during the last 6 months
  • cardiovascular disease or risks

Trial locations and contacts

1 site in 1 country.

France1 site

  • Chu Clermont-Ferrand

    Clermont-Ferrand, 63003

Other trials in France

About this study

Official title: Does Exercise Timing Modify Post-exercise Energy Intake in Adolescents With Obesity

The aim of the present study is to compare the effect of an exercise performed 180 or 30 minutes before lunch on the energy intake of adolescents with obesity.

Read the detailed description

The present study will compare the nutritional response to the realisation of an acute exercise 180 or 30 minutes before an ad libitum buffet meal in adolescents with obesity. 18 adolescents with obesity will be asked to randomly complete three experimental sessions: i) one control session (rest); ii) one session with an acute exercise realized 180 minutes before lunch; iii) one session with the same exercise performed 30 minutes before lunch. Their ad libitum energy intake will be assessed during lunch as well as at dinner time. Appetite feelings will be assessed at regular intervals and their food reward in response to the lunch will also be assessed.

Being tested
CON . control condition without exercise / rest condition, EX -30. Condition with an acute exercise set 30 minutes before lunch, EX-180. condition with an acute exercise set 180 minutes before lunch
Keywords
appetite control, obesity, Adolescents, exercise timing
Medical subject headings
Pediatric Obesity, Obesity

What participants receive

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

  • CON . control condition without exercise / rest conditionOther

    Control condition without exercise / rest condition. The adolescents will be asked to remain quiet and at rest during the morning and will receive an ad libitum meal at lunch and dinner times. Their food reward will be assessed before and after lunch. Their appetite feelings will be assessed at regular intervals.

  • EX -30. Condition with an acute exercise set 30 minutes before lunchOther

    The adolescents will be asked to complete a 30 minutes exercise set at 65% of their capacities (cycling), 30 minutes before lunch. Lunch will be served ad libitum as well as diner. Their food reward will be assessed before and after lunch. Their appetite feelings will be assessed at regular intervals.

  • EX-180. condition with an acute exercise set 180 minutes before lunchOther

    The adolescents will be asked to complete a 30 minutes exercise set at 65% of their capacities (cycling), 30 minutes before lunch. Lunch will be served ad libitum as well as diner. Their food reward will be assessed before and after lunch. Their appetite feelings will be assessed at regular intervals.

Study groups in NCT03807609
Study groupRoleWhat they receive
CON .ExperimentalThe adolescents will be asked to remain quiet and at rest during the morning and will receive an ad libitum meal at lunch and dinner times. Their food reward will be assessed before and after lunch. Their appetite feelings will be assessed at regular intervals.
Receives: Other: CON . control condition without exercise / rest condition
EX -30.ExperimentalThe adolescents will be asked to complete a 30 minutes exercise set at 65% of their capacities (cycling), 30 minutes before lunch. Lunch will be served ad libitum as well as diner. Their food reward will be assessed before and after lunch. Their appetite feelings will be assessed at regular intervals.
Receives: Other: EX -30. Condition with an acute exercise set 30 minutes before lunch
EX-180ExperimentalThe adolescents will be asked to complete a 30 minutes exercise set at 65% of their capacities (cycling), 30 minutes before lunch. Lunch will be served ad libitum as well as diner. Their appetite feelings will be assessed at regular intervals.
Receives: Other: EX-180. condition with an acute exercise set 180 minutes before lunch

What is being measured

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

  1. Energy intake measured during an ad libitum buffet meal (in kcal).

    food intake will be measured ad libitum during a lunch buffet. The adolescents will be offered an ad libitum buffet-type meal composed based on their food intake preferences. Their intake will be weighted using an electronic food scale (Casio Scale, units: grams) by a member of the investigation team and then analysed using Bilnuts software.

    Measured: at day 1

Secondary outcomes (2)

  1. Hunger feelings

    hunger area under the curve will be assessed using visual analogue scale (VAS) through a the day ranging from 0 to 150, 0 being "not at all", 150 being "completely". The question asked being: How hungry are you right now?"

    Measured: at day 1

  2. Food reward

    Leeds Food Preference Questionnaire; LFPQ.Briefly, the LFPQ provides measures of the wanting and liking for an array of food images, varying in both fat content and taste.To measure the explicit liking and explicit wanting, participants are asked to rate the extent to which they "liked" or "wanted" each randomly presented food item with a 100-mm visual analogue scale. . The construct from the scales are : Explicit liking; Explicit Wanting; Implicit liking, implicit wanting, Fat Choice and Fat Taste. Each component ranged from -50 to +50. There is no total score.

    Measured: at day 1

Timeline

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

  1. First posted17 Jan 2019
  2. Study start19 Jan 2019
  3. Primary completion31 Mar 2019
  4. Study completion31 Mar 2019

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
Other
Allocation
Randomised
Intervention model
Crossover
Masking
None (open label)
Enrolment
15 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT03807609
Sponsor's protocol ID
CHU-419
Status last verified
Jul 2026
First submitted
15 Jan 2019
Last updated
3 Aug 2026
Results posted
No
FDA-regulated drug
No
FDA-regulated device
No

Publications

  • Fillon A, Mathieu ME, Masurier J, Roche J, Miguet M, Khammassi M, Finlayson G, Beaulieu K, Pereira B, Duclos M, Boirie Y, Thivel D. Effect of exercise-meal timing on energy intake, appetite and food reward in adolescents with obesity: The TIMEX study. Appetite. 2020 Mar 1;146:104506. doi: 10.1016/j.appet.2019.104506. Epub 2019 Oct 31.

    PubMed 31678149

  • Moore H, Pereira B, Fillon A, Miguet M, Masurier J, Beaulieu K, Finlayson G, Thivel D. The association between obesity severity and food reward in adolescents with obesity: a one-stage individual participant data meta-analysis. Eur J Nutr. 2024 Jun;63(4):1241-1255. doi: 10.1007/s00394-024-03348-4. Epub 2024 Feb 20.

    PubMed 38376518

Questions about this trial

What is this clinical trial studying?

A study testing EX -30. Condition with an acute exercise set 30 minutes before lunch and EX-180. condition with an acute exercise set 180 minutes before lunch in people with Pediatric Obesity, run by University Hospital, Clermont-Ferrand at 1 site in France.

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 5 inclusion and 4 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 Aug 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in France. Whether a site is taking part right now should be confirmed with that site. See every site.

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?

Energy intake measured during an ad libitum buffet meal (in kcal). (time frame: at day 1). 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 NCT03807609, which also lists 2 linked publications.

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 Aug 2026.

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