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Effect of Exercise Timing on Energy Intake and Appetite in Adolescents With Obesity: the TIMEX 3 Study

Effect of Exercise Timing on Energy Intake and Appetite in Adolescents With Obesity: the TIMEX 3 Study

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03968458
Acronym
TIMEX 3
Enrollment
18
Registered
2019-05-30
Start date
2019-08-31
Completion date
2019-10-30
Last updated
2025-07-10

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Pediatric Obesity

Keywords

appetite control, obesity, Adolescents, exercise timing

Brief summary

The aim of the present study is to compare the effect of the timing (30 vs. 90 minutes) between a fixed exercise and the following test meal on energy intake, appetite feelings and food reward in adolescents with obesity.

Detailed description

The present study will compare the nutritional response to the realisation of an acute exercise 90 minutes 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 90 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.

Interventions

BEHAVIORALCON

. 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.

BEHAVIORALEX-30

Condition with an acute exercise set 30 minutes before lunch 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.

BEHAVIORALEX-90

condition with an acute exercise set 90 minutes before lunch. 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.

Sponsors

Laboratoire des Adaptations Métaboliques à l'Exercice en conditions Physiologiques et Pathologiques
CollaboratorOTHER
University Hospital, Clermont-Ferrand
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
12 Years to 16 Years
Healthy volunteers
No

Inclusion criteria

* 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

Exclusion criteria

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

Design outcomes

Primary

MeasureTime frameDescription
Change of energy intake measured during an ad libitum buffet meal (in kcal).day 1 , day 8, day 15Change of 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 by a member of the investigation team and then analysed using Bilnuts software.

Secondary

MeasureTime frameDescription
Hunger feelingsday 1 , day 8, day 15: hunger area under the curve will be assessed using visual analogue scale through a the day
Food rewardday 1 , day 8, day 15The participants will be asked to complete a validated computer-based procedure to measure food reward (Leeds Food Preference Questionnaire; LFPQ)

Countries

France

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 9, 2026