ClinicalTrials.gg
RecruitingNCT06626295SNACKEXUpdated May 5, 2026

Exercise-snacks for Breaking the Sedentary Lifestyle and Improving the Physical Fitness of Obese Adolescents?

An interventional study of exercise-snack group in Obese Adolescents, Sedentary Time and Exercise, sponsored by University of Avignon. Recruiting at 2 sites in France. Open to participants aged 11 Years to 18 Years. Per ClinicalTrials.gov, last updated 2026-05-05.

Sponsored by University of Avignon · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Primary completion was expected by Jun 2026, 5 months ago, but the record still lists the study as recruiting.
  • Started Sep 2024; still recruiting 2 years 2 months later.
Phase
Not applicable
Study type
Interventional
Enrollment
48
Allocation
Randomized
Ages
11 Years to 18 Years
Sex
All
01

Study summary

The management of a person with obesity involves long-term behavioral changes with a balanced diet in both quantity and quality, along with the adoption of a more active lifestyle: increasing physical activities and reducing sedentary behaviors. The school setting has been identified as a favorable environment for interventions aimed at reducing and interrupting the time adolescents spend sitting and preventing the associated negative health consequences.

Recently, very short (\< 1 minute) and intense exercises, called 'exercise-snacks,' have been reported to be effective in adults for 1) improving physical fitness over 6 weeks, and 2) improving vascular function and lowering blood glucose levels over a single day. Additionally, in adolescents with diabetes, they have been shown to reduce body fat. This raises the question of whether adding \'exercise-snack\' sessions to a multidimensional care program for hospitalized obese adolescents could further improve their physical fitness in the short and medium term.

The objective of this project is to compare the effects of a traditional multidimensional care program with the addition of 'exercise-snacks' to the same care program without \'exercise-snacks\' on the physical fitness, body composition, vascular function, and physical activity and sedentary behaviors of obese children in the short and medium term. Forty-eight obese adolescents will be included. The \'exercise-snack\' group will perform six exercise sessions per day for three weeks in addition to the standard care. The control group will receive only the standard care. Assessments of physical fitness, body composition, vascular health, and questionnaires on physical activity, sedentary behavior, and cognitive restraint will be conducted at the beginning and end of the three-week program, as well as 1 and 3 months after the end of the program.

02

Conditions studied

  • Obese Adolescents
  • Sedentary Time
  • Exercise
03

In context

Sedentary Behavior

1,273 studies on the registry are indexed under Sedentary Behavior; 300 are open to participants now.

This study's planned enrollment of 48 is below the median of 60 across 1,076 interventional studies indexed under Sedentary Behavior.

Browse Sedentary Behavior studies →

Lead sponsor

University of Avignon is the lead sponsor of 12 studies on the registry; 5 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
11 Years to 18 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Z-score corresponding to stage 2 obesity,
  • no weight loss of more than 5% of total body weight in the past 3 months,
  • parental consent
  • minor\'s acceptance

Exclusion criteria

Exclusion Criteria:

  • to physical activity
  • current participation in a clinical trial
Terms in these criteria, in plain language(2)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

BMI (body mass index)

Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.

What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
48 participants (estimated)

Study arms

  • Experimental
    exercise-snack group

    Exercise program: Adolescents in the exercise-snacks group will perform 4 "exercise-snacks" sessions per day during 3 weeks in addition to multidimensional care program. These sessions will consist of 1-min various intense supervised exercises . They will also receive information about their attitudes to physical activity.

    Other: exercise-snack group

  • No intervention
    control group

    only the multidimensional care program without 'exercise-snacks'

Interventions

  • Otherexercise-snack group

    Adolescents in the exercise-snacks group will perform 4 \&amp;amp;amp;#34;exercise-snacks\&amp;amp;amp;#34; sessions per day during 3 weeks in addition to multidimensional care program. These sessions will consist of 1-min various intense supervised exercises . They will also receive information about their attitudes to physical activity.

06

What researchers measure

Primary outcomes

  1. Changes in aerobic fitness: predicted VO2max

    Measured by the Spartacus 15-15 field test, an intermittent maximal running field test with prediction of VO2max: For girls: VO2max = last stage \* 153.4433 + BMI \* 58.64534 + âge \* -2.701522-921.2878 For boys: VO2max = last stage \* 153.4433 + 320.1583 + BMI \* 58.64534 + âge \* -2.701522-921.2878

    Time frame: at inclusion, at the end of the 3-weeks program and 1 and 3 month following the end of the program

Secondary outcomes

  1. Changes in fat mass

    measured by medical body composition analyzer mBCA SECA, in kg

    Time frame: from inclusion to the end of the 3-weeks program and 1 and 3 month following the end of the program

  2. Changes in body mass index in kg/m²

    Time frame: at inclusion, at the end of the 3-weeks program and 1 and 3 month following the end of the program

  3. change in carotid extra-media thickness

    measured by echocardiography (Mylab, Esaote, Italie) and off-line analyses by CAROLAB, in mm

    Time frame: at inclusion, at the end of the 3-weeks program and 1 and 3 month following the end of the program

  4. Changes in carotid intima-thickness

    measured by echocardiography (Mylab, Esaote, Italie) and off-line analyses by CAROLAB, in mm

    Time frame: at inclusion, at the end of the 3-weeks program and 1 and 3 month following the end of the program

  5. Change from baseline in carotid compliance (mm²/mmHg)

    measured by echocardiography (Mylab, Esaote, Italie) according to the variations of systolic and diastolic arterial diameters and pulse pressure (measured on the left arm by an automated system Omron)

    Time frame: From inclusion to the end of the 3-weeks program and 1 and 3 month following the end of the program

  6. Changes in eating behaviours traits

    measured by the Three-Factor Eating Questionnaire to assess three factors: the cognitive restraint scale (6 items), the emotional eating scale (6 items), and the uncontrolled eating scale (9 items) with a 4-point response scale. For the TFEQ scores, means are computed for each subscale and are transformed to correspond to a 0-100 scale score Higher scores indicate higher levels of restrained eating, disinhibited eating, and predisposition to hunger.

    Time frame: at inclusion, at the end of the 3-weeks program and 1 and 3 month following the end of the program

  7. Changes in psychometric properties of physical activity and sedentary

    measured by a 31 items self-administered questionnaire CAPAS-Q to assess the psychometric properties of the Children and Adolescents Physical Activity (PA) and Sedentar (SB) by-Questionnaire (Fillon et al 2022) Responses are quoted from 1 to 4 for PA and from 1 to 6 for SB. The sum of items 1, 3, 6, 8, 10, 12, and 17 exploring PA duration, the sum of items 2, 4, 7, 11, 13, and 18 exploring PA intensity, within its different contexts of practice: school PA (i.e., the sum of items 1,2,3,4,5), non-school PA (the sum of items 6 to 14), and sports and leisure PA (the sum of items 15 to 18). The last 13 items designe to assess the SB dimension:, exploring screen ( the sum of items 2, 6, and 7) or non-screen non-screen ( the sum of items 1, 4, 5, 8, 9, 12 and 13) behaviors, the consecutive SB duration (the sum of items 3, 10 and 11) and the context of SB: school SB (the sum of items 1 to 3), non-school SB (the sum of items 4 to 11), SB during transportation (the sum of 12,13)

    Time frame: from inclusion to the end of the 3-weeks program and 1 and 3 month following the end of the program

  8. change in level of habitual physical activity

    measured by accelerometric data using AX3, Axivity over 7-days consecutive period before inclusion and before the 1 and 3-month visit

    Time frame: before inclusion and before the 1 and 3-month visit

07

Study locations

1 of 2 sites recruiting
  • Instiutut Saint Pierre
    Palavas-les-Flots, 34250, France
    Recruiting
  • Institut Saint Pierre
    Palavas-les-Flots, France
    Not yet recruiting
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Started Sep 2024 (actual). Primary completion is estimated for Jun 2026, 21 months after the start.

Of 733 non-industry interventional studies with no phase under Sedentary Behavior, half reached primary completion within 14 months of starting (the median), counting those still running; a quarter within 6 and three quarters within 31. This study's planned 21 months is above that.

Counting every sponsor, half of 741 studies reached it within 14 months; a quarter within 6 and three quarters within 31.

How these figures are worked out, and which studies are left out of them.

Registered
Sep 23, 2024
First posted
Oct 3, 2024
StartActual
Sep 9, 2024
Primary completionEst.
Jun 2026
CompletionEst.
Jun 2026
Last update
May 5, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on May 5, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06626295
Lead sponsor
University of Avignon
Collaborators
Institut Saint Pierre
Responsible party
Sponsor
First posted
Oct 3, 2024
Start date
Sep 9, 2024
Primary completion
Jun 2026 (estimated)
Completion
Jun 2026 (estimated)
Last update
May 5, 2026

Study contacts

VINET Agnès VINET Agnès
Contact
agnes.vinet@univ-avignon.fr
33 4 13 95 13 44

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Interested in this study?

Eligibility is decided by the study team. Share this record with your doctor or contact the team directly.

Contact study team

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion