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AdultsOPEXNCT02938117

Impact of a Training Program on the Body Composition of Overweight and Obese Young Adults : Concentric Versus Eccentric Exercise

A study testing cycling exercises in people with Adults and BMI>35, run by University Hospital, Clermont-Ferrand at 1 site in France.

Unknown status

Status not confirmed. The sponsor has not verified this record for over two years, so it may be out of date.

Official record
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Trial summary

Nowadays, eccentric exercise can be realized in a dynamic way with an ergocycle wich permits eccentric (ECC) lower limbs contractions at a defined power output. With this type of ergometer, O2 consumption (VO2) in ECC is three fold lower than in concentric (CON) for the same power output. Read more about this study

Who is it for?
Ages 18 to 35 yearsHealthy volunteers can take part
Conditions the study is for
Adults, BMI>35
What is being tested?
cycling exercises
Could I receive a placebo?
No, everyone receives an active treatment
How many people
30 participants
Where
1 siteFrance
Study dates
Jan 2017to Jan 2020
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 35 years
  • All sexes
  • Healthy volunteers accepted
  • Adult

Who may be able to join

  • - Adults
  • Obese (BMI>35)
  • Inactive (<10 METS/h/week)
  • No other chronic disease (cardio pulmonary, osteo articulary or muscular diseases), no surgery during the last 3 months, no contraindication to physical activity

Who cannot join

  • (BMI<35)

Trial locations and contacts

1 site in 1 country.

France1 site
  • CHU Clermont-Ferrand

    Clermont-Ferrand, 63003

    Patrick LACARIN, 04 73 75 11 95, placarin@chu-clermontferrand.fr

    Valérie JULIAN

Other trials in France

About this study

Nowadays, eccentric exercise can be realized in a dynamic way with an ergocycle wich permits eccentric (ECC) lower limbs contractions at a defined power output. With this type of ergometer, O2 consumption (VO2) in ECC is three fold lower than in concentric (CON) for the same power output. Consequently, ECC program could be used in chronic disorders with limited capacities, such as obesity.

The investigators hypothesis that an eccentric training program, as it will induce higher mechanical constraints, would improve body composition, especially by reducing fat mass. This effect could be explained by an increased rest energy expenditure and a better improvement in biological parameters (particularly lipid profile and insulin-resistance) after ECC training (versus CON training).

This study aims to compare the modification of fat mass after an ECC program versus a CON program at the same VO2. The secondary goal is to assess the physiological mechanisms involved in the modification of body composition

Read the detailed description

Thirty adults will be randomized into 2 groups: CON or EXC. The patients of ECC group will follow habituation sessions (2weeks) to avoid the secondary muscular effects of high intensity eccentric exercise. The training program will last 12 weeks for the two groups. Before and after, each subjects will participate to the following measurements: total and segmental body composition (DXA), aerobic capacities (maximal incremental exercise test, VO2max), muscular lower limbs strength (isometric end isokinetic dynamometer), rest energy expenditure (indirect calorimetry), biological parameters (lipid profile, insulin-resistance), physical activity (actimetry), food intakes and quality of life (questionnaires).

Conditions
Adults, BMI>35
Being tested
cycling exercises
Keywords
obesity, eccentric exercise, body composition, training program
Medical subject headings
Obesity

What participants receive

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

  • cycling exercisesOther

Study groups in NCT02938117
Study groupRoleWhat they receive
CON : concentric cycling exerciseExperimentalThirty adults will be randomized into 2 groups: CON or EXC. The patients of ECC group will follow habituation sessions (2weeks) to avoid the secondary muscular effects of high intensity eccentric exercise
Receives: Other: cycling exercises
EXC : eccentric cycling exerciseExperimentalThirty adults will be randomized into 2 groups: CON or EXC. The patients of ECC group will follow habituation sessions (2weeks) to avoid the secondary muscular effects of high intensity eccentric exercise
Receives: Other: cycling exercises

What is being measured

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

  1. change in total body fat mass (Dual X ray Absorptiometry)

    Measured: before and after the 12 weeks training program

Secondary outcomes (12)
  1. aerobic capacities (VO2max)

    Measured: before and after the 12 weeks training program

  2. isometric muscular lower limbs strength

    Measured: before and after the 12 weeks training program

  3. isokinetic muscular lower limbs strength

    Measured: before and after the 12 weeks training program

  4. rest energy expenditure (indirect calorimetry)

    Measured: before and after the 12 weeks training program

  5. biological parameters (plasma lipid profile)

    Measured: before and after the 12 weeks training program

  6. biological parameters (insulin-resistance)

    Measured: before and after the 12 weeks training program

  7. physical activity

    (questionnaires)

    Measured: before and after the 12 weeks training program

  8. physical activity

    (actimetry)

    Measured: before and after the 12 weeks training program

  9. food intakes

    (measurements)

    Measured: before and after the 12 weeks training program

  10. food intakes

    (questionnaires)

    Measured: before and after the 12 weeks training program

  11. quality of life (questionnaires)

    Measured: before and after the 12 weeks training program

  12. segmental body composition

    (segmental fat and fat free mass)

    Measured: before and after the 12 weeks training program

Timeline

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

  1. First posted19 Oct 2016 (estimated)
  2. Study startJan 2017
  3. Primary completionDec 2019 (estimated)
  4. Study completionJan 2020 (estimated)

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
Allocation
Randomised
Intervention model
Parallel groups
Masking
Single blind
Who is masked
Participant
Enrolment
30 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT02938117
Sponsor's protocol ID
CHU-0284
Other IDs
2016-A01185-46
Acronym
OPEX
Status last verified
Oct 2016
First submitted
10 Oct 2016
Last updated
19 Oct 2016
Results posted
No

Questions about this trial

What is this clinical trial studying?

A study testing cycling exercises in people with Adults and BMI>35, 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 4 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: status not confirmed, as of the sponsor's last update on 19 Oct 2016. 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?

Results are not available in the source record.

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

Contact Patrick LACARIN (04 73 75 11 95, placarin@chu-clermontferrand.fr), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

change in total body fat mass (Dual X ray Absorptiometry) (time frame: before and after the 12 weeks training program). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
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 19 Oct 2016.

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