Be a Member of the French Judo FederationHYPOXPERF JUDONCT07778017
Optimization of Exercise Capacity in Elite Judokas: Effects of a High-intensity Hypoxic Training Program With Eccentric Overload and Effect of Gender.
A study testing Hypoxia training and Eccentric cycling in people with Be a Member of the French Judo Federation, run by University Hospital, Strasbourg, France at 1 site in France.
Trial summary
The main objective of this study is to evaluate the effects of an innovative training program on key factors affecting judo performance. This program includes high-intensity conventional cycling sessions in hypoxic conditions (simulated altitude), with or without eccentric cycling sequences. Read more about this study
- Who is it for?
- Ages 16 to 23 yearsHealthy volunteers can take part
- Conditions the study is for
- Be a Member of the French Judo Federation
- What is being tested?
- Hypoxia training and Eccentric cycling
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 30 participants
- Where
- 1 siteFrance
- Study dates
- 11 Mar 2024to 25 Jun 2026
- 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 16 to 23 years
- All sexes
- Healthy volunteers accepted
- Child, Adult
Who may be able to join
- Member of the male or female France Judo Training Centers or of the Strasbourg Judo Development Center Registered with the French Judo Federation Male or female aged between 16 and 23 years inclusive Female participants using effective contraception at inclusion and agreeing to maintain it throughout the study participation Willing to participate in the study Non-smoker or having stopped smoking for at least 5 years Affiliated with a health insurance social security scheme Subject (and holders of parental authority, if the subject is a minor) able to understand the objectives and risks related to the research and to provide dated and signed informed consent
Who cannot join
- Recent muscular, tendinous, or joint disorders affecting the lower limbs (<3 months) Neurological, respiratory, cardiovascular, or metabolic disorders Abnormality detected during the inclusion visit or during the maximal exercise test (pre-test no. 1) Ongoing drug treatment that cannot be discontinued 7 days before Day 0 (e.g., anti-inflammatory drugs) Pregnant (urine test at inclusion) or breastfeeding women Exposure to altitude (>2000 m for more than 7 days) within the past 3 months Inability to understand the informed information provided (e.g., emergency situation, comprehension difficulties, etc.) Subject under legal protection measures, guardianship, or curatorship
Trial locations and contacts
1 site in 1 country.
About this study
The main objective of this study is to evaluate the effects of an innovative training program on key factors affecting judo performance. This program includes high-intensity conventional cycling sessions in hypoxic conditions (simulated altitude), with or without eccentric cycling sequences. During this type of cycling, a motor drives the pedals in the opposite direction compared to conventional pedaling, and the participant is asked to try to slow down the movement of the bike's pedals (braking muscle actions).
To this end, a 6-week training program consisting of 2 sessions per week will be proposed. The program's impact on the body and judo performance capacity will be assessed using a battery of tests administered before the program (pre-tests) and again at the end of the 6-week training program (post-tests).
This information will contribute to the development of a new training strategy and, offer promising prospects for the development of new training methods. This study is part of the "Very High-Performance Sport" Priority Research Program from the French National Research Agency.
- Being tested
- Hypoxia training, Eccentric cycling
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Hypoxia trainingOther
Training at a simulated altitude of 3000 m
Eccentric cyclingOther
Training at a simulated altitude of 3000 m and Eccentric cycling
| Study group | Role | What they receive |
|---|---|---|
| hypoxie | Active comparator | Not described Receives: Other: Hypoxia training |
| Hypoxic training + Hypoxia with eccentric overload | Experimental | Not described Receives: Other: Eccentric cycling |
What is being measured
The primary outcome is the main question the study is designed to answer.
The difference in maximal voluntary isometric strength of the extensor muscles measured on Day 3 and Day 57. Knee extensors of the right leg (newton-meters) Knee flexors of the right leg (newton-meters)
Measured: Day 57.
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted21 Aug 2026
- Study start11 Mar 2024
- Primary completion25 Jun 2026
- Study completion25 Jun 2026
Why it stopped: recrutment difficulties
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Be a Member of the French Judo FederationStudies of the same condition, open and under way.
- More trials run by University Hospital, Strasbourg, FranceThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
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
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 30 participants (actual)
Sponsor and investigators
- Lead sponsor
- University Hospital, Strasbourg, France
- Sponsor type
- University, hospital or other
- Collaborators
- National Research Agency, France
- Responsible party
- Sponsor
- Investigators
- Irina ENACHE, MD, Principal investigator, Hôpitaux Universitaires de Strasbourg
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07778017
- Sponsor's protocol ID
- 8144
- Acronym
- HYPOXPERF JUDO
- Status last verified
- Aug 2026
- First submitted
- 13 Aug 2026
- Last updated
- 21 Aug 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 21 Aug 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Optimization of Exercise Capacity in Elite Judokas: Effects of a High-intensity Hypoxic Training Program With Eccentric Overload and Effect of Gender.
- ClinicalTrials.gov ID
- NCT07778017
- Acronym / sponsor ID
- HYPOXPERF JUDO / 8144
- Study type
- Interventional
- Recruitment status
- TerminatedReason stopped: recrutment difficulties
- Enrolment
- 30 participants (actual)
- Lead sponsor
- University Hospital, Strasbourg, FranceUniversity, hospital or other
- Collaborators
- National Research Agency, France
- Study start
- 11 Mar 2024 (actual)
- Primary completion
- 25 Jun 2026 (actual)
- Study completion
- 25 Jun 2026 (actual)
- First posted
- 21 Aug 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The main objective of this study is to evaluate the effects of an innovative training program on key factors affecting judo performance. This program includes high-intensity conventional cycling sessions in hypoxic conditions (simulated altitude), with or without eccentric cycling sequences. During this type of cycling, a motor drives the pedals in the opposite direction compared to conventional pedaling, and the participant is asked to try to slow down the movement of the bike's pedals (braking muscle actions).
To this end, a 6-week training program consisting of 2 sessions per week will be proposed. The program's impact on the body and judo performance capacity will be assessed using a battery of tests administered before the program (pre-tests) and again at the end of the 6-week training program (post-tests).
This information will contribute to the development of a new training strategy and, offer promising prospects for the development of new training methods. This study is part of the "Very High-Performance Sport" Priority Research Program from the French National Research Agency.
Study design
- Primary purpose
- Basic science
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| hypoxie | Active comparator | Other: Hypoxia training |
| Hypoxic training + Hypoxia with eccentric overload | Experimental | Other: Eccentric cycling |
Who may qualify
- Ages
- 16 to 23 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Child, Adult
Key inclusion criteria (1 listed)
- Member of the male or female France Judo Training Centers or of the Strasbourg Judo Development Center Registered with the French Judo Federation Male or female aged between 16 and 23 years inclusive Female participants using effective contraception at inclusion and agreeing to maintain it throughout the study participation Willing to participate in the study Non-smoker or having stopped smoking for at least 5 years Affiliated with a health insurance social security scheme Subject (and holders of parental authority, if the subject is a minor) able to understand the objectives and risks related to the research and to provide dated and signed informed consent
Key exclusion criteria (1 listed)
- Recent muscular, tendinous, or joint disorders affecting the lower limbs (<3 months) Neurological, respiratory, cardiovascular, or metabolic disorders Abnormality detected during the inclusion visit or during the maximal exercise test (pre-test no. 1) Ongoing drug treatment that cannot be discontinued 7 days before Day 0 (e.g., anti-inflammatory drugs) Pregnant (urine test at inclusion) or breastfeeding women Exposure to altitude (>2000 m for more than 7 days) within the past 3 months Inability to understand the informed information provided (e.g., emergency situation, comprehension difficulties, etc.) Subject under legal protection measures, guardianship, or curatorship
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Hypoxia trainingTraining at a simulated altitude of 3000 m | Other | hypoxie |
| Eccentric cyclingTraining at a simulated altitude of 3000 m and Eccentric cycling | Other | Hypoxic training + Hypoxia with eccentric overload |
Primary outcome
The difference in maximal voluntary isometric strength of the extensor muscles measured on Day 3 and Day 57. Knee extensors of the right leg (newton-meters) Knee flexors of the right leg (newton-meters)
Time frame: Day 57.
Results and safety
The study was stopped early (reason given: recrutment difficulties). Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 21 Aug 2026.
Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Irina ENACHE, MD principal investigator
Hôpitaux Universitaires de Strasbourg
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Hypoxia training and Eccentric cycling in people with Be a Member of the French Judo Federation, run by University Hospital, Strasbourg, France 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 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: stopped early, as of the sponsor's last update on 21 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 was stopped early (reason given: recrutment difficulties). Results are not available in the source record.
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?
The difference in maximal voluntary isometric strength of the extensor muscles measured on Day 3 and Day 57. Knee extensors of the right leg (newton-meters) Knee flexors of the right leg (newton-meters) (time frame: Day 57.). 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 21 Aug 2026.