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Spondylolysis LumbarActiveBackNCT07430072

A Pilot Study on the Safety of Active Conservative Management of Low Grade Lumbar Stress Reactions in Adolescent Soccer Players

A study testing Active rehabilitation protocol in people with Spondylolysis Lumbar, run by Western Norway University of Applied Sciences at 3 sites in Norway.

Not yet recruiting

Opening soon. The study is approved but enrolment has not started yet. Sites may already take enquiries.

Sites and contacts
Official record
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Trial summary

Introduction: The Background Prevalence: Low back pain (LBP) is very common in young athletes, and lumbar spondylolysis (an overuse injury of bones in the low back) is the leading cause. In adolescent male soccer players with LBP, almost half (up to 48%) have this specific injury. Read more about this study

Who is it for?
Ages 14 to 19 years
Conditions the study is for
Spondylolysis Lumbar
What is being tested?
Active rehabilitation protocol
Could I receive a placebo?
No, everyone receives an active treatment
How many people
40 participants
Where
3 sitesNorway
Study dates
May 2026to Feb 2027
Phase
Interventional
Are there results?
Not yet: the study is under way

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 14 to 19 years
  • All sexes
  • No healthy volunteers
  • Child, Adult

Who may be able to join

  • Age: 14-19.
  • Soccer players
  • Low grade (1-2) lumbar stress reaction in L4 or L5.
  • Pain in the area of the affected vertebrae with sports activity and/or ADL.

Who cannot join

  • Not able to get MRI,
  • Other conditions/injuries that potentially could affect the result (at baseline and during follow up), i.e. lumbar disc prolapse, scheurmans disease, ankylosing spondylitis,
  • Disorders influencing growth.
  • Previously unsuccessful treatment of lumbar stress reaction.

Trial locations and contacts

3 sites in 1 country. Contact the study team or a site near you to ask about taking part.

Bård E Bogen, Professor contact

+4791157142

bard.e.bogen@uib.no

Norway3 sites
  • Idrettsmedisinsk Klinikk, Brann Stadion

    Bergen, 5052

    David Tovi, Physiotherapist MSc, +4741247339, david.tovi@hotmail.com

  • Western Norway Center for Sports Medicine

    Bergen, 5058

    Nicolay Morland, Physiotherapist MSc, +4798654380, nicolay.morland@gmail.com

  • The Norwegian FA Sports Medicine Clinic

    Oslo, 1177

    Jan Henning Løken, Physiotherapist MSc, +4791601122, jan.loken@ihs.no

Other trials in Norway

About this study

Introduction: The Background

  • Prevalence: Low back pain (LBP) is very common in young athletes, and lumbar spondylolysis (an overuse injury of bones in the low back) is the leading cause. In adolescent male soccer players with LBP, almost half (up to 48%) have this specific injury.
  • The Current Standard: Existing Norwegian guidelines mandate a break from all sports for a minimum of 3 months when rehabilitating spondylolysis
  • The Challenge: These strict guidelines lack strong evidence from clinical trials and can lead to negative social and physical consequences for the athlete, including exclusion from team activities and reduced general physical activity.
Read more

AIM: The Goal of the Study To determine the safety and effectiveness of a newly developed, 4-phased, pain-controlled rehabilitation protocol that uses early, criteria-based activity progression (based on functional capacity and pain levels) for youth football players diagnosed with spondylolysis.

Method: Study Design and Measurements

  • Design: This is a pilot study (prospective cohort study) involving 30-40 youth football players with a first-time diagnosis of low grade (1-2) spondylolysis.
  • Diagnosis: The injury is confirmed using an MRI scan (specifically the VIBE sequence).
  • Data Collection: We will gather data through:
  • MRIs: Comparing images at baseline (start) and after 3 months.
  • Standardized Clinical Examinations.
  • PROMs (Patient-Reported Outcome Measures - standardized questionnaires about function and pain).
  • Weekly reporting on pain intensity and training volume.
  • Outcome: We will compare the changes in the bone healing seen on the MRI findings between the start and end of the 3-month period, and at six months if applicable.
Being tested
Active rehabilitation protocol
Keywords
Spondylolysis, adolescent, MRI, football
Medical subject headings
Spondylolysis

What participants receive

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

  • Active rehabilitation protocolOther

    Also called ActiveBack, AktivRygg

    Current Norwegian guidelines recommend that everyone with this injury stop participating in sports for a minimum of 3 months. There is very little research supporting these, and other international, guidelines. Considering the negative consequences of the current regime, we wish to conduct a pilot project with 30-40 football (soccer) players aged 13-19 with the mildest, and most common, MRI grading of this injury (Grade 1). Here, we aim to test a rehabilitation protocol that is more pain-controlled and individually adapted to each athlete. The training protocol is based on other so-called low-risk stress fractures, where the probability of healing is considered good, and is divided into four phases. The time it takes to complete the rehabilitation protocol will be quite similar to the expected healing time and current protocols. The actual rehabilitation time may ultimately end up being both shorter and longer than current protocols, but with a higher degree of meaningful activity.

Study groups in NCT07430072
Study groupRoleWhat they receive
Active rehabilitation of low grade lumbar spondylolysisExperimentalNot described
Receives: Other: Active rehabilitation protocol

What is being measured

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

  1. Change in edema on MRI

    Patients will have a repeat MRI performed at 3 months. A radiologist will assess for change in the spondylolytic lesion, edema and anterolisthesis. An addiotonal MR will be performed at 6 months for patients with the same or higher classification on the Hollenberg Critera at the 3 month follow-up

    Measured: Baseline, 3 months and potentially at 6 months.

Secondary outcomes (2)
  1. Changes in Youth Back Activity Questionnaire - norwegian version

    The Youth Back Activity Questionnaire (YouthBAQ) is a 14-item validated tool designed specifically to measure functional limitations in adolescents (12-18) with low back pain. YouthBAQ is scored on 0-100 scale with 100 representing no disability and 0 representing maximum disability.

    Measured: Baseline, 6 weeks, 12 weeks, 18 weeks and 26 weeks

  2. Changes in Oswestry Disability Index

    The Oswestry Disability Index (ODI) a patient-completed questionnaire which gives a subjective percentage score of level of function (disability) in activities of daily living in those rehabilitating from low back pain. It is considered one of the best accepted tools for assessment of low back pain, but it is not designed for adolescents.

    Measured: Baseline, 6 weeks, 12 weeks, 18 weeks and 26 weeks

Timeline

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

  1. First posted24 Feb 2026
  2. Study startMay 2026 (estimated)
  3. Primary completionDec 2026 (estimated)
  4. Study completionFeb 2027 (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
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrolment
40 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT07430072
Sponsor's protocol ID
821259
Acronym
ActiveBack
Status last verified
Apr 2026
First submitted
2 Feb 2026
Last updated
6 May 2026
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
Yes: Anonymized raw data sheet will be shared upon request or added to submission if required

Publications

  • Slade SC, Dionne CE, Underwood M, Buchbinder R. Consensus on Exercise Reporting Template (CERT): Explanation and Elaboration Statement. Br J Sports Med. 2016 Dec;50(23):1428-1437. doi: 10.1136/bjsports-2016-096651. Epub 2016 Oct 5.

    PubMed 27707738
  • Dalen-Lorentsen T, Ranvik A, Bjorneboe J, Clarsen B, Andersen TE. Facilitators and barriers for implementation of a load management intervention in football. BMJ Open Sport Exerc Med. 2021 Jun 22;7(2):e001046. doi: 10.1136/bmjsem-2021-001046. eCollection 2021.

    PubMed 34249374
  • Grotle M, Brox JI, Vollestad NK. Cross-cultural adaptation of the Norwegian versions of the Roland-Morris Disability Questionnaire and the Oswestry Disability Index. J Rehabil Med. 2003 Sep;35(5):241-7. doi: 10.1080/16501970306094.

    PubMed 14582557
  • Childs JD, Piva SR, Fritz JM. Responsiveness of the numeric pain rating scale in patients with low back pain. Spine (Phila Pa 1976). 2005 Jun 1;30(11):1331-4. doi: 10.1097/01.brs.0000164099.92112.29.

    PubMed 15928561
  • Koh E, Walton ER, Watson P. VIBE MRI: an alternative to CT in the imaging of sports-related osseous pathology? Br J Radiol. 2018 Jul;91(1088):20170815. doi: 10.1259/bjr.20170815. Epub 2018 Mar 15.

    PubMed 29474097
  • Dhouib A, Tabard-Fougere A, Hanquinet S, Dayer R. Diagnostic accuracy of MR imaging for direct visualization of lumbar pars defect in children and young adults: a systematic review and meta-analysis. Eur Spine J. 2018 May;27(5):1058-1066. doi: 10.1007/s00586-017-5305-2. Epub 2017 Sep 23.

    PubMed 28942567
  • Takei S, Torii S, Taketomi S, Iwanuma S, Tojima M, Otomo M, Iizuka S, Tanaka S. Is Increased Kicking Leg Iliopsoas Muscle Tightness a Predictive Factor for Developing Spondylolysis in Adolescent Male Soccer Players? Clin J Sport Med. 2022 Mar 1;32(2):e165-e171. doi: 10.1097/JSM.0000000000000920.

    PubMed 33844489
  • Tsutsui T, Iizuka S, Takei S, Maemichi T, Torii S. Risk Factors for Symptomatic Bilateral Lumbar Bone Stress Injury in Adolescent Soccer Players: A Prospective Cohort Study. Am J Sports Med. 2023 Mar;51(3):707-714. doi: 10.1177/03635465221146289. Epub 2023 Jan 20.

    PubMed 36661480
  • Yokoe T, Tajima T, Sugimura H, Kubo S, Nozaki S, Yamaguchi N, Morita Y, Chosa E. Comparison of symptomatic spondylolysis in young soccer and baseball players. J Orthop Surg Res. 2020 Sep 3;15(1):378. doi: 10.1186/s13018-020-01910-4.

    PubMed 32883336
  • El Rassi G, Takemitsu M, Woratanarat P, Shah SA. Lumbar spondylolysis in pediatric and adolescent soccer players. Am J Sports Med. 2005 Nov;33(11):1688-93. doi: 10.1177/0363546505275645. Epub 2005 Aug 10.

    PubMed 16093537
  • Selhorst M, Fischer A, MacDonald J. Prevalence of Spondylolysis in Symptomatic Adolescent Athletes: An Assessment of Sport Risk in Nonelite Athletes. Clin J Sport Med. 2019 Sep;29(5):421-425. doi: 10.1097/JSM.0000000000000546.

    PubMed 31460956
  • Wall J, Meehan WP 3rd, Trompeter K, Gissane C, Mockler D, van Dyk N, Wilson F. Incidence, prevalence and risk factors for low back pain in adolescent athletes: a systematic review and meta-analysis. Br J Sports Med. 2022 Nov;56(22):1299-1306. doi: 10.1136/bjsports-2021-104749. Epub 2022 Sep 23.

    PubMed 36150752
  • Cugusi L, Manca A, Fischbach E, Secci C, Bergamin M, Gobbo S, DI Blasio A, Montella A, Bandiera P, Deriu F. Low back pain prevalence and risk factors in Italian adolescent male soccer players: results from an online survey. J Sports Med Phys Fitness. 2022 Aug;62(8):1088-1094. doi: 10.23736/S0022-4707.21.12696-9. Epub 2021 Sep 9.

    PubMed 34498823
  • Tunas P, Nilstad A, Myklebust G. Low back pain in female elite football and handball players compared with an active control group. Knee Surg Sports Traumatol Arthrosc. 2015 Sep;23(9):2540-7. doi: 10.1007/s00167-014-3069-3. Epub 2014 May 18.

    PubMed 24839041
  • van Hilst J, Hilgersom NF, Kuilman MC, Kuijer PP, Frings-Dresen MH. Low back pain in young elite field hockey players, football players and speed skaters: Prevalence and risk factors. J Back Musculoskelet Rehabil. 2015;28(1):67-73. doi: 10.3233/BMR-140491.

    PubMed 24968798

Questions about this trial

What is this clinical trial studying?

A study testing Active rehabilitation protocol in people with Spondylolysis Lumbar, run by Western Norway University of Applied Sciences at 3 sites in Norway.

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 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: opening soon, as of the sponsor's last update on 6 May 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 3 sites in Norway. 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?

This study is still under way. Results are not available in the source record yet.

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

Contact Bård E Bogen, Professor (+4791157142, bard.e.bogen@uib.no), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Change in edema on MRI (time frame: Baseline, 3 months and potentially at 6 months.). 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 NCT07430072, which also lists 18 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 6 May 2026.

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