NCT05785000

Brief Summary

This project evaluates and quantifies the effects of an individually tailored exercise program applied to patients with long-lasting symptoms after concussion, minor traumatic brain injury, so-called Post-Concussion Syndrome (PCS). The project investigates the phenomenon Post Concussion Syndrome in four dimensions with a focus on both patient perspectives of PCS, an interventional physical program, a neurobiological basis for PCS through Magnetic Resonance Imaging (MRI) and finally through a 360-degree evaluation of the entire project involving patients and scientists in a reflective process.

Trial Health

57
Monitor

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
70

participants targeted

Target at P50-P75 for not_applicable

Timeline
Completed

Started Feb 2023

Typical duration for not_applicable

Geographic Reach
1 country

1 active site

Status
recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Start

First participant enrolled

February 1, 2023

Completed
1 month until next milestone

First Submitted

Initial submission to the registry

March 6, 2023

Completed
21 days until next milestone

First Posted

Study publicly available on registry

March 27, 2023

Completed
2.4 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

August 1, 2025

Completed
8 months until next milestone

Study Completion

Last participant's last visit for all outcomes

April 1, 2026

Completed
Last Updated

January 22, 2026

Status Verified

April 1, 2025

Enrollment Period

2.5 years

First QC Date

March 6, 2023

Last Update Submit

January 20, 2026

Conditions

Keywords

Mild traumatic brain injuryBrain functionMagnetic Resonance ImagingBuffalo Concussion Bike TestPatient perception360-degree evaluation

Outcome Measures

Primary Outcomes (1)

  • Change in Buffalo Concussion Bike Test from baseline measurement to week 12

    Buffalo Concussion Bike Test is an individualized bike test designed to measure the number of minutes that the patient can cycle without symptom aggrevation. The test is stopped when symptoms worsen judged by VAS, BORG RPE and pulse rate. The result is measured in minutes

    Change in Buffalo Concussion Bike Test at week 12

Secondary Outcomes (20)

  • Changes in Rivermead Post Concussion Questionaire from baseline to week 12

    Change in point score at week 12

  • Changes in Fatique Scale Questionaire from baseline to week 12

    Change in point score at week 12

  • Change in Buffalo Concussion Bike Test from baseline measurement to week 4

    Change in Buffalo Concussion Bike Test at week 4

  • Change in Buffalo Concussion Bike Test from baseline to week 8

    Change in Buffalo Concussion Bike Test at week 8

  • Description of patient perspectives of living with PCS

    Assessed at week 12

  • +15 more secondary outcomes

Study Arms (2)

Aerobe graded physical exercise intervention and usual care

EXPERIMENTAL

Physical exercise program. The experimental programme is an add-on to usual care and consists of an aerobe graded exercise program performed twice a week for 12 weeks. Usual care includes all public treatments that each patient is assigned to at entry to REPCon. The provision of officially available treatments follow the Danish Health Care Act.

Other: Physical exercise programme as an add-on

Usual care

PLACEBO COMPARATOR

No physical exercise program in a patient control group with PCS. This group continues with usual care, but all clinical test, interviews and MRI protocol are the same.

Other: Control patients receiving usual care

Interventions

No exercise intervention

Usual care

Consists of an individually tailored bike exercise program guided by symptoms, pulse rate and patient specific judgement of exertion monitored also by BORG RPE and VAS and progressively increasing time and level of resistance below symptom provocation

Aerobe graded physical exercise intervention and usual care

Eligibility Criteria

Age18 Years - 70 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Post concussion syndrome (PCS) diagnose according to WHO ICD-10 classification and documented by written statement from physician veritying a mild traumatic brain injury
  • Longer lasting symptoms for at least 4 weeks after initial trauma
  • If allocated to add-on exercise protocol participant must feel able to prioritize the intervention structure
  • Communication language must be Danish

You may not qualify if:

  • Other diseases blurring the diagnose PCS
  • Other serious brain diseases
  • Severe cardiovascular diseases precluding physical activity according to protocol

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

University College Copenhagen

Copenhagen, Region of Greater Copenhagen, 1799, Denmark

RECRUITING

MeSH Terms

Conditions

Post-Concussion SyndromeBrain Concussion

Condition Hierarchy (Ancestors)

Head Injuries, ClosedCraniocerebral TraumaTrauma, Nervous SystemNervous System DiseasesWounds and InjuriesWounds, NonpenetratingBrain Injuries, TraumaticBrain InjuriesBrain DiseasesCentral Nervous System Diseases

Study Officials

  • Henrik BW Larsson, Professor

    Faculty of Health and Medical Science, University of Copenhagen, Denmark

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Henrik BW Larsson, Professor

CONTACT

Mette K Zebis, PhD

CONTACT

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
OUTCOMES ASSESSOR
Masking Details
The assessors of outcomes at the end of the project are different to the assessors of clinical test at entry to the project
Purpose
TREATMENT
Intervention Model
PARALLEL
Model Details: Patients are recruited through our professional networks, via clinics, hospital emergency departments, general practitioners, physiotherapeutic clinics, flyers at educational institutions and patient associations. Inclusion age is 18-70 years, both genders. PCS symptoms of at least 4 weeks persistence after initial trauma and patients must be able to document the traumatic brain event from either emergency room or other medical doctor. Exclusion criteria: other diseases interfering with presentation of PCS symptoms. Up to fifty healthy controls are included only in the MRI part. Healthy controls are recruited by advertising in public media. This part of the project is also constituted as a separate case control study comparing PCS patients and healthy controls Seventy patients with PCS are randomized to either intervention as an add on to usual care or to control. Randomization is performed as a block-randomization with permuted block of size 2-6 generated via computer.
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Consultant, professor

Study Record Dates

First Submitted

March 6, 2023

First Posted

March 27, 2023

Study Start

February 1, 2023

Primary Completion

August 1, 2025

Study Completion

April 1, 2026

Last Updated

January 22, 2026

Record last verified: 2025-04

Data Sharing

IPD Sharing
Will not share

Locations