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Parkinson DiseaseCOMPEXNCT04229056

COMPuter-assisted Self-training to Improve EXecutive Function

A study testing Computer-based cognitive rehabilitation (CBCR) and General computer-based cognitive stimulation in people with Parkinson Disease and Stroke, run by Bispebjerg Hospital at 2 sites in Denmark.

Active, not recruiting

Under way, not looking for participants. Everyone needed has enrolled. The study is still running.

Official record
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Trial summary

This project explores the effects of specialized computer-based cognitive rehabilitation (CBCR) targeting executive functions in three groups of patients: Stroke, Cardiac Arrest and Parkinson's Disease. The effect of specialized CBCR is compared to generally cognitively stimulating activities on a computer Read more about this study

Who is it for?
Ages 18 to 100 years
Conditions the study is for
Parkinson Disease, Stroke, Cardiac Arrest
What is being tested?
Computer-based cognitive rehabilitation (CBCR) and General computer-based cognitive stimulation
Could I receive a placebo?
No, everyone receives an active treatment
How many people
307 participants
Where
2 sitesDenmark
Study dates
1 Jun 2020to 5 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 18 to 100 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • A diagnose of stroke, cardiac arrest or Parkinson's disease.
  • Aged 18 years or older.
  • Impaired working memory measured with CABPad working memory test, cut off for inclusion: 5 symbols or less backwards
  • Computer and internet access at home.
  • Providing informed consent.
  • Stroke confirmed by clinical findings and imaging, both AIS and ICH is allowed.
Show all 10Show fewer
  • Initial stroke severity >/= NIHSS 3.
  • Inclusion within 6 months post ictus.
  • Clinical diagnosis of PD.
  • Anti-parkinsonian medical treatment (dopaminergic or other).

Who cannot join

  • Informed consent not provided
  • Other neurological or psychiatric disease which is expected to influence the patient's ability to participate in the trial according to the investigator
  • Not able to participate according to investigator
  • Patients with massive anosognosia for executive dysfunction or patients with no subjective feeling of executive dysfunction (Patient sustains total denial of executive symptoms over time)
  • Patients with severe aphasia, in which it is unclear whether the patient's performance on a neuropsychological test-battery is due to aphasia and not executive dysfunction.
  • Diagnosis of PD Dementia according to the MDS PD Dementia criteria

Trial locations and contacts

2 sites in 1 country.

Denmark2 sites
  • Bispebjerg Hospital

    Copenhagen

  • Rigshospitalet

    Copenhagen

Other trials in Denmark

About this study

Official title: Computer-Assisted Self-Training to Improve Executive Function Versus Unspecific Training in Patients After Stroke, Cardiac Arrest or in Parkinson's Disease: A Randomized Controlled Trial

This project explores the effects of specialized computer-based cognitive rehabilitation (CBCR) targeting executive functions in three groups of patients: Stroke, Cardiac Arrest and Parkinson's Disease. The effect of specialized CBCR is compared to generally cognitively stimulating activities on a computer

Read the detailed description

This project explores the effects of specialized computer-based cognitive rehabilitation (CBCR) targeting executive functions in three groups of patients: Stroke, Cardiac Arrest and Parkinson's Disease. The effect of specialized CBCR is compared to completing generally cognitively stimulating activities on a computer. A total of 307 patients is expected to be enrolled. All patients will complete a neuropsychological test battery assessing executive functions at inclusion, directly after the eight-week training period and at follow-up three months after the end of the intervention period. Furthermore, all patients will answer questionnaires concerning quality of life and ADL-measures at baseline, after the intervention and at follow-up. All patients will train for a period of 8 weeks, 5 times a week for 60 minutes regardless of their group allocation.

Being tested
Computer-based cognitive rehabilitation (CBCR), General computer-based cognitive stimulation
Keywords
parkinson disease, stroke, cardiac arrest, executive dysfunction, cognitive dysfunction, computer-based cognitive rehabilitation
Medical subject headings
Parkinson Disease, Stroke, Heart Arrest, Cognitive Dysfunction

What participants receive

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

  • Computer-based cognitive rehabilitation (CBCR)Behavioural

    CBCR are software-programmes for computers which are clinically developed for rehabilitation of various cognitive functions.

  • General computer-based cognitive stimulationBehavioural

    For this trial we have developed a webpage for general cognitive stimulation, which is designed to provide general computer-based cognitive stimulation.

Study groups in NCT04229056
Study groupRoleWhat they receive
Specific computer-based cognitive rehabilitationExperimental154 patients will be allocated to specific computer-based cognitive rehabilitation. This group will train with 10 exercises from the cognitive rehabilitation software 'Scientific Brain training PRO'. These 10 exercises are designed to train various executive functions.
Receives: Behavioral: Computer-based cognitive rehabilitation (CBCR)
General computer-based cognitive stimulationActive comparator154 patients will be allocated to general computer-based cognitive stimulation. This group will train with 10 generally mentally stimulating games on a website specifically designed for this trial. These 10 games are chosen because they are believed to have a low load on executive functions but stimulate over-all concentration and visuoperceptual abilities.
Receives: Behavioral: General computer-based cognitive stimulation

What is being measured

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

  1. CABPad Working Memory Test

    Test of working memory. The higher score the better (theoretically infinite score)

    Measured: After the end of the intervention (8 weeks after baseline)

Secondary outcomes (27)
  1. CABPad Working Memory Test - 3 months follow-up

    Test of working memory. The higher score the better (theoretically infinite score)

    Measured: At follow-up visit 3 months after end of intervention

  2. Minimum Data Set-Home Care- Instrumental Activities of Daily Living (MDS-HC-IADL)

    Questionnaire concerning activities of daily living. 0-3 points on an 8-item scale, the fewer points the better.

    Measured: At follow-up visit 3 months after the end of the intervention

  3. Trail Making A

    Test of processing speed and visual attention. The lower score the better (theoretically infinite score)

    Measured: Directly after the intervention, eight weeks after inclusion

  4. Trail Making A

    Test of processing speed and visual attention. The lower score the better (theoretically infinite score)

    Measured: At follow-up visit 3 months after the end of the intervention

  5. Trail Making B

    Test of divided attention, mental flexibility. The lower score the better (theoretically infinite score)

    Measured: Directly after the intervention, eight weeks after inclusion

  6. Trail Making B

    Test of divided attention, mental flexibility. The lower score the better (theoretically infinite score)

    Measured: At follow-up visit 3 months after the end of the intervention

  7. SDMT

    Symbol Digit Modalities Test: Test of mental speed. The higher score the better (theoretically infinite score)

    Measured: Directly after the intervention, eight weeks after inclusion

  8. SDMT

    Symbol Digit Modalities Test: Test of mental speed. The higher score the better (theoretically infinite score)

    Measured: At follow-up visit 3 months after the end of the intervention

  9. Phonological verbal fluency test

    Test of verbal phonological fluency. The higher score the better (theoretically infinite score)

    Measured: Directly after the intervention, eight weeks after inclusion

  10. Phonological verbal fluency test

    Test of verbal phonological fluency. The higher score the better (theoretically infinite score)

    Measured: At follow-up visit 3 months after the end of the intervention

  11. Categorical verbal fluency test

    Test of verbal categorical fluency. The higher score the better (theoretically infinite score)

    Measured: Directly after the intervention, eight weeks after inclusion

  12. Categorical verbal fluency test

    Test of verbal categorical fluency. The higher score the better (theoretically infinite score)

    Measured: At follow-up visit 3 months after the end of the intervention

  13. Fear questionnaire

    Questionnaire with 24 items concerning fear on a scale from 0 to 8 where 8 indicates a higher degree of avoidance due to fear

    Measured: Directly after the intervention, eight weeks after inclusion

  14. Fear questionnaire

    Questionnaire with 24 items concerning fear on a scale from 0 to 8 where 8 indicates a higher degree of avoidance due to fear

    Measured: At follow-up visit 3 months after the end of the intervention

  15. mrs: Modified Rankin Scale

    Questionnaire concerning disability on a scale from 0 (no symptoms) to 6 (dead): Higher score indicates more severe disability.

    Measured: Directly after the intervention, eight weeks after inclusion

  16. mrs: Modified Rankin Scale

    Questionnaire concerning disability on a scale from 0 (no symptoms) to 6 (dead). Higher score indicates more severe disability.

    Measured: At follow-up visit 3 months after the end of the intervention

  17. IQCODE (Informant Questionnaire on Cognitive Decline in the Elderly)

    Cognitive decline in the elderly, reported by partner. A scale of 16 items from 1 (much better) to 5 (much worse). Higher score indicates more severe disability.

    Measured: Directly after the intervention, eight weeks after inclusion

  18. IQCODE (Informant Questionnaire on Cognitive Decline in the Elderly)

    Cognitive decline in the elderly, reported by partner. A scale of 16 items from 1 (much better) to 5 (much worse). Higher score indicates more severe disability.

    Measured: At follow-up visit 3 months after the end of the intervention

  19. EuroQol-5 domain (EQ-5D-5L)

    Quality of life scale with 5 domains, each rated from 1-5 indicating slight to severe disability . Higher score indicates more severe disability. Completed by patient and partner

    Measured: Directly after the intervention, eight weeks after inclusion

  20. EuroQol-5 domain (EQ-5D-5L)

    Quality of life scale with 5 domains, each rated from 1-5 indicating slight to severe disability. Higher score indicates more severe disability. Completed by patient and partner

    Measured: At follow-up visit 3 months after the end of the intervention

  21. PDQ 39 (Parkinsons Disease Questionnaire: Only in patients with Parkinson Disease)

    Quality of Life questionnaire in patients with Parkinson's Disease. A scale with 39 items rated from 1 (never) to 5 (all the time / Can not do at all). Higher score indicates more severe disability.

    Measured: Directly after the intervention, eight weeks after inclusion

  22. PDQ 39 (Parkinsons Disease Questionnaire: Only in patients with Parkinsons Disease)

    Quality of Life questionnaire in patients with Parkinson's Disease. A scale with 39 items rated from 1 (never) to 5 (all the time / Can not do at all). Higher score indicates more severe disability.

    Measured: At follow-up visit 3 months after the end of the intervention

  23. Compliance

    Monitoring of total time spent training in minutes

    Measured: Directly after the intervention, eight weeks after inclusion

  24. PHQ-9 (Patient health questionnaire 9)

    Questionnaire about health of patient with 9 items rated on a 4 point scale from 0 (not at all) to 3 (almost every day). Higher score indicates more severe disability.

    Measured: Directly after the intervention, eight weeks after inclusion

  25. PHQ-9 (Patient health questionnaire 9)

    Questionnaire about health of patient with 9 items rated on a 4 point scale from 0 (not at all) to 3 (almost every day). Higher score indicates more severe disability.

    Measured: At follow-up visit 3 months after the end of the intervention

  26. 2) visual analogue scale (1-10)

    After last session: how much they liked doing the training and if they would recommend the intervention to somebody else in their situation. Higher score indicates they liked the training more.

    Measured: Directly after the intervention, eight weeks after inclusion

  27. Minimum Data Set-Home Care- Instrumental Activities of Daily Living (MDS-HC-IADL)

    Questionnaire concerning activities of daily living. 0-3 points on an 8-item scale, the fewer points the better.

    Measured: Directly after the intervention, eight weeks after inclusion

Timeline

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

  1. First posted14 Jan 2020
  2. Study start1 Jun 2020
  3. Primary completion5 Nov 2026 (estimated)
  4. Study completion5 Feb 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
Randomised
Intervention model
Parallel groups
Model description
Two parallel groups will be included in this study
Masking
Single blind
Who is masked
Outcomes assessor
Enrolment
307 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT04229056
Sponsor's protocol ID
H-19039236
Acronym
COMPEX
Status last verified
Sep 2026
First submitted
3 Jan 2020
Last updated
2 Oct 2026
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
Undecided: This is currently undecided

Publications

  • Svaerke K, Christensen L, Lokkegaard A, Kjaergaard J, Jacobsen JC, Engelter S, Modrau B, Quinn T, Traenka C, Sunnerhagen KS, Christensen H. The COMPEX-trial: computer-based cognitive rehabilitation to improve executive function versus unspecific training in patients after stroke, cardiac arrest or in Parkinson's disease: study protocol for a randomized controlled trial. Trials. 2026 Mar 19;27(1):310. doi: 10.1186/s13063-026-09623-5.

    PubMed 41857604

Questions about this trial

What is this clinical trial studying?

A study testing Computer-based cognitive rehabilitation (CBCR) and General computer-based cognitive stimulation in people with Parkinson Disease and Stroke, run by Bispebjerg Hospital at 2 sites in Denmark.

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 10 inclusion and 6 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: under way, not looking for participants, as of the sponsor's last update on 2 Oct 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 2 sites in Denmark. 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?

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?

CABPad Working Memory Test (time frame: After the end of the intervention (8 weeks after baseline)). 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 NCT04229056, which also lists 1 linked publication.

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 2 Oct 2026.

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COMPEX Clinical Trial NCT04229056 | AzTrials