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NCT Number: NCT07098572

Comparison of Four-Channel Functional Electrical Stimulation vs. One-Channel Electrical Stimulation on Moderate Arm/Hand Paresis in Subacute Stroke Patients

This study will compare two treatments that may help participants recover after having suffered from stroke. Persons who experience weakness or paralysis of their arms/hands will be randomly placed in one of two groups. Each receives treatment five times a week for three weeks. One group will be treated with electrostimulation following a cyclic pattern (control treatment), the other group will be treated with electrostimulation triggered by nerve signals (i.e. stimulation starts when they deliberately try to move their arm (investigational treatment). Before and after the three weeks and additionally 12 weeks later, the ability to move the arm and hand will be documented with standardized tests.

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Key information

Age range

18 year–99 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

KABEG Gailtal-Klinik LKH Hermagor, Hermagor, Carinthia, Austria

Loading trial locations.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • First-time ischemic stroke with moderate arm paresis (Motricity Index - UE Sum-Score ≥ 40 ≤ 77 points) (Collin & Wade, 1990)
  • Early to late subacute phase (7 days - 6 months) (Bernhardt et al., 2017)
  • Existing ADL ability before the event (ICF d5 self-care, d6 domestic life, extent of problem ≤1 points) (WHO, 2001)
  • Age ≥18 - 99 years
  • Signed and dated ICF before the start of any study-specific procedure.

Exclusion criteria

  • Lack of compliance with any inclusion criteria
  • Implanted defibrillators, brain stimulators, pacemakers, medication pumps
  • Therapy-resistant epilepsy
  • Fever or infectious diseases
  • Inflammatory or tumorous skin diseases in the stimulation area,
  • Thromboses or vein inflammations
  • Severe contractures of the affected extremity
  • Wounds in the stimulation area
  • Pregnancy
  • Known allergic reactions to components of the investigational medical device
  • Unstable psychological status
  • Participation in other pharmacological clinical investigations within four weeks prior to enrolment
  • Anything that, in the opinion of the Investigator, would place the subject at increased risk or preclude the subject's full compliance with or completion of the study

Treatment and study plan

Cyclic single channel neuromuscular stimulation

Device

Cyclic single channel neuromuscular stimulation is used to trigger repetitive muscular contractions

Electromyogram-triggered 4 channel neuromuscular stimulation

Device

EMG-MES provides biofeedback by using electromyographic signals to trigger muscular contractions

Other names: EMG-MES

Primary outcomes

  1. Stroke Impact Scale (SIS) subscale Recovery

    Time frame: pre-intervention to 3 weeks

    Scores between 0 and 100, higher meaning a better outcome

Secondary outcomes

  1. Stroke Impact Scale (SIS), subscale strength

    Time frame: pre-intervention to 3 weeks

    Scores between 0 and 100, higher meaning a better outcome

  2. Stroke impact scale (SIS) subscale Activities of Daily Living (ADL) / Instrumental Activities of Daily Living (IADL)

    Time frame: pre-intervention to 3 weeks

    Scores between 0 and 100, higher meaning a better outcome

  3. Stroke impact scale (SIS) subscale mobility

    Time frame: pre-intervention to 3 weeks

    Scores between 0 and 100, higher meaning a better outcome

  4. Stroke impact scale (SIS) subscale hand function

    Time frame: pre-intervention to 3 weeks

    Scores between 0 and 100, higher meaning a better outcome

  5. Fugl-Meyer Assessment - upper extremity (FMA-UE)

    Time frame: pre-intervention to 3 weeks

    Scores between 0 and 100, higher meaning a better outcome

  6. Action Research Arm Test (ARAT)

    Time frame: pre-intervention to 3 weeks

    Scores between 0 and 57, higher meaning a better outcome

  7. Safety assessment

    Time frame: through study completion, an average of 15 weeks

    Assessment of device related adverse events

Study contacts

Contact information is provided by the study sponsor or research team.

Florian Schwarze, PhD

CONTACT

[email protected]

+435 77 88

Sponsors and collaborators

Lead sponsor

MED-EL Elektromedizinische Geräte GesmbH

Industry

Registry information

Official study title

Efficacy of EMG-triggered Four-Channel Functional Electrical Stimulation vs. Cyclic One-Channel Electrical Stimulation on Moderate Arm/Hand Paresis in Subacute Stroke Patients. A Randomized Controlled Single Blinded Multicenter Study

Acronym: MKES2

Important dates

Study start
2025
Primary completion
2028
Study completion
2028
First posted
Aug 1, 2025
Registry last updated
Aug 26, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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