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Clinical Trial Details — Status: Not yet recruiting

Administrative data

NCT number NCT05822297
Other study ID # CoBes22.055
Secondary ID
Status Not yet recruiting
Phase N/A
First received
Last updated
Start date January 2024
Est. completion date September 2024

Study information

Verified date December 2023
Source Adelante, Centre of Expertise in Rehabilitation and Audiology
Contact Wouter Vints, MD
Phone +31455282828
Email wouter.vints@adelantegroep.nl
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

Rationale: Individuals with spinal cord injury (SCI) suffer from accelerated cognitive aging. In able-bodied individuals, a vast amount of studies have shown that exercise interventions can improve cognitive function. Myokines (i.e. factors released into the blood stream from muscle cells) are considered one of the mediators of this beneficial effect. Neuromuscular electrical stimulation (NMES), used to replace or support muscle training in disabled individuals with poor exercise possibilities, was shown to elicit a large release of myokines (in some studies larger than following voluntary exercise). However, so far, the effects of NMES on cognitive function have never been studied before. In fact, only one study has previously investigated the effect of exercise on cognitive function in persons with SCI. Objective: The primary aim is to assess to what extent a 12 week intervention with NMES to the quadriceps muscles of people with SCI can change their performance on a set of cognitive tests. Secondarily, the investigators will measure to what extent NMES to the quadriceps muscles of people with SCI induces changes in blood levels of the myokine brain-derived neurotrophic factor (BDNF), which is considered a potential mediator of the exercise-cognition effect, facilitating neuroplastic processes. Study design: A single case experimental design (SCED) with sequential multiple baseline time series and a single-armed prospective study design, with a random duration of the baseline phase ranging from 3 to 6 weeks, an intervention phase of 12 weeks, and a 12 week period without measurements, followed by a follow-up phase of 3 weeks; in addition to a single-armed prospective study design. Study population: Individuals (n = 15) aged 18 years and older with a chronic SCI (>1y post-injury) and with visible or palpable contraction of the quadriceps muscles upon NMES will be recruited at the rehabilitation centre of Adelante in Hoensbroek, the Netherlands. Intervention: The study participants will receive 30min of NMES using surface electrodes on the quadriceps muscles three times per week for a total duration of 12 weeks. Main study parameters/endpoints: The primary outcome is cognitive function changes which will be measured using a secured smartphone application (e.g. m-Path). Secondary outcome measures are changes in the blood myokine levels of BDNF and changes in cognitive outcome scores on an verbal cognitive test battery.


Recruitment information / eligibility

Status Not yet recruiting
Enrollment 15
Est. completion date September 2024
Est. primary completion date September 2024
Accepts healthy volunteers No
Gender All
Age group 18 Years and older
Eligibility Inclusion Criteria: - Persons with spinal cord injury - Completeness of injury: American Spinal Injury Association (ASIA) Impairment Scale (AIS) A, B or C - Level of injury: L2 or higher - At least 18 years old - Chronic stage (> 1 year) since injury - No previous surgery to the quadriceps muscles - Intact hand function - Able to use apps on smartphone (i.e. participants should have their own smartphone and should not have disabilities that impair them to operate it independently) - Able to follow the instructions of placing the surface electrodes of the NMES device correctly or to have someone else put the electrodes for them - Dutch as a native language Exclusion Criteria: - Malignant processes, or history of undergoing chemotherapy, or history of radiotherapy to the head - No visible or palpable contraction of the quadriceps muscle upon electrical stimulation - Intolerance to electrical stimulation of the quadriceps muscle - Recent or current participation in an electrical stimulation-induced exercise or therapy program in which regular electrical stimulation was given (up to 6 months prior to study inclusion) - Known neurodegenerative disorder, such as Alzheimer's disease or Parkinson's disease - Known psychiatric disorder, such as major depressive disorder or bipolar disorder - Current pressure ulcer - History of severe autonomic dysreflexia - Metal implants in the electrical stimulation area - Intrathecal baclofen (ITB) device - Pregnancy

Study Design


Intervention

Device:
Neuromuscular electrical stimulation
NMES will consist of a 12 week electrical stimulation program, three times a week. Electrical stimulation will be done on the quadriceps muscles of both legs simultaneously. For each leg, one electrode is placed on the proximal side and one on the distal side of the quadriceps muscle. Electrical stimulation sessions will take 30min, at a stimulation frequency of 50Hz, an intensity where we can at least see a visible or palpable contraction with a maximum intensity of 100mA (we will choose the highest intensity that is easily supported by the participant without inducing discomfort) and a pulse width of 400µs. The activation within the activation-rest cycle consists of a 1s ramp-up, 7s full activation and 1s ramp-down, followed by 18s rest. Every 4 weeks the rest period will be diminished with 3s until a total of 9s.

Locations

Country Name City State
Netherlands Adelante Zorggroep Maastricht Limburg

Sponsors (1)

Lead Sponsor Collaborator
Adelante, Centre of Expertise in Rehabilitation and Audiology

Country where clinical trial is conducted

Netherlands, 

Outcome

Type Measure Description Time frame Safety issue
Primary Change in executive function response time (in ms) on the momentary digital symbol substitution task measured a total of 54-63 times in 30-33 weeks time
Secondary Neurocognitive test battery, change in cognitive scores A neurocognitive test battery will be used to assess cognitive changes on various cognitive domains over time before and after the 12 week intervention and after a 12 week follow-up
Secondary Concentration of brain-derived neurotrophic factor (BDNF) Brain-derived neurotrophic factor will be measured in blood of the participants before and after the 12 week intervention and after a 12 week follow-up
Secondary Self-perceived cognitive function measured using the cognitive failures index (CFI), ranging from 0-100, with a higher score indicating more subjective cognitive problems before and after the 12 week intervention and after a 12 week follow-up
Secondary Pain score measured using the McGill Pain Questionnaire (MPQ), ranging from 0-78, with a higher score indicating higher subjective pain level before and after the 12 week intervention and after a 12 week follow-up
Secondary Fatigue measured using the Fatigue Severity Scale (FSS), ranging from 1-7, with a higher score indicating more fatigue/higher impact of fatigue on daily activities before and after the 12 week intervention and after a 12 week follow-up
Secondary Participation in daily life activities measured using the Utrecht Scale for Evaluation of Rehabilitation-Participation (USER-P), ranging from 0-100, with a higher score indicating larger participation in daily life activities before and after the 12 week intervention and after a 12 week follow-up
Secondary Spasticity measured using the Perceived Resistance to Passive Movement (PRPM) test at all four limbs. before and after the 12 week intervention
Secondary Electrically-evoked quadriceps strength measured using the MicroFET2 dynamometer before and after the 12 week intervention
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