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Usability and Acceptability Study of a Functional Electro-stimulator Controlled by Electromyographic Signal (FitFES)

Pilot Study of Usability and Acceptability for the Optimization of a Functional Electrical Stimulator Controlled by Electromyographic Signal for the Rehabilitation of the Upper Limb in Persons Post-stroke

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06763874
Enrollment
20
Registered
2025-01-08
Start date
2025-01-14
Completion date
2025-02-25
Last updated
2025-02-28

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Healthy Health Care Professionals, Stroke

Keywords

Stroke, Functional electrical stimulation, Feasibility, Usability, Medical device

Brief summary

Functional recovery of the upper limb after a cerebral stroke is one of the major critical issues in rehabilitation. The advent of innovative technologies can be helpful to rehabilitators and intervene where there is no other solution but a clear therapeutic indication. The use of functional electrostimulators can actively and functionally support movements, helping people affected by stroke to complete a motor gesture taking into account their residual capacities.

Detailed description

FitFES is a wearable and non-invasive device that provides continuous stimulation set according to the residual myoelectric activity of hemiparetic muscles. Its bioinspired functioning has been implemented to restore the neurophysiological feedback from the muscles to the central nervous system while performing voluntary movements. This study aims to assess the usability, acceptability, and satisfaction of this device by post-stroke subjects and healthcare workers. Ten post-stroke subjects and ten healthy health care workers will be recruited. Participants will take part in a single session where they are going to execute motor tasks of daily living with the support of the FitFES. At the end of session participants will fill out questionnaires. Collected results will serve as input for further development of the FitFES device, based on the requests and opinions of participants, to obtain a final version of the device that will be used in a randomized controlled study.

Interventions

DEVICEEMG-based FES device

One session of one hour to execute task-oriented exercises with the upper limb while wearing the EMG-based FES device. Submission of questionnaires related to usability, acceptance and satisfaction of the device.

Sponsors

Istituto Italiano di Tecnologia
CollaboratorOTHER
Fondazione Don Carlo Gnocchi Onlus
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
OTHER
Masking
NONE

Intervention model description

A single-session usability study: ten stroke patients and ten experienced healthcare workers will test the device to evaluate its design and operability.

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes

Inclusion criteria

Stroke Inclusion Criteria: * Age equal to or greater than 18 years * Diagnosis of first ischemic or hemorrhagic unilateral stroke for at least two weeks Stroke

Exclusion criteria

* Mini Mental State Examination (corrected for age and schooling) \< 24 * Clinical evidence of visuospatial disorders, ideomotor apraxia, behavioral disorders, neglect, severe visual and auditory sensory disorders that prevent the use of the device * Major head trauma * Cardio-respiratory or internal clinical instability * Pregnancy * Severe spasticity (Ashworth scale \> 3) * Skin integrity issues on the surface interfaced with the device * Implanted electronic devices * Epilepsy * Severe peripheral neuropathies Healthy health care professionals inclusion criteria: * Age equal to or greater than 18 years Healthy health care professionals

Design outcomes

Primary

MeasureTime frameDescription
Unified Theory of Acceptance and Use of Technology (UTAUT)At the end of the single test session (the session is 60 minutes)A questionnaire asking how acceptable and easy to use the technological device is. The theoretical model of UTAUT suggests that the actual use of technology is determined by behavioural intention. The perceived likelihood of adopting the technology is dependent on the direct effect of four key constructs, namely performance expectancy, effort expectancy, social influence, and facilitating conditions. The UTAUT examines the acceptance of technology, determined by the effects of performance expectancy, effort expectancy, social influence and facilitating conditions.
System Usability Scale (SUS)At the end of the single test session (the session is 60 minutes)The SUS assesses Usability and Acceptability of a device. The SUS consists of a 10 item questionnaire with five response options for respondents, from strongly agree to strongly disagree.

Secondary

MeasureTime frameDescription
Rating of Perceived Exertion/Borg 6-20 (RPE)At the end of the single test session (the session is 60 minutes)Perception of the overall and of the upper limb stress. The scale rates exertion from a scale of 6 (no exertion) to 20 (maximum effort).
Report of adverse eventsAt the end of the single test session (the session is 60 minutes)Organized reporting of adverse events occurring during the use of the device
Semi-structured interviewsAt the end of the single test session (the session is 60 minutes)Open-answer questionnaires related to the use of the FES device, its application in rehabilitation and the subjects perception of device usability
Stroke Rehabilitation Motivation Scale (7-item SRMS)At the end of the single test session (the session is 60 minutes)Motivational impact of the rehabilitation approach used The 7-item SRMS was devised from the 28-item SRMS and inquires upon intrinsic and extrinsic motivation domains for rehabilitation. Scores range from 1 to 7 so the total score can range from 7-35 with higher scores indicating higher motivation.

Other

MeasureTime frameDescription
Demographic data and professional background informationAt the start of the single test session (the session is 60 minutes)Age, gender, scholarity, professional background

Countries

Italy

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026