Different Stimulation Patterns to Reduce Muscle Fatigue During FES

September 5, 2018 updated by: NHS Greater Glasgow and Clyde

Investigation of Different Stimulation Patterns to Reduce Muscle Fatigue During Functional Electrical Stimulation (FES)

The main aim of this study is to investigate the effect of patterned distribution stimulation compared to conventional stimulation in reducing muscle fatigue during functional electrical stimulation (FES) following spinal cord injury (SCI).

Study Overview

Status

Terminated

Conditions

Intervention / Treatment

Detailed Description

Functional electrical stimulation (FES) is a commonly used technique in rehabilitation and often associated with rapid muscle fatigue which becomes the limiting factor in its applications. The main objective of this study is to investigate the effects on the onset of fatigue of conventional synchronous stimulation, as well as asynchronous stimulation that mimic voluntary muscle activation targeting different motor units which are activated sequentially or randomly via multiple pairs of stimulation electrodes. Three different approaches with various electrode configurations will be investigated, as well as different patterns of stimulation applied to the gastrocnemius muscle. In addition, the muscle changes during different patterns of stimulation will be evaluated in this study.

Study Type

Interventional

Enrollment (Actual)

4

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United Kingdom
      • Glasgow, United Kingdom
        • Queen Elizabeth National Spinal Injuries Unit

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • incomplete spinal cord injury
  • able to give informed consent
  • able to sit up in a chair

Exclusion Criteria:

  • female subjects who are pregnant
  • significant history of autonomic dysreflexia
  • unable to give informed consent
  • individuals who have a cardiac history
  • individuals who have significant cognitive impairment
  • individuals with muscular abnormality
  • individuals who have significant contractures in the lower extremities
  • individuals who have a rash or infection at the site of electrode placement (gastrocnemius for both legs)
  • individuals who are hypersensitive to electrical stimulation
  • individuals who are presently involved in another study which has overlap with the methodology and/or outcomes of the studies

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Supportive Care
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Group A: CSS & AsynS

Electrical stimulation training on both legs:

Conventional synchronous stimulation (CSS) and Asynchronous Sequential Stimulation (ASynS) - CSS/ASynS
Procedure: CSS/AsynS
16 sessions of training over a 4 week period consisting of repeated intermittent electrical stimulation (300ms On and 700ms Off stimulation) for 10 - 30 minutes. Conventional synchronous stimulation (CSS) on one leg; Asynchronous Sequential Stimulation (ASynS) on the other leg
Experimental: Group B: CSS & AsynR

Electrical stimulation training on both legs:

Conventional synchronous stimulation (CSS) and Asynchronous Random Stimulation (ASynR) - CSS/ASynR
Procedure: CSS/AsynR
16 sessions of training over a 4 week period consisting of repeated intermittent electrical stimulation (300ms On and 700ms Off stimulation) for 10 - 30 minutes. Conventional synchronous stimulation (CSS) on one leg; Asynchronous Random Stimulation (ASynR) on the other leg.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Muscle contraction ability
Time Frame: Baseline to 6 weeks
Change in torque produced during muscle contraction
Baseline to 6 weeks

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Normalized Fatigue Index (NFI)
Time Frame: Baseline to 6 weeks
Change in score on Normalized Fatigue Index (NFI)
Baseline to 6 weeks
Fatigue Time Interval (FTI)
Time Frame: Baseline to 6 weeks
Change in Fatigue Time Interval (FTI)
Baseline to 6 weeks
Twitch-Tetanus Ratio response (ΔTTR)
Time Frame: Baseline to 6 weeks
Change in Twitch-Tetanus Ratio response (ΔTTR)
Baseline to 6 weeks

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

NHS Greater Glasgow and Clyde

Collaborators

University of Glasgow

Investigators

  • Study Director: Henrik Gollee, DipIng PhD, University of Glasgow

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

August 14, 2017

Primary Completion (Actual)

June 30, 2018

Study Completion (Actual)

June 30, 2018

Study Registration Dates

First Submitted

August 16, 2017

First Submitted That Met QC Criteria

August 18, 2017

First Posted (Actual)

August 21, 2017

Study Record Updates

Last Update Posted (Actual)

September 7, 2018

Last Update Submitted That Met QC Criteria

September 5, 2018

Last Verified

September 1, 2018

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • GN17NE114

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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