Functional Electrical Stimulation in Cardiac Patients

March 12, 2014 updated by: Prof. Dr. Antônio Marcos Vargas da Silva

Effects of Functional Electrical Stimulation on Physical Performance of Patients in Cardiac Rehabilitation

The purpose of this study was to determine the effects of Functional Electrical Stimulation (FES) on physical performance and quality of life of patients in cardiac rehabilitation.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

This randomized controlled trial aimed to evaluate the effects of functional electrical stimulation (FES) in patients with stage II and III cardiac rehabilitation (CR) on the variables strength, endurance and muscle tropism lower limb, functional capacity and quality of life. To this were invited to participate in the study cardiac patients registered in the database of the cardiology department of the University Hospital of Santa Maria. The sample included patients of both sexes undergoing coronary artery bypass grafting or valve replacement. The subjects were divided into two groups: placebo group (PG) or functional electrical stimulation group (FESG). To verify the effect of this intervention, before and after the protocol patients underwent the following evaluations: one repetition maximum test, sit-and-stand test, perimetry thighs, the six-minute walk test and evaluate the quality of life through The Medical questionnaire Study 36-item Short-Form Health Survey (SF-36).

Study Type

Interventional

Enrollment (Actual)

20

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

  • Brazil
    • Rio Grande do Sul
      • Porto Alegre, Rio Grande do Sul, Brazil, 90040-060
        • Federal University of Rio Grande do Sul
      • Porto Alegre, Rio Grande do Sul, Brazil, 90050-170
        • Federal University of Health Sciences of Porto Alegre
      • Santa Maria, Rio Grande do Sul, Brazil, 97105-900
        • Federal University of Santa Maria

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

21 years to 80 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Patients in phase II and III of cardiac rehabilitation undergoing coronary artery bypass grafting or valve replacement

Exclusion Criteria:

  • Patients with some cognitive impairment that prevents the completion of assessments, inability to understand the term of free and informed consent or with the following contraindications to the use of FES: epidermal lesions at the site of application, change of skin sensitivity or intolerance electrical stimulator;
  • Patients undergoing cardiac surgery other than coronary artery bypass grafting or valve replacement;
  • Patients who use pacemakers;
  • Subjects with peripheral vascular changes in the lower limbs;
  • Presence of comorbidities such as chronic obstructive pulmonary disease (COPD), cerebrovascular disease or skeletal muscle disease.

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: Treatment
  • Allocation: Randomized
  • Interventional Model: Single Group Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Functional Electrical Stimulation

Functional Electrical Stimulation

In the intervention group the FES was applied in the medial and lateral vastus of both thighs targeting the movement of knee extension. The application frequency was 15 Hz, lasting 40 minutes, pulse width of 0.5 ms, time ON 5s, time OFF 10s, ramp-up of 0 or 1s, descent ramp 2s and intensity as tolerance patient.
Device: Functional Electrical Stimulation
Functional electrical stimulation twice per week for eight weeks totaling sixteen sessions.
Other Names:
  • FES
Experimental: FES placebo

Functional Electrical Stimulation placebo

The placebo group received functional electrical stimulation with the same parameters in the intervention group, except that the intensity of stimulation did not lead to visible or palpable contraction.
Device: Functional Electrical Stimulation placebo
Functional electrical stimulation in the sensory threshold level, twice a week for eight weeks, totaling sixteen sessions.
Other Names:
  • FES placebo

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Distance on the six minute walk test
Time Frame: Two Years
Two Years

Secondary Outcome Measures

Outcome Measure
Time Frame
Lower limb muscle strength measured by the load (kg) sustained in one repetition maximum test
Time Frame: Two years
Two years
Quality of life through The Medical Study 36-Item Short-Form Health Survey (SF-36) questionnaire
Time Frame: Two years
Two years
Lower limb muscle tropism evaluated by measuring the thigh circumference by tape
Time Frame: Two years
Two years
Lower limb muscle endurance assessed by sit-and-stand test
Time Frame: Two years
Two years

Collaborators and Investigators

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

Sponsor

Prof. Dr. Antônio Marcos Vargas da Silva

Investigators

  • Principal Investigator: Antônio M Vargas da Silva, PhD, Universidade Federal de Santa Maria

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

September 1, 2010

Primary Completion (Actual)

June 1, 2011

Study Completion (Actual)

June 1, 2012

Study Registration Dates

First Submitted

February 26, 2014

First Submitted That Met QC Criteria

March 12, 2014

First Posted (Estimate)

March 14, 2014

Study Record Updates

Last Update Posted (Estimate)

March 14, 2014

Last Update Submitted That Met QC Criteria

March 12, 2014

Last Verified

March 1, 2014

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • FESCP01

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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