Stimulus Phase Duration on Discomfort and Electrically Induced Torque of Quadriceps Femoris

August 31, 2016 updated by: Richard Eloin Liebano, Universidade Cidade de Sao Paulo

The Influence of Stimulus Phase Duration on Discomfort and Electrically Induced Torque of Quadriceps Femoris

This study aims to examine the variation in muscle torque and discomfort produced when electrically stimulating quadriceps femoris using pulsed current with three different phase durations in order to establish whether there are any advantages or disadvantages in varying the phase duration over the range examined.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

38

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
    • SP
      • Sao Paulo, SP, Brazil, 03071-000
        • Universidade Cidade de Sao Paulo

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 to 35 years (Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

Female

Description

Inclusion Criteria:

  • sedentary healthy university students.

Exclusion Criteria:

  • history of knee surgery or injury,
  • musculoskeletal, cardiovascular or neurological disease including impaired sensation.

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

  • Allocation: Randomized
  • Interventional Model: Crossover Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: 400 microseconds
Electrically-induced torque generated with stimulus phase duration set at 400 microseconds.
Device: 400 microseconds
Neuromuscular electrical stimulation with stimulus phase duration of 400 microseconds
Experimental: 700 microseconds
Electrically-induced torque generated with stimulus phase duration set at 700 microseconds.
Device: 700 microseconds
Neuromuscular electrical stimulation with stimulus phase duration of 700 microseconds
Experimental: 1000 microseconds
Electrically-induced torque generated with stimulus phase duration set at 1000 microseconds.
Device: 1000 microseconds
Neuromuscular electrical stimulation with stimulus phase duration of 1000 microseconds

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Torque
Time Frame: During 4 seconds of electrical stimulation
Torque will be measured using an isokinetic dynamometer. Torque will be registered in Newton meter [N.m]
During 4 seconds of electrical stimulation

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Discomfort
Time Frame: During 6 seconds of electrical stimulation
Discomfort will be measured using a 10 cm visual analogue scale (VAS) ranging from zero (no discomfort) to 10 (worst discomfort imaginable).
During 6 seconds of electrical stimulation

Collaborators and Investigators

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

Sponsor

Universidade Cidade de Sao Paulo

Investigators

  • Principal Investigator: Richard E Liebano, PhD, Universidade Cidade de Sao Paulo

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

August 1, 2008

Primary Completion (Actual)

December 1, 2008

Study Completion (Actual)

December 1, 2008

Study Registration Dates

First Submitted

May 17, 2013

First Submitted That Met QC Criteria

May 21, 2013

First Posted (Estimate)

May 24, 2013

Study Record Updates

Last Update Posted (Estimate)

September 1, 2016

Last Update Submitted That Met QC Criteria

August 31, 2016

Last Verified

August 1, 2016

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • CAAE - 0081.0.186.000-07

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

Undecided

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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