Effects of Low Level Laser Therapy (808nm) on Muscle Performance of Young Women Submitted to Physical Training

July 12, 2011 updated by: Universidade Federal de Sao Carlos
The study hypothesis is an increase in muscle performance and a higher aerobic adaptation of young women submitted to chronic endurance training program associated to low level laser therapy when compared to chronic aerobic training alone.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

The study assessed women muscle performance in isokinetic dynamometry, ventilatory parameters such as ventilatory threshold, VO2Peak, VO2Max, Ventilation. Maximal load in cycle ergometer test (Balke's protocol), Borg Scale and Heart rate were assessed too.

Study Type

Interventional

Enrollment (Actual)

45

Phase

  • Phase 1

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
    • São Paulo
      • São Carlos, São Paulo, Brazil, 13565-905
        • Universidade Federal de Sao Carlos

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 28 years (Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

Female

Description

Inclusion Criteria:

  • healthy young women volunteers
  • women with a beginner or moderately trained pattern of physical activity
  • body Mass Index (BMI) between 18 and 25kg/m2

Exclusion Criteria:

  • previous injury to the femoral quadriceps or hamstrings muscles (within 6 months prior to study)
  • osseous or articular disorder in the lower limbs
  • cardiovascular system disorders or systemic 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: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Laser therapy and aerobic capacity
Effects of low level laser therapy on aerobic capacity of young women submitted to endurance training
Device: Phototherapy by low level laser therapy
Phototherapy by low level laser therapy during 9 weeks
Other Names:
  • Laser
  • Low level laser therapy
  • Laser therapy

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Fatigue Index of knee extensor muscles
Time Frame: nine weeks
Fatigue Index of knee extensor muscles assessed in isokinetic dynamometry.
nine weeks
Ventilatory threshold
Time Frame: nine weeks
Ventilatory threshold quantified by a gas analyzer.
nine weeks
VO2max
Time Frame: nine weeks
VO2max quantified by a gas analyzer.
nine weeks
VO2peak
Time Frame: nine weeks
VO2peak quantified by a gas analyzer.
nine weeks
Maximum load of effort on cycle ergometer (Balke's protocol).
Time Frame: nine weeks
Maximum load of effort on cycle ergometer quantified in Watts.
nine weeks

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Total work of knee extensor muscles
Time Frame: nine weeks
Total work of knee extensor muscles assessed in isokinetic dynamometry
nine weeks
Peak torque of knee extensor muscles
Time Frame: nine weeks
Peak torque of knee extensor muscles assessed in isokinetic dynamometry
nine weeks
Borg scale
Time Frame: nine weeks
Subjective effort perception assessed by Borg scale
nine weeks
Heart rate
Time Frame: nine weeks
Heart Rate assessed by cardiac frequency meter
nine weeks

Collaborators and Investigators

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

Sponsor

Universidade Federal de Sao Carlos

Collaborators

Conselho Nacional de Desenvolvimento Científico e Tecnológico

Investigators

  • Study Director: Nivaldo A Parizotto, PhD, Universidade Federal de Sao Carlos
  • Principal Investigator: Wouber Hérickson B Vieira, PhD, Universidade Federal de Sao Carlos
  • Principal Investigator: Cleber Ferraresi, Ms, Universidade Federal de Sao Carlos

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

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

January 1, 2006

Primary Completion (Actual)

April 1, 2007

Study Completion (Actual)

October 1, 2007

Study Registration Dates

First Submitted

July 7, 2011

First Submitted That Met QC Criteria

July 8, 2011

First Posted (Estimate)

July 11, 2011

Study Record Updates

Last Update Posted (Estimate)

July 13, 2011

Last Update Submitted That Met QC Criteria

July 12, 2011

Last Verified

December 1, 2005

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • CAAE - 0100.0.135.000-05

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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