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

This study has been completed.
Sponsor:
Collaborator:
Conselho Nacional de Desenvolvimento Científico e Tecnológico
Information provided by:
Universidade Federal de Sao Carlos
ClinicalTrials.gov Identifier:
NCT01391195
First received: July 7, 2011
Last updated: July 12, 2011
Last verified: December 2005
  Purpose

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.


Condition Intervention Phase
Healthy
Device: Phototherapy by low level laser therapy
Phase 1

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Efficacy Study
Intervention Model: Parallel Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: Effects of Low Level Laser Therapy (808nm) on Muscle Performance of Young Women Submitted to Physical Training

Resource links provided by NLM:


Further study details as provided by Universidade Federal de Sao Carlos:

Primary Outcome Measures:
  • Fatigue Index of knee extensor muscles [ Time Frame: nine weeks ] [ Designated as safety issue: No ]
    Fatigue Index of knee extensor muscles assessed in isokinetic dynamometry.

  • Ventilatory threshold [ Time Frame: nine weeks ] [ Designated as safety issue: No ]
    Ventilatory threshold quantified by a gas analyzer.

  • VO2max [ Time Frame: nine weeks ] [ Designated as safety issue: No ]
    VO2max quantified by a gas analyzer.

  • VO2peak [ Time Frame: nine weeks ] [ Designated as safety issue: No ]
    VO2peak quantified by a gas analyzer.

  • Maximum load of effort on cycle ergometer (Balke's protocol). [ Time Frame: nine weeks ] [ Designated as safety issue: No ]
    Maximum load of effort on cycle ergometer quantified in Watts.


Secondary Outcome Measures:
  • Total work of knee extensor muscles [ Time Frame: nine weeks ] [ Designated as safety issue: No ]
    Total work of knee extensor muscles assessed in isokinetic dynamometry

  • Peak torque of knee extensor muscles [ Time Frame: nine weeks ] [ Designated as safety issue: No ]
    Peak torque of knee extensor muscles assessed in isokinetic dynamometry

  • Borg scale [ Time Frame: nine weeks ] [ Designated as safety issue: No ]
    Subjective effort perception assessed by Borg scale

  • Heart rate [ Time Frame: nine weeks ] [ Designated as safety issue: No ]
    Heart Rate assessed by cardiac frequency meter


Enrollment: 45
Study Start Date: January 2006
Study Completion Date: October 2007
Primary Completion Date: April 2007 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
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
  • Laser therapy
  • Low level laser therapy

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.

  Eligibility

Ages Eligible for Study:   18 Years to 28 Years
Genders Eligible for Study:   Female
Accepts Healthy Volunteers:   Yes
Criteria

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
  Contacts and Locations
Please refer to this study by its ClinicalTrials.gov identifier: NCT01391195

Locations
Brazil
Universidade Federal de Sao Carlos
São Carlos, São Paulo, Brazil, 13565-905
Sponsors and Collaborators
Universidade Federal de Sao Carlos
Conselho Nacional de Desenvolvimento Científico e Tecnológico
Investigators
Principal Investigator: Wouber Hérickson B Vieira, PhD Universidade Federal de Sao Carlos
Study Director: Nivaldo A Parizotto, PhD Universidade Federal de Sao Carlos
Principal Investigator: Cleber Ferraresi, Ms Universidade Federal de Sao Carlos
  More Information

Publications:

Responsible Party: Wouber Hérickson de Brito Vieira, Federal University of São Carlos
ClinicalTrials.gov Identifier: NCT01391195     History of Changes
Other Study ID Numbers: CAAE - 0100.0.135.000-05
Study First Received: July 7, 2011
Last Updated: July 12, 2011
Health Authority: Brazil: National Committee of Ethics in Research

Keywords provided by Universidade Federal de Sao Carlos:
low level laser therapy
muscle performance
fatigue index
endurance training
ventilatory threshold
VO2Max
VO2Peak

ClinicalTrials.gov processed this record on April 15, 2014