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Low Level Laser Therapy in Muscle Fatigue and Muscle Recovery

NCT01844271 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 28

Last updated 2014-12-08

No results posted yet for this study

Summary

Muscle fatigue and muscle recovery after exercise are recent areas of research involving Low Level Laser Therapy (LLLT) and many factors remain unknown, such as optimal doses, power and application parameters, mechanisms of action, effects on long-term exercise and the long-term effects on skeletal muscle recovery.

The present research project aims to assess the effects of long-term recovery of LLLT in skeletal muscle after exercise and identify the optimal dose application of LLLT.

After defining the best dose of application, we recruited two groups which will be irradiated with different power, 100mW and 400mW in order to seek the optimal parameter of low level laser therapy in performance.

The investigators believed that the Low Level Laser Therapy can delay the physiological process of muscle fatigue, reduce injury or skeletal muscle microdamage arising from physical effort and accelerate muscle recovery after exercise.

Conditions

  • Muscle; Fatigue, Heart
  • Skeletal Muscle Recovery

Interventions

DEVICE

Low Level Laser (LLL)

Comparison of different dosages of a Low Level Laser applied in six different locations of the knee extensor muscles of the lower limb non-dominant before a strenuous exercise. We performed stretching and warming up of the muscles involved, assessment of muscle pain, withdrawal of blood sample, test muscle function (MVC), application of dose of low level laser designated for each volunteer (0, 2, 6 or 10), performing eccentric contractions protocol in isokinetic dynamometer . After the protocol we evaluated muscle function, the DOMS, and blood analyzes in 1 minute, 1 hour, 24 hours, 48 hours 72 hours and 96 hours. In a second stage, the optimal dose defined by the first part of the study will be tested in two different powers, 100 and 400mW. The study was repeated in two experimental groups using the optimal dose established and the powers of 100 and 400mW that was randomly distributed in groups.

Sponsors & Collaborators

  • Fundação de Amparo à Pesquisa do Estado de São Paulo

    collaborator OTHER_GOV

  • University of Nove de Julho

    lead OTHER

Principal Investigators

  • Adriane A Vanin, PT · Nove de Julho University

Study Design

Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
DOUBLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Max Age
35 Years
Sex
MALE
Healthy Volunteers
No

Timeline & Regulatory

Start
2013-05-31
Primary Completion
2013-09-30
Completion
2013-12-31

Countries

  • Brazil

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT01844271 on ClinicalTrials.gov