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Effect of Light-emitting Diode (LED) Photobiomodulation Therapy on Muscular Fatigue in University Handball Athletes

NCT03972007 · Status: UNKNOWN · Phase: NA · Type: INTERVENTIONAL · Enrollment: 32

Last updated 2021-03-22

No results posted yet for this study

Summary

Introduction: Low-intensity laser therapy (LBI) is a therapeutic modality with a large number of clinical studies in recent years, taking into account its effectiveness in tissue repair, pain control and, more recently, to increase performance. It is known that LED therapy has immediate effects. Therefore, analyzing the TLED in the infrared spectrum for acute responses at different times along with fatigue resistance capabilities, heart rate variability and biochemical response to fatigue in handball athletes becomes necessary. Objective: To analyze the acute effects of LED phototherapy (940nm) on fatigue resistance and recovery after strenuous exercises of university athletes. Method: The study sample will consist of 32 and 36 male athletes, for biceps brachii and quadriceps femoris, respectively. The athletes will be randomly assigned into four groups: Immediate TLED (TLED-I), TLED 15Min (TLED-15), Immediate Sham (Sham-I) and Sham 15Min (Sham-15). The tests performed will involve bioimpedance evaluation, blood lactate, electromyographic analysis and evaluation of maximum voluntary contraction by means of the maximal repetition test (1RM). Thus, the TLED will be applied on the muscle group to be evaluated, unilaterally, the same tests being repeated in the sequence. For analysis of the data, normality test will be used to verify the distribution and adequate statistical tests for the appropriate intra and intergroup comparisons, being considered two factors in the comparisons, time and group. A significance level of 5% will be adopted.

Conditions

  • Muscular Injury

Interventions

DEVICE

Fotobiomodulation

A 16x28 cm LED blanket containing 160 LEDs will be used and will use a total energy per area of 60J, with a wavelength of 940nm, just before the muscle fatigue protocol and will be applied throughout the Biceps extension.

Sponsors & Collaborators

  • University of Sao Paulo

    lead OTHER

Principal Investigators

  • Rinaldo RJ Guirro · University of Sao Paulo

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
TRIPLE
Model
CROSSOVER

Eligibility

Min Age
18 Years
Max Age
30 Years
Sex
MALE
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2019-05-18
Primary Completion
2021-06-01
Completion
2021-10-01

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 NCT03972007 on ClinicalTrials.gov