Effects of Light Emitting Diodes (LED) Therapy in Rugby Athletes

NCT03728439 | Completed DMC

• 1 other identifier: Recovery in rugby athletes
• Study Type: interventional
• Target: 21
• Locations: 1 country
• Sites: 1

Brief Summary

Therapy with light emitting diodes (LED) is a good resource to accelerate the recovery of the athlete and reduce muscle damage caused by exercise. Objective: To evaluate the effects of LED therapy applied at different times on late muscle pain (DOMS), functional performance, inflammatory and ergogenic response of rugby athletes. Methodology: Randomized crossover clinical trial, composed of three groups that will receive treatment with LED at three different times. Sample made up of rugby athletes of both sexes, aged between 18 and 35 years. On the first day of the study, there will be an anamnesis, where the participants will answer questions about personal data, history of injuries and training time, right after the participants receive weight, height, heart rate and measured blood pressure, in addition to collecting a blood sample. to standardize the individual's baseline values. After the initial assessment, participants will be randomized to not receive the LED (CO) or receive LED therapy at three different times: before (Lpré), in the interval (Lin) and after (Lpós) the performance tests. Then, the modified Star Trek Balance Test (SEBTm), the Single Jump Test (SGHT) and the Triple Jump Test (THT) will be performed. After that, the Bangsbo Sprint (BST) test will be performed, followed by the Yo-Yo level 1 intermittent recovery test (Yo-Yo IR1). At the end of this test, the subjects will remain at rest for 10 minutes and will be subjected to the same tests (BST and Yo-Yo IR1) again. They will be measured at the end of the second battery of tests, heart rate, blood pressure, subjective perception of effort, muscle pain threshold, blood samples collected and repeated functional tests. After 48 hours of the performance tests, the blood sample will be collected again, the functional tests carried out and they answered a Stress Recovery Questionnaire for Athletes (RESTQ-Sport-76). At 7, 14 and 21 days after the initial tests, the same test and evaluation protocol will be performed, but the participants will receive LED therapy before, during or after the performance tests, according to their randomization. LED therapy will be performed on the rectus femoris, vastus lateralis and vastus medialis muscles; bilateral femoral, semitendinosus and gastrocnemius biceps.

Conditions

Phototherapy

Keywords

Recovery; Rugby; Phototherapy

Outcome Measures

Primary Outcomes (3)

• Changes in creatine kinase

  Analysis of inflammatory and cellular lesion responses with creatine kinase (IU/L) test.

  Before, immediately after and after 48 hours.

• Bangsbo sprint test

  To quantify the performance of rugby players in the Bangsbo sprint test (seconds).

  During the performance protocol and fatigue performed once a week for four weeks.

• Yo-Yo Intermittent Recovery Test

  To quantify the performance of rugby players in the Yo-Yo Intermittent Recovery Test (meters).

  During the performance protocol and fatigue performed once a week for four weeks.

Secondary Outcomes (4)

• Functional performance in the Star Excursion Balance Test

  Before, immediately after and after 48 hours.

• Functional performance in Single Hop Test and Triple Hop Test

  Before, immediately after and after 48 hours.

• Recovery and psychophysiological stress

  48 hours after performance tests

• Changes in blood lactate

  Before, immediately after the second Yoyo IR1 and 10 minutes after the end of this test.

Study Arms (4)

Before

EXPERIMENTAL

LED applications at the beginning, with a dose of 8 J/cm2, will be performed shortly after the blood collections, with a maximum period of 10 minutes, in which the participants of the other groups should remain in rest passive. At the end of these 10 minutes, a 5 minute warm up will be performed and then the tests will be started.

Device: LED before

Interval

EXPERIMENTAL

The LED therapy applied in the tests interval will be performed after the first block of tests, with a maximum duration of 10 minutes and dose of 8 J/cm2. Then the second block of maximum tests will be performed.

Device: LED interval

After

EXPERIMENTAL

LED applications at the end will be performed 10 minutes after the second battery of tests, also with 8 J/cm2 and in the same muscles irradiated in the other moments of application.

Device: LED after

Baseline

NO INTERVENTION

On that day, participants will not receive any intervention.

Interventions

LED before DEVICE

Phototherapy will be applied through LED therapy equipment, with 15 light emitting diodes that produce 8 joules (J) per diode and 120 joules in total. The muscular regions irradiated will be the quadriceps, hamstrings and triceps sural, with two points of application in each muscle group.

Before

LED interval DEVICE

Phototherapy will be applied through LED therapy equipment, with 15 light emitting diodes that produce 8 joules per diode and 120 joules in total. The muscular regions irradiated will be the quadriceps, hamstrings and triceps sural, with two points of application in each muscle group.

Interval

LED after DEVICE

Phototherapy will be applied through LED therapy equipment, with 15 light emitting diodes that produce 8 joules per diode and 120 joules in total. The muscular regions irradiated will be the quadriceps, hamstrings and triceps sural, with two points of application in each muscle group.

After

Eligibility Criteria

• Age: 18 Years - 35 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

• Individuals practicing rugby;
• Juvenile and adult categories;
• Minimum training of three days per week;
• Without history of musculoskeletal injuries in the lower limbs in the last year;
• Without the use of supplements or medicines.

You may not qualify if:

• Injuries that make it impossible to perform the tests.

Sponsors & Collaborators

• Universidade Estadual de Londrina: lead

Study Sites (1)

University Hospital of the State University of Londrina

Londrina, Paraná, 86038-350, Brazil

Location

Related Publications (5)

• Ferraresi C, Dos Santos RV, Marques G, Zangrande M, Leonaldo R, Hamblin MR, Bagnato VS, Parizotto NA. Light-emitting diode therapy (LEDT) before matches prevents increase in creatine kinase with a light dose response in volleyball players. Lasers Med Sci. 2015 May;30(4):1281-7. doi: 10.1007/s10103-015-1728-3. Epub 2015 Feb 27.

  PMID: 25722067 BACKGROUND

• Leal-Junior EC, Vanin AA, Miranda EF, de Carvalho Pde T, Dal Corso S, Bjordal JM. Effect of phototherapy (low-level laser therapy and light-emitting diode therapy) on exercise performance and markers of exercise recovery: a systematic review with meta-analysis. Lasers Med Sci. 2015 Feb;30(2):925-39. doi: 10.1007/s10103-013-1465-4. Epub 2013 Nov 19.

  PMID: 24249354 BACKGROUND

• Borsa PA, Larkin KA, True JM. Does phototherapy enhance skeletal muscle contractile function and postexercise recovery? A systematic review. J Athl Train. 2013 Jan-Feb;48(1):57-67. doi: 10.4085/1062-6050-48.1.12.

  PMID: 23672326 BACKGROUND

• Nampo FK, Cavalheri V, Ramos Sde P, Camargo EA. Effect of low-level phototherapy on delayed onset muscle soreness: a systematic review and meta-analysis. Lasers Med Sci. 2016 Jan;31(1):165-77. doi: 10.1007/s10103-015-1832-4. Epub 2015 Nov 12.

  PMID: 26563953 BACKGROUND

• Pinto HD, Vanin AA, Miranda EF, Tomazoni SS, Johnson DS, Albuquerque-Pontes GM, Aleixo IO Junior, Grandinetti VD, Casalechi HL, de Carvalho PT, Leal-Junior EC. Photobiomodulation Therapy Improves Performance and Accelerates Recovery of High-Level Rugby Players in Field Test: A Randomized, Crossover, Double-Blind, Placebo-Controlled Clinical Study. J Strength Cond Res. 2016 Dec;30(12):3329-3338. doi: 10.1519/JSC.0000000000001439.

  PMID: 27050245 BACKGROUND

Study Officials

• Christiane Macedo

  State University of Londrina

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: DOUBLE
• Who Masked: INVESTIGATOR, OUTCOMES ASSESSOR
• Purpose: TREATMENT
• Intervention Model: CROSSOVER
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Model Details: This is a randomized crossover (crossover) trial. Participants will be randomized to not receive LED (CO) or have the application of LED therapy at three different times: before (Lpré), in the interval (Lin) and after (Lpós) of the Bangsbo and YoyoIR1 performance tests. At 7, 14 and 21 days after the initial tests, the same test and evaluation protocol will be performed. In addition, 48 hours after each test protocol, functional tests, recovery questionnaire and blood collection will be applied for analysis of creatine kinase.

Study Record Dates

• First Submitted: October 3, 2018
• First Posted: November 2, 2018
• Study Start: February 1, 2019
• Primary Completion: September 10, 2019
• Study Completion: November 30, 2019
• Last Updated: July 13, 2021

Record last verified: 2021-07

Data Sharing

• IPD Sharing: Will not share

Locations

BR (1)