Influence of Power and Wavelength on Photobiomodulation Therapy for Muscle Performance in Healthy Subjects

NCT04809415 | Completed

• 1 other identifier: DifPower
• Study Type: interventional
• Target: 42
• Locations: 1 country
• Sites: 1

Brief Summary

In recent years, photobiomodulation has been studied as a means of increasing muscle performance in athletes and healthy individuals. This is possible due to the physiological changes that photobiomodulation therapy can promote. Moreover, given a large number of existing studies on the subject, some directions for future research have been established. For example, future research was established, the relationship between power and time because with high power, it will achieve the same energy with shorter application times. However, irradiation may not be offered for the minimum recommended time. Therefore, this study aims to compare different powers and, consequently, different application times for muscle performance in healthy individuals. For this, 42 participants will be recruited, males between 18 to 40 years old, without recent musculoskeletal injury or cardiorespiratory problems. The participants will participate in 3 evaluations containing functional and physiological variables and ten training sessions of lower limbs with previous photobiomodulation therapy application, comparing devices with a power of 0.864W and 1.864W. 0.864W and 1.2W. Lower limbs training will be composed of stiff and squat exercises twice a week, for five weeks. In the pre- and post-intervention evaluations, the following parameters will be evaluated isokinetic apparatus, body composition, and functionality of the vertical jump. For data analysis, we will use a normality test to verify the distribution and statistical tests will be used for intra and intra and intergroup comparisons, considering two factors in the comparisons time and group. A significance level of 5% will be adopted.

Conditions

Low Level Laser Therapy; Photobiomodulation; Performance; Sport

Keywords

Physical Therapy; Photobiomodulation; Muscle Strength; Power; Athletic Performance

Outcome Measures

Primary Outcomes (1)

• Difference of maximal voluntary contraction

  The study was designed to detect a difference of maximal voluntary contraction between the groups, following the interventions

  1 year

Study Arms (3)

Sham Group (G-S)

SHAM COMPARATOR

The LED blanket will be positioned across the quadriceps and hamstring bilaterally, however, there will be no light emission. However, the volunteer will perform the strength training protocol.

Other: Sham

300J Infrared Blanket LED Group (Blanket-300J)

EXPERIMENTAL

The LED blanket with a wavelength of 940nm, energy of 300J, will be applied across the quadriceps and hamstrings bilaterally, just before the strength training protocol.

Other: Photobiomodulation

300J Infrared Cluster LED Group (Cluster-300J)

EXPERIMENTAL

The LED Cluster with a wavelength of 850 nm, energy of 300 J, will be applied to the quadriceps (5 points) and hamstrings (5 points), bilaterally, just before the strength training protocol.

Other: Photobiomodulation

Interventions

Photobiomodulation OTHER

Photobiomodulation consists of irradiation by light in order to achieve photochemical and photophysical outcomes.

300J Infrared Blanket LED Group (Blanket-300J); 300J Infrared Cluster LED Group (Cluster-300J)

Sham OTHER

Simulation of the application of photobiomodulation therapy.

Sham Group (G-S)

Eligibility Criteria

• Age: 18 Years - 40 Years
• Sex: male
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

• \- healthy individuals;

You may not qualify if:

• musculoskeletal injury in the last three months;
• cardiovascular diseases;
• use of anabolic, anti-inflammatory and analgesic drugs 72 hours before the evaluations;
• use of alcohol and illicit drugs during the collection period;

Sponsors & Collaborators

• University of Sao Paulo: lead

Study Sites (1)

University of Sao Paulo

Ribeirão Preto, São Paulo, 14049-900, Brazil

Location

Related Publications (3)

• American College of Sports Medicine. American College of Sports Medicine position stand. Progression models in resistance training for healthy adults. Med Sci Sports Exerc. 2009 Mar;41(3):687-708. doi: 10.1249/MSS.0b013e3181915670.

  PMID: 19204579 BACKGROUND

• Ferraresi C, Beltrame T, Fabrizzi F, do Nascimento ES, Karsten M, Francisco Cde O, Borghi-Silva A, Catai AM, Cardoso DR, Ferreira AG, Hamblin MR, Bagnato VS, Parizotto NA. Muscular pre-conditioning using light-emitting diode therapy (LEDT) for high-intensity exercise: a randomized double-blind placebo-controlled trial with a single elite runner. Physiother Theory Pract. 2015 Jul;31(5):354-61. doi: 10.3109/09593985.2014.1003118. Epub 2015 Jan 14.

  PMID: 25585514 BACKGROUND

• Anders JJ, Lanzafame RJ, Arany PR. Low-level light/laser therapy versus photobiomodulation therapy. Photomed Laser Surg. 2015 Apr;33(4):183-4. doi: 10.1089/pho.2015.9848. No abstract available.

  PMID: 25844681 BACKGROUND

MeSH Terms

Interventions

Low-Level Light Therapy; salicylhydroxamic acid

Intervention Hierarchy (Ancestors)

Laser Therapy; Therapeutics; Phototherapy

Study Officials

• Carlos E Girasol, Student

  University of Sao Paulo

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: TRIPLE
• Who Masked: PARTICIPANT, INVESTIGATOR, OUTCOMES ASSESSOR
• Purpose: OTHER
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Professor

Study Record Dates

• First Submitted: March 17, 2021
• First Posted: March 22, 2021
• Study Start: May 1, 2021
• Primary Completion: December 31, 2021
• Study Completion: October 1, 2022
• Last Updated: October 21, 2022

Record last verified: 2022-10

Data Sharing

• IPD Sharing: Will not share

Locations

BR (1)