Phototherapy Applied in Association With Strength Training

NCT02474602 | Completed DMC

• 2 other identifiers: Nove de Julho University2013/19355-3
• Study Type: interventional
• Target: 48
• Locations: 1 country
• Sites: 1

Brief Summary

The effects of phototherapy has been widely studied by some research groups. The investigators know that there are positive results with light application to improve muscle performance and delay fatigue. However, there are few studies showing its´ effects on muscular training. Therefore, the aim of this study was to assess the effects of phototherapy applied at different times during 12 weeks of strength training. For such, 48 volunteers, healthy male, from 18 to 35 years old were recruited to perform a strength training protocol for the anterior muscle of the thigh development. Volunteers performed the training protocol twice a week for 12 weeks. There were assessed isometric peak torque in isokinetic dynamometer, 1-repetition maximum test in the leg extension and leg press machines and bilateral thigh perimetry.

Conditions

Muscle Development in Association to Phototherapy

Keywords

phototherapy; strength training; photobiostimulation; muscle development

Outcome Measures

Primary Outcomes (1)

• Maximum voluntary contraction in the isokinetic dynamometer (MVC)

  Functional performance measure

  12 weeks

Secondary Outcomes (2)

• 1-Repetition Maximum test in the leg press and leg extension machines (1-RM)

  12 weeks

• Thigh perimetry

  12 weeks

Study Arms (4)

Group A - Active or Placebo Phototherapy

EXPERIMENTAL

The phototherapy was divided in program 1 and program 2. One of these programs consisted in active phototherapy and the other placebo. The subjects allocated in group A, received program 1 before strength training, and the same program 1 after training.

Device: Active or Placebo Phototherapy (MR4)

Group B - Active or Placebo Phototherapy

EXPERIMENTAL

The phototherapy was divided in program 1 and program 2. One of these programs consisted in active phototherapy and the other placebo. The subjects allocated in group B, received program 1 before strength training, and program 2 after training.

Device: Active or Placebo Phototherapy (MR4)

Group C - Active or Placebo Phototherapy

EXPERIMENTAL

The phototherapy was divided in program 1 and program 2. One of these programs consisted in active phototherapy and the other placebo. The subjects allocated in group C, received program 2 before strength training, and program 1 after training.

Device: Active or Placebo Phototherapy (MR4)

Group D - Active or Placebo Phototherapy'

EXPERIMENTAL

The phototherapy was divided in program 1 and program 2. One of these programs consisted in active phototherapy and the other placebo. The subjects allocated in group B, received program 2 before strength training, and the same program 2 after training.

Device: Active or Placebo Phototherapy (MR4)

Interventions

Active or Placebo Phototherapy (MR4) DEVICE

Participants performed a strength training. Forty-eight subjects practiced a training protocol with 80% of the load, measured through 1-repetition maximum test. The strength training lasted 12 weeks and the evaluations were done monthly. Phototherapy, active or placebo, were applied in 6 different points of quadriceps muscle depending the group randomized, before and after each training session.

Also known as: MR4 device - device that combines super-pulsed lasers, and red and infrared LEDs (Multi Radiance Medical, Solon, OH, USA)

Group A - Active or Placebo Phototherapy; Group B - Active or Placebo Phototherapy; Group C - Active or Placebo Phototherapy; Group D - Active or Placebo Phototherapy'

Eligibility Criteria

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

You may qualify if:

• There were included in the study
• healthy individuals,
• active,
• aged between 18 and 35 years old,
• male,
• presenting no history of musculoskeletal injury in the regions of the hip and knee in the two months prior to the study.
• that are not making use of pharmacological agents and / or nutritional supplements, and
• that have at least 80% of attendance to training.

You may not qualify if:

• The participants were excluded if they
• present some musculoskeletal injury during the study

Sponsors & Collaborators

• University of Nove de Julho: lead
• Fundação de Amparo à Pesquisa do Estado de São Paulo: collaborator

Study Sites (1)

Nove de Julho University

São Paulo, São Paulo, 01504-001, Brazil

Location

Related Publications (3)

• 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

• Seynnes OR, de Boer M, Narici MV. Early skeletal muscle hypertrophy and architectural changes in response to high-intensity resistance training. J Appl Physiol (1985). 2007 Jan;102(1):368-73. doi: 10.1152/japplphysiol.00789.2006. Epub 2006 Oct 19.

  PMID: 17053104 RESULT

• Antonialli FC, De Marchi T, Tomazoni SS, Vanin AA, dos Santos Grandinetti V, de Paiva PR, Pinto HD, Miranda EF, de Tarso Camillo de Carvalho P, Leal-Junior EC. Phototherapy in skeletal muscle performance and recovery after exercise: effect of combination of super-pulsed laser and light-emitting diodes. Lasers Med Sci. 2014 Nov;29(6):1967-76. doi: 10.1007/s10103-014-1611-7. Epub 2014 Jun 19.

  PMID: 24942380 RESULT

Study Officials

• Ernesto Cesar P Leal Junior, PhD

  University of Nove de Julho

  STUDY DIRECTOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: QUADRUPLE
• Who Masked: PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
• Purpose: SUPPORTIVE CARE
• Intervention Model: SINGLE GROUP
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: MS

Study Record Dates

• First Submitted: June 11, 2015
• First Posted: June 18, 2015
• Study Start: June 1, 2014
• Primary Completion: July 1, 2015
• Study Completion: August 1, 2015
• Last Updated: February 4, 2016

Record last verified: 2016-02

Locations

BR (1)