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Phototherapy Applied in Association With Muscular Training

18 oktober 2016 uppdaterad av: Adriane Aver Vanin, University of Nove de Julho

Phototherapy Applied in Association With Muscular Training: Evaluation of Different Moments of Applications

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 three times a week for 12 weeks. There were assessed isometric peak torque in isokinetic dynamometer, concentric peak torque, 1-repetition maximum test in the leg extension and leg press machines and bilateral thigh perimetry.

Studieöversikt

Status

Avslutad

Betingelser

Intervention / Behandling

Detaljerad beskrivning

This is a clinical, randomized, controlled placebo and double-blind study. Forty-eight participants performed muscular training protocol. Subjects practiced a protocol training with 60% of the load followed by 80% of the load, measured through 1-repetition maximum test, in all sessions of the training protocol. The training protocol consisted in performing 3 sets of 7 repetitions with 60% of 1-RM, and 4 set of 7 repetitions with 80% of 1-RM. This protocol was performed in every sessions, three times a week, employing leg press and leg extension machines.

Phototherapy, active or placebo, were applied in 6 different points of anterior muscle of the thigh before and after each training session. Only one investigator, that did not participate in any phase of the assessments and trainings sessions, knew about what program is active or placebo in phototherapy device. Randomisation carried out by a simple drawing of lots (A, B, C, or D) in the first visit. The phototherapy unit emitted the same sound regardless of the program used, active or placebo. Either strength training lasted 12 weeks and assessments were performed at baseline, 4, 8 and 12 weeks. There were evaluated maximal voluntary contraction (MVC), concentric torque, bilateral thigh perimetry and 1-repetition maximum test (1-RM).

Studietyp

Interventionell

Inskrivning (Faktisk)

48

Fas

  • Inte tillämpbar

Kontakter och platser

Det här avsnittet innehåller kontaktuppgifter för dem som genomför studien och information om var denna studie genomförs.

Studieorter

  • Brasilien
    • SP
      • São Paulo, SP, Brasilien, 01504-001
        • Universidade Nove de Julho

Deltagandekriterier

Forskare letar efter personer som passar en viss beskrivning, så kallade behörighetskriterier. Några exempel på dessa kriterier är en persons allmänna hälsotillstånd eller tidigare behandlingar.

Urvalskriterier

Åldrar som är berättigade till studier

18 år till 35 år (Vuxen)

Tar emot friska volontärer

Ja

Kön som är behöriga för studier

Manlig

Beskrivning

Inclusion Criteria:

  • healthy individuals,
  • active, that performed less than two exercise sessions per week
  • when they presented musculoskeletal injury to the hips or knees in the previous 2 months,
  • used pharmacological agents or nutritional supplements regularly, and
  • Subjects that did not attend a minimum rate of 80% of all strength training sessions
  • Suffered musculoskeletal injury during the ongoing of the study were also excluded.

Studieplan

Det här avsnittet ger detaljer om studieplanen, inklusive hur studien är utformad och vad studien mäter.

Hur är studien utformad?

Designdetaljer

  • Primärt syfte: Stödjande vård
  • Tilldelning: Randomiserad
  • Interventionsmodell: Parallellt uppdrag
  • Maskning: Fyrdubbla

Vapen och interventioner

Deltagargrupp / Arm
Intervention / Behandling
Experimentell: Group A - Active or Placebo Phototherapy

Participants enrolled in this group performed a training protocol for 12 weeks with light application before and after the exercise protocol. The phototherapy device 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.
Enhet: Active or Placebo Phototherapy (MR4)
Andra namn:
  • MR4-enhet - enhet som kombinerar superpulsade lasrar och röda och infraröda lysdioder (Multi Radiance Medical, Solon, OH, USA)
Experimentell: Group B - Active or Placebo Phototherapy

Participants enrolled in this group performed a training protocol for 12 weeks with light application before and after the exercise protocol. The phototherapy device 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.
Enhet: Active or Placebo Phototherapy (MR4)
Andra namn:
  • MR4-enhet - enhet som kombinerar superpulsade lasrar och röda och infraröda lysdioder (Multi Radiance Medical, Solon, OH, USA)
Experimentell: Group C - Active or Placebo Phototherapy

Participants enrolled in this group performed a training protocol for 12 weeks with light application before and after the exercise protocol. The phototherapy device 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.
Enhet: Active or Placebo Phototherapy (MR4)
Andra namn:
  • MR4-enhet - enhet som kombinerar superpulsade lasrar och röda och infraröda lysdioder (Multi Radiance Medical, Solon, OH, USA)
Experimentell: Group D - Active or Placebo Phototherapy

Participants enrolled in this group performed a training protocol for 12 weeks with light application before and after the exercise protocol. The phototherapy device 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 D, received program 2 before strength training, and program 2 after training.
Enhet: Active or Placebo Phototherapy (MR4)
Andra namn:
  • MR4-enhet - enhet som kombinerar superpulsade lasrar och röda och infraröda lysdioder (Multi Radiance Medical, Solon, OH, USA)

Vad mäter studien?

Primära resultatmått

Resultatmått
Åtgärdsbeskrivning
Tidsram
Change from baseline Maximum voluntary contraction in the isokinetic dynamometer (MVC) at 12 weeks
Tidsram: 12 weeks
Functional performance measure - performed in baseline, 4 weeks, 8 weeks and 12 weeks after the beginning of the muscular training
12 weeks
Change from baseline Concentric Torque at 12 weeks
Tidsram: 12 weeks
Functional performance measure - performed in baseline, 4 weeks, 8 weeks and 12 weeks after the beginning of the muscular training
12 weeks

Sekundära resultatmått

Resultatmått
Åtgärdsbeskrivning
Tidsram
1-RM test
Tidsram: 12 weeks
Functional performance measure - performed in baseline, 4 weeks, 8 weeks and 12 weeks after the beginning of the muscular training. This test estimated the load of the exercises.
12 weeks

Andra resultatmått

Resultatmått
Åtgärdsbeskrivning
Tidsram
Thigh perimetry
Tidsram: 12 weeks
Muscle mass measure - performed in baseline, 4 weeks, 8 weeks and 12 weeks after the beginning of the muscular training.
12 weeks

Samarbetspartners och utredare

Det är här du hittar personer och organisationer som är involverade i denna studie.

Sponsor

University of Nove de Julho

Samarbetspartners

Fundação de Amparo à Pesquisa do Estado de São Paulo

Utredare

  • Studierektor: Ernesto Leal-Junior, PhD, University of Nove de Julho

Publikationer och användbara länkar

Den som ansvarar för att lägga in information om studien tillhandahåller frivilligt dessa publikationer. Dessa kan handla om allt som har med studien att göra.

Allmänna publikationer

Studieavstämningsdatum

Dessa datum spårar framstegen för inlämningar av studieposter och sammanfattande resultat till ClinicalTrials.gov. Studieposter och rapporterade resultat granskas av National Library of Medicine (NLM) för att säkerställa att de uppfyller specifika kvalitetskontrollstandarder innan de publiceras på den offentliga webbplatsen.

Studera stora datum

Studiestart

1 mars 2016

Primärt slutförande (Faktisk)

1 augusti 2016

Avslutad studie (Faktisk)

1 oktober 2016

Studieregistreringsdatum

Först inskickad

11 mars 2016

Först inskickad som uppfyllde QC-kriterierna

16 mars 2016

Första postat (Uppskatta)

22 mars 2016

Uppdateringar av studier

Senaste uppdatering publicerad (Uppskatta)

20 oktober 2016

Senaste inskickade uppdateringen som uppfyllde QC-kriterierna

18 oktober 2016

Senast verifierad

1 oktober 2016

Mer information

Termer relaterade till denna studie

Nyckelord

Andra studie-ID-nummer

  • PhD437.894

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