Evidence map›Paper›PMID 18649044›Full record

Trial reportLasers in medical science2009

Effect of 830 nm low-level laser therapy in exercise-induced skeletal muscle fatigue in humans.

Ernesto Cesar Pinto Leal Junior, Rodrigo Alvaro Brandão Lopes-Martins, Adriane Aver Vanin, Bruno Manfredini Baroni, Douglas Grosselli, Thiago De Marchi, Vegard V Iversen, Jan Magnus Bjordal

4 registry-linked trialsAbstract readRandomized Controlled Trial
PubMed Publisher
In one paragraph

Trial report in Lasers in medical science, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 4 registered trials, which are not on this map. Cited by 83 papers, 11 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
83citing papers in PubMed, 11 pooled it
6.9field-weighted citation impact, top 3% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT01113021 phase1completednot on this map

Phase 1. Muscle Genic Expression Under Strength Training and Photostimulated by Laser.

TypeinterventionalSponsorUniversidade Federal de Sao CarlosConditionsHealthy Young Male Volunteers, Non Athletes, Free of Metabolic Disease, Joint, Bone and Muscles of Lower Limbs Free of Any DiseaseArmsPhoton stimulation by low level laser therapy
NCT01391195 phase1completednot on this map

Effects of Low Level Laser Therapy (808nm) on Muscle Performance of Young Women Submitted to Physical Training

TypeinterventionalSponsorUniversidade Federal de Sao CarlosRan2006 to 2007Enrolled45ConditionsHealthyArmsPhototherapy by low level laser therapy
NCT01889784 naunknown statusnot on this mapstarted 2013, after this paper: background citation

Evaluation of Acute Effect of Phototherapy With Light Emitting Diode (LED) on Muscle and Pulmonary Oxygen Consumption in Patients With Diabetes Mellitus

TypeinterventionalSponsorAparecida Maria CataiRan2013 to 2017Enrolled60ConditionsType 2 Diabetes MellitusArmsPhototherapy through light emitting diode (LED) - 150J, Placebo phototherapy - 150J, Phototherapy through light emitting diode (LED) - 300J, Placebo phototherapy - 300J
NCT03461731 nacompletednot on this mapstarted 2017, after this paper: background citation

Investigation of the Role of 905-nm Laser Light in the Delay of Muscle Fatigue

TypeinterventionalSponsorCollege of CharlestonRan2017 to 2017Enrolled29ConditionsMuscle FatigueArmsControl, 800 nm laser, combination laser, 905 nm laser
3 · Its place in the literature

Who cites it

83 citing papers in PubMed, 11 syntheses or guidelines pooled it, 171 citations in OpenAlex.

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23 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 4 institutions in 2 countries.

Ernesto Cesar Pinto Leal JuniorLaboratory of Human Movement (LMH), University of Caxias do Sul, Rua Francisco Getúlio Vargas, 1130, Caxias do Sul, 95070-560, Rio Grande do Sul, Brazil. ecplealj@ucs.br
Rodrigo Alvaro Brandão Lopes-Martins
Adriane Aver Vanin
Bruno Manfredini Baroni
Douglas Grosselli
Thiago De Marchi
Vegard V Iversen
Jan Magnus Bjordal
Universidade de Caxias do Sul · BRUniversidade de São Paulo · BRUniversity of Bergen · NOWestern Norway University of Applied Sciences · NO

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

This study aimed to investigate the effect of 830 nm low-level laser therapy (LLLT) on skeletal muscle fatigue. Ten healthy male professional volleyball players entered a crossover randomized double-blinded placebo-controlled trial. Active LLLT (830 nm wavelength, 100 mW output, spot size 0.0028 cm(2), 200 s total irradiation time) or an identical placebo LLLT was delivered to four points on the biceps humeri muscle immediately before exercises. All subjects performed voluntary biceps humeri contractions with a load of 75% of the maximum voluntary contraction (MVC) force until exhaustion. After active LLLT the mean number of repetitions was significantly higher than after placebo irradiation [mean difference 4.5, standard deviation (SD) +/- 6.0, P = 0.042], the blood lactate levels increased after exercises, but there was no significant difference between the treatments. We concluded that 830 nm LLLT can delay the onset of skeletal muscle fatigue in high-intensity exercises, in spite of increased blood lactate levels.

Indexed as

AdolescentAdultCross-Over StudiesDouble-Blind MethodExercise TestHumansInfrared RaysLactic AcidLow-Level Light TherapyMaleMuscle FatigueMuscle, SkeletalVolleyballYoung AdultLactic Acid

Identifiers

PMID18649044
OpenAlexW2092428697

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.