NCT04934709

Photobiomodulation Therapy Combined With Static Magnetic Field on the Subsequent Performance

Immediate Effects of Photobiomodulation Therapy Combined With Static Magnetic Field on the Subsequent Performance: a Randomized Crossover Triple-blinded Placebo-controlled Trial

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 12 (actual)
• Sponsor: University of Nove de Julho · Academic / Other
• Sex: Male
• Age: 18 Years – 35 Years
• Healthy volunteers: Accepted

Summary

There is evidence about the effects of photobiomodulation therapy (PBMT) alone and combined with static magnetic field (PBMT-sMF) on skeletal muscle fatigue, physical performance and post-exercise recovery in different types of exercise protocols and sports activity. However, it is unknown the effects of PBMT-sMF to improve the subsequent performance after a first set of exercise. Therefore, the aim of this study was to investigate the effects of PBMT-sMF, applied between two sets of exercises, on the subsequent physical performance.

Detailed description

A randomized, crossover, triple-blinded (assessors, therapist and volunteers), placebo-controlled trial was carried out. Healthy non-athletes' male volunteers were randomized and treated with a single application of PBMT-sMF and placebo between two sets of an exercise protocol performed on isokinetic dynamometer. The order of interventions was randomized. The primary outcome was fatigue index, measured by isokinetic dynamometer during the exercise protocol. The secondary outcomes were total work and peak torque measured by isokinetic dynamometer during the exercise protocol; and blood lactate, measured by blood samples collected before, 3 minutes after the first set of the exercise protocol, 3 minutes after the application of the intervention and 3 minutes after the second set of the exercise protocol. Statistical analysis: The findings were tested for normality using the Kolmogorov-Smirnov test and were determined to have a normal distribution. Data were expressed as the mean and standard deviation, and a two-way repeated measures ANOVA was performed to test between-group differences at each timepoint (treatment effects), mean difference (MD) and 95% confidence intervals (CI), followed by the Bonferroni post hoc test. The significance level was set at p \< 0.05.

Conditions

• Skeletal Muscle Performance

Interventions

Type	Name	Description
DEVICE	Active PBMT-sMF	PBMT-sMF was applied employing the Multi Radiance Medical Super Pulsed Laser MR4 console (Solon, Ohio, USA) with a LaserShower cluster probe as emitter. Six different sites of the knee extensor muscles (two medial, two lateral and two central points) were irradiated at the same time.
DEVICE	Placebo PBMT-sMF	Placebo PBMT-sMF was applied employing the Multi Radiance Medical Super Pulsed Laser MR4 console (Solon, Ohio, USA) with a LaserShower cluster probe as emitter, but without any emission of therapeutic dose. Placebo PBMT-sMF was applied at six different sites of the knee extensor muscles (two medial, two lateral and two central points).

Timeline

• Start date: 2015-05-01
• Primary completion: 2015-09-01
• Completion: 2015-09-01
• First posted: 2021-06-22
• Last updated: 2021-06-22

Locations

1 site across 1 country: Brazil

Regulatory

• FDA-regulated device study