Immediate effects of photobiomodulation therapy combined with a static magnetic field on the subsequent performance: a preliminary randomized crossover triple-blinded placebo-controlled trial.

Autor:	Aleixo-Junior IO; Laboratory of Phototherapy and Innovative Technologies in Health (LaPIT), Post-graduate Program in Rehabilitation Sciences, Nove de Julho University, São Paulo, Brazil., Leal-Junior ECP; Laboratory of Phototherapy and Innovative Technologies in Health (LaPIT), Post-graduate Program in Rehabilitation Sciences, Nove de Julho University, São Paulo, Brazil.; Physiotherapy Research Group, Department of Global Public Health and Primary Care, University of Bergen, Bergen, Norway.; ELJ Consultancy, Scientific Consultants, São Paulo, Brazil., Casalechi HL; Laboratory of Phototherapy and Innovative Technologies in Health (LaPIT), Post-graduate Program in Rehabilitation Sciences, Nove de Julho University, São Paulo, Brazil., Vanin AA; Laboratory of Phototherapy and Innovative Technologies in Health (LaPIT), Post-graduate Program in Rehabilitation Sciences, Nove de Julho University, São Paulo, Brazil., de Paiva PRV; Laboratory of Phototherapy and Innovative Technologies in Health (LaPIT), Post-graduate Program in Rehabilitation Sciences, Nove de Julho University, São Paulo, Brazil., Machado CDSM; Laboratory of Phototherapy and Innovative Technologies in Health (LaPIT), Post-graduate Program in Rehabilitation Sciences, Nove de Julho University, São Paulo, Brazil., Dias LB; Laboratory of Phototherapy and Innovative Technologies in Health (LaPIT), Post-graduate Program in Rehabilitation Sciences, Nove de Julho University, São Paulo, Brazil., Lino MMA; Laboratory of Phototherapy and Innovative Technologies in Health (LaPIT), Post-graduate Program in Rehabilitation Sciences, Nove de Julho University, São Paulo, Brazil., Teixeira AM; Laboratory of Phototherapy and Innovative Technologies in Health (LaPIT), Post-graduate Program in Rehabilitation Sciences, Nove de Julho University, São Paulo, Brazil., Johnson DS; Multi Radiance Medical, Solon, Ohio, OH 44139, USA., Tomazoni SS; Physiotherapy Research Group, Department of Global Public Health and Primary Care, University of Bergen, Bergen, Norway.
Jazyk:	angličtina
Zdroj:	Biomedical optics express [Biomed Opt Express] 2021 Oct 15; Vol. 12 (11), pp. 6940-6953. Date of Electronic Publication: 2021 Oct 15 (Print Publication: 2021).
DOI:	10.1364/BOE.442075
Abstrakt:	There is evidence about the effects of photobiomodulation therapy (PBMT) alone and combined with a 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, the effects of PBMT-sMF to improve the subsequent performance after a first set of exercises are unknown. 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. A randomized, crossover, triple-blinded (assessors, therapist, and volunteers), placebo-controlled trial was carried out. Healthy non-athlete 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 and the secondary outcomes were total work, peak work, and blood lactate levels. Twelve volunteers were randomized and analyzed to each sequence. PBMT-sMF decreased the fatigue index compared to the placebo PBMT-sMF at second set of the exercise protocol (MD = -6.08, 95% CI -10.49 to -1.68). In addition, PBMT-sMF decreased the blood lactate levels post-intervention, and after the second set of the exercise protocol compared to placebo (p<0.05). There was no difference between PBMT-sMF and placebo in the remaining outcomes tested. Volunteers did not report adverse events. Our results suggest that PBMT-sMF is able to decrease skeletal muscle fatigue, accelerating post-exercise recovery and, consequently, increasing subsequent physical performance when applied between two sets of exercises. Competing Interests: ECPLJ: Multi Radiance Medical (F,C,P), DSJ: Multi Radiance Medical (I,E,P,R), SST has a personal relationship with ECPLJ. The remain authors declare no conflict of interest. (© 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement.)
Databáze:	MEDLINE
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