Can photobiomodulation improve quadriceps strength and endurance outcomes in asymptomatic adults? A double-blind randomized controlled trial.

Autor: Serighelli F; UNIOESTE - Universidade Estadual do Oeste do Paraná, CCBS - Centro de Ciências Biológicas e da Saúde, Cascavel, Paraná, Brazil; La Trobe University, La Trobe Sport and Exercise Medicine Research Centre, Melbourne, Victoria, Australia. Electronic address: serighellif.8@gmail.com., De Oliveira Silva D; La Trobe University, La Trobe Sport and Exercise Medicine Research Centre, Melbourne, Victoria, Australia., Reginato GA; UNIOESTE - Universidade Estadual do Oeste do Paraná, CCBS - Centro de Ciências Biológicas e da Saúde, Cascavel, Paraná, Brazil., Pocai BL; UNIOESTE - Universidade Estadual do Oeste do Paraná, CCBS - Centro de Ciências Biológicas e da Saúde, Cascavel, Paraná, Brazil., Vieira DD; UNIOESTE - Universidade Estadual do Oeste do Paraná, CCBS - Centro de Ciências Biológicas e da Saúde, Cascavel, Paraná, Brazil., Carvalho AR; UNIOESTE - Universidade Estadual do Oeste do Paraná, CCBS - Centro de Ciências Biológicas e da Saúde, Cascavel, Paraná, Brazil.
Jazyk: angličtina
Zdroj: Journal of bodywork and movement therapies [J Bodyw Mov Ther] 2024 Jan; Vol. 37, pp. 94-100. Date of Electronic Publication: 2023 Nov 22.
DOI: 10.1016/j.jbmt.2023.11.025
Abstrakt: Aim: To explore the effect of photobiomodulation on quadriceps strength and endurance torques in asymptomatic adults.
Methods: Twenty-eight asymptomatic adults were randomized to one of two interventions: photobiomodulation (n = 14) or sham (n = 14). Quadriceps strength was evaluated by maximum voluntary isometric contraction test (60°) and endurance by an elastic resistance in multiple-set knee extension/flexion repetitions using a traction dynamometer. The outcomes were measured at three time points: pre-baseline; baseline and; final assessment. The photobiomodulation was applied to the quadriceps and triceps surae muscles of each participant's dominant lower limb, using a cluster with 1 infrared laser diode and 3 led amber of 170 mW for 240 s over four consecutive days. The sham group went through the same procedures, but the equipment was off, and patients and assessors were blinded to the intervention. Reliability and minimal detectable change of the measures were obtained from the pre-baseline and baseline time points. Differences between interventions were tested by an analysis of covariance.
Results and Discussion: There was no difference between photobiomodulation compared to sham in maximum isometric torque (mean difference (95% CI) = 0.008 (-0.29 to 0.31) and endurance torques (mean difference (95% CI) = 0.04 (-0.03 to 0.12). The mean difference was lower than the minimal detectable change for the maximum isometric torque (1.02 Nm.kg -1 ) and endurance torque (0.49 Nm.kg -1 ).
Conclusion: Photobiomodulation does not improve quadriceps strength and endurance outcomes in asymptomatic adults.
Competing Interests: Declaration of competing interest None.
(Copyright © 2023 The Authors. Published by Elsevier Ltd.. All rights reserved.)
Databáze: MEDLINE
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