The influence of photobiomodulation on the temperature of the brachial biceps during muscle fatigue protocol

Stamborowski, Sadi Fernando; Spinelli, Bruna Moreira de Oliveira; Lima, Fernanda Pupio Silva; Costa, Davidson Ribeiro; Souza, Gabriela Aparecida de Silveira; Lima, Mário Oliveira; Lopes-Martins, Rodrigo Álvaro Brandão

doi:10.1007/s10103-021-03360-8

Cited by 9 publications

(4 citation statements)

References 27 publications

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“…LLL intervention can also inhibit the activities of reactive oxygen species/reactive nitrogen species series, which interfere with the binding of calcium ions to myofibrils (21) and reduce blood lactate levels caused by fatiguing contraction (22). In practice, strength exercise and endurance training combined with LLL before and during sets of exercise increase the resistance to exhausting physical activities, corroborating the observations of decreases in lactate concentrations (18,23) or oxidative stress markers (24) and relative increases in peak torque/power (24) or EMG amplitude (25) during muscle contraction. However, the facilitation effects of LLL on muscle contractability are contingent upon multiple factors, including the laser parameters (26), research population, and exercise protocol (27).…”

supporting

confidence: 72%

Low-Level Laser Therapy Facilitates Postcontraction Recovery with Ischemic Preconditioning

Chen

Lin

et al. 2023

Medicine &Amp; Science in Sports &Amp; Exercise

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PurposeDespite early development of muscle fatigue, ischemic preconditioning is gaining popularity for strength training combined with low-load resistance exercise. This study investigated the effect of low-level laser (LLL) on postcontraction recovery with ischemic preconditioning.MethodsForty healthy adults (22.9 ± 3.5 yr) were allocated into sham (11 men, 9 women) and LLL (11 men, 9 women) groups. With ischemic preconditioning, they were trained with three bouts of intermittent wrist extension of 40% maximal voluntary contraction (MVC). During the recovery period, the LLL group received LLL (wavelength of 808 nm, 60 J) on the working muscle, whereas the sham group received no sham therapy. MVC, force fluctuations, and discharge variables of motor units (MU) for a trapezoidal contraction were compared between groups at baseline (T0), postcontraction (T1), and after-recovery (T2).ResultsAt T2, the LLL group exhibited a higher normalized MVC (T2/T0; 86.22% ± 12.59%) than that of the sham group (71.70% ± 13.56%; P = 0.001). The LLL group had smaller normalized force fluctuations (LLL, 94.76% ± 21.95%; sham, 121.37% ± 29.02%; P = 0.002) with greater normalized electromyography amplitude (LLL, 94.33% ± 14.69%; sham, 73.57% ± 14.94%; P < 0.001) during trapezoidal contraction. In the LLL group, the smaller force fluctuations were associated with lower coefficients of variation of interspike intervals of MUs (LLL, 0.202 ± 0.053; sham, 0.208 ± 0.048; P = 0.004) with higher recruitment thresholds (LLL, 11.61 ± 12.68 %MVC; sham, 10.27 ± 12.73 %MVC; P = 0.003).ConclusionsLLL expedites postcontraction recovery with ischemic preconditioning, manifesting as superior force generation capacity and force precision control for activation of MU with a higher recruitment threshold and lower discharge variability.

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supporting

confidence: 72%

Low-Level Laser Therapy Facilitates Postcontraction Recovery with Ischemic Preconditioning

Chen

Lin

et al. 2023

Medicine &Amp; Science in Sports &Amp; Exercise

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“…In this perspective, the studies that use LLLT have been widely disseminated due the positive effects on muscle performance. The LLLT is a non-invasive therapy that does not present adverse events if used appropriately [21][22][23][24] . On the other side, many irradiation parameters have not been fully elucidated yet.…”

Section: Discussionmentioning

confidence: 99%

“…The electromyography surface is widely employed to evaluate muscle activity. The RMS can reflects the active motor units average number in a muscle in a particular interval 6,8,24 . The electromyographic analysis results (RMS -tests of Max force, muscular power and resistance to muscular fatigue), indicate the increase in electrical activity and post-irradiation muscle recruitment, where the irradiated groups presented significant differences contrasted to the placebo and control groups.…”

Section: Discussionmentioning

confidence: 99%

Time response of increases in muscle performance after Low-Level Laser Therapy (LLLT) in weight training practitioners

Costa¹,

Costa²,

Delpasso³

et al. 2022

Rev Bras Educ Fís Esporte

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Many studies have demonstrated the effectiveness of low-level laser therapy (LLLT) on muscle performance. Nonetheless, ideal application parameters are not known yet. The interval from the laser application moment until the time of the exercise is amongst them. In addition, the literature does not offer adequate studies that analyse different interval times in the same test in humans. Thus, the present study proposes the examination of the two distinct intervals, from the irradiation moment to the instant of the exercise performance. Forty male volunteers were recruited and randomly divided into four groups - control, placebo, immediate laser and 10 min after laser – to participate in this study. The therapy was performed with laser at 830 nm, with a power of 30 mW, energy of 3 J, during a time of 100 seconds per point irradiation, in the belly of the biceps brachii muscle. The comparison of the groups consisted in the Max force analysis, muscular power and muscle fatigue tests executed in the isokinetic dynamometer, and the recruitment of fibers by electromyography surface (EMG) and blood lactate levels in the brachial biceps muscle of weight training practitioners. A significant level of 5% (p <0.05) was considered for data analysis. The parameters adopted in the application of LLT significantly increased muscle activity (RMS) in all protocols (peak force, power and muscular endurance). In addition, LLLT was also effective in maintaining muscle performance. It was concluded that the interval time from the moment of application of the LLLT until the performance of the exercise can influence in a different way the physical capacities tested.

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“…temperatura cutânea101 . Já Stamborowski e colaborados102 (2021), não observaram aumento de temperatura corporal no grupo tratado com fotobiomodulação, neste estudo, a irradiação não provocou variação brusca de temperatura em relação aos grupos (controle e placebo).…”

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Efeito adjunto da fotobiomodulação sobre dor, edema e temperatura facial em pós operatório de cirurgia de enxerto ósseo em rebordo alveolar fissurado. Estudo clínico

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The influence of photobiomodulation on the temperature of the brachial biceps during muscle fatigue protocol

Cited by 9 publications

References 27 publications

Low-Level Laser Therapy Facilitates Postcontraction Recovery with Ischemic Preconditioning

Low-Level Laser Therapy Facilitates Postcontraction Recovery with Ischemic Preconditioning

Time response of increases in muscle performance after Low-Level Laser Therapy (LLLT) in weight training practitioners

Efeito adjunto da fotobiomodulação sobre dor, edema e temperatura facial em pós operatório de cirurgia de enxerto ósseo em rebordo alveolar fissurado. Estudo clínico

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