Influence of low-level laser therapy on vertical jump in sedentary individuals

Abstract

Objective To investigate the effects of low intensity laser (660nm), on the surae triceps muscle fatigue and power, during vertical jump in sedentary individuals, in addition to delayed onset muscle soreness.Methods We included 22 sedentary volunteers in the study, who were divided into three groups: G1 (n=8) without performing low intensity laser (control); G2 (n=7) subjected to 6 days of low intensity laser applications; and G3 (n=7) subjected to 10 days of low intensity laser applications. All subjects were evaluated by means of six evaluations of vertical jumps lasting 60 seconds each. In G2 and G3, laser applications in eight points, uniformly distributed directly to the skin in the region of the triceps surae were performed. Another variable analyzed was the delayed onset muscle soreness using the Visual Analog Scale of Pain.Results There was no significant difference in fatigue and mechanical power. In the evaluation of delayed onset muscle soreness, there was significant difference, being the first evaluation higher than the others.Conclusion The low intensity laser on the triceps surae, in sedentary individuals, had no significant effects on the variables evaluated.

Proprioceptive evaluation in healthy women undergoing Infrared Low Level Laser Therapy

“…Similar to the wavelength used by Almeida et al 32 , comparing the 830 nm to 660 nm, but found that both wavelengths promoted increased peak power and delayed fatigue of the biceps muscle. As noted above, recent studies have addressed the efficacy of LLLT in muscle performance, however, other studies did not show superior effects to the control with laser therapy, mainly due to enormous parameters variation of therapy 33,34 . In the present study, it was sought to use a commercial equipment with routinely used parameters in order to analyze if the LLLT application provide any change in proprioception, improving balance, and other variables, data from baropodometry referring to pressure from the feet were analyzed, distance from the center and even to the plantar surface, since the skin sensory stimulation plant contributes to the march and postural control, providing information on the compensatory reactions 35 .…”

Immediate effects of photobiomodulation with low-level laser therapy on muscle performance: an integrative literature review

“…Kakihata et al, 2015 (28) To evaluate the effects on the fatigue and the muscle power in 22 sedentary women with a mean age of 21.21±2.8 years.…”

“…The sample of this study consisted, then, of 27 articles published in the years 2008 11 ,2009 12-14 , 2010 2,15,16 , 2011 17 , 2012 18-20 , 2013 10,21,22 , 2014 23-26 , 2015 27,28 , 2016 [29][30][31][32][33][34] and 2017 35 . Of these, only three (11.1%) were published in Portuguese 10,16,28 . The other ones are in English, but all of them (100.0%) were produced by Brazilian authors.…”

“…Among the objectives of the studies, the main investigated aspects were the action of the laser on muscle fatigue 2,[11][12][13]15,16,18,[20][21][22][23]25,26,28,29,33,35 and on the gain of strength and/or the performance in a given activity 2,10,14,16,17,19,20,24,25,27,28,[30][31][32][33][34][35] . The comparison of the laser effects with other therapeutic light sources was also the objective of 3 (11.1%) studies 10,13,35 , and 1 (3.7%) work compared the effects of the red and infrared wavelengths on the muscle fatigue 18 .…”

“…The most used wavelength was infrared, being the choice of 23 (85.2%) 2,10,[12][13][14][15]17,[19][20][21][22][23][24][25][26][27][29][30][31][32][33][34][35] surveys. Only 3 (11.1%) 11,16,28 used the red one. Besides these, 1 (3.7%) author used the two wavelengths separately to compare them 18 .…”