I don't know anything about it, but some meta analyses suggest that evidence is still cautious regarding its benefits:
"Meta-analysis was performed for the variables: time until reach exhaustion, number of repetitions, isometric peak torque, and blood lactate levels showing a very low to moderate quality of evidence and some effect in favor to phototherapy" [1]
"In exploratory analysis, the results showed that phototherapy was effective only in the exercise protocol with localized exercise with large effect size" [2]
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[ 3.3 ms ] story [ 16.3 ms ] threadI don't know anything about it, but some meta analyses suggest that evidence is still cautious regarding its benefits:
"Meta-analysis was performed for the variables: time until reach exhaustion, number of repetitions, isometric peak torque, and blood lactate levels showing a very low to moderate quality of evidence and some effect in favor to phototherapy" [1]
"In exploratory analysis, the results showed that phototherapy was effective only in the exercise protocol with localized exercise with large effect size" [2]
[1] https://link.springer.com/article/10.1007/s10103-017-2368-6
[2] https://journals.lww.com/cjsportsmed/Abstract/2020/05000/Pho...