The Effect of Low-level Laser Therapy on Delayed Onset Muscle Soreness When Delivered Pre- and Post- Eccentric Exercise
Year: 2015
Type: article
Study designs: Randomized Controlled Trial, Clinical Trial
Abstract: Delayed onset muscle soreness (DOMS) is a set of symptoms including muscle soreness and a decrease in muscle function and strength that present 24-48 hours post eccentric or unaccustomed-to exercise.Low-level laser therapy (LLLT) has been shown to be effective in attenuating DOMS symptoms.The purpose of this study was to determine the effectiveness of LLLT in the management of DOMS when delivered preand post-exercise protocol.Twenty-seven male volunteers were recruited and randomly assigned into one of three groups (LLLT, sham, control).All subjects underwent an eccentric exercise protocol of their elbow flexors.Pain, muscle function, and muscle strength were assessed prior to, 24, and 48 hours after the exercise protocol.Subjects received their treatment intervention before, immediately after the exercise protocol, and 24-hours after the exercise protocol.Subjects in the sham group had identical set-up as those in the LLLT group; however they did not receive an active LLLT treatment.The control group sat quietly and did not receive treatment.There was no significant group by time interactions for pain, function, or strength.There was also no significant time main effect for function.There was a significant time main effect for pain and strength.To our knowledge, this study was the first to explore the effects of LLLT and DOMS when delivered both pre-and post-eccentric exercise.Although LLLT was found ineffective for treating those symptoms of DOMS at our chosen parameters, previous literature has shown that LLLT has promising effects on attenuating symptoms of DOMS.
Author: Tiffany A Kobordo
Institution: Kent State University
Language: English
Subfield: Physiology (medical)
Field: Medicine
Domain: Health Sciences
Open Access status: green
OpenAlex ID: W2626243617