Annals of Applied Sport Science
تازههای علوم کاربردی ورزش
Ann Appl Sport Sci
Medical Sciences
http://aassjournal.com
1
admin
2476–4981
2322-4479
10.61186/aassjournal
en
jalali
1400
4
1
gregorian
2021
7
1
9
2
online
1
fulltext
en
Effect of Low-Level Laser Therapy on Muscle Strength and Endurance and Post-Exercise Recovery of Young Adult: A Double-Blind, Placebo-Controlled, Randomized Clinical Trial
حرکتشناسی و آسيبهای ورزشی
Kinesiology and Sport Injuries
مقاله اصیل
Original Article
<div style="text-align: justify;"><strong>Background. </strong>Recovery or post-exercise rehabilitation is an essential part of exercise training. Low-level Laser Therapy (LLLT) is a modality increasing interest for recovery because of having a conservative and non-aggressive method. LLLT also decreases the production of fatigue-related biomechanical markers, such as lactate, C-reactive protein (CRP), and Creatine kinase (CK).<br>
<strong>Objectives. </strong>To investigate the effect of low-level laser therapy on muscle strength and endurance and post-exercise recovery of young adults between 20-35 years old.<br>
<strong>Methods. </strong>Fifty subjects were enrolled in this double-blind, placebo-controlled, randomized clinical trial study. Three days after the familiarization session, the subjects were divided into two groups via block randomization: the first group received pre-exercise laser at 810 nm, 60mW, and 60Hz frequency for 30 seconds on three point’s rectus femoris muscle. The other group received a placebo laser on the same points. The operator who was blinded to the allocation of the subjects applied the phototherapy. They underwent an exercise test with a treadmill and a maximum number of knee extensions with a 10 Kilograms (Kg) weight. The test results, level of blood lactate, perceived exertion of fatigue, and muscle soreness were assessed, and the results were analyzed.<br>
<strong>Results. </strong>The blood lactate level, the severity of muscle pain, the perceived exertion of fatigue, and the repetition of knee extensions with a 10 kg weight, had a statistically significant difference between laser and placebo groups (p < 0.05).<br>
<strong>Conclusion. </strong>The use of LLL before exercise may improve muscular performance and reduce muscle soreness and fatigue.</div>
Low-Level Laser Therapy (LLLT), Muscle Performance, Muscle Fatigue
0
0
http://aassjournal.com/browse.php?a_code=A-11-1396-1&slc_lang=en&sid=1
Amir Hosein
Abedi Yekta
abedy_yekta@yahoo.com
100319475328460010200
100319475328460010200
No
Department of Sports Medicine, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
Faraj
Tabeii
tabeiefar@gmail.com
100319475328460010201
100319475328460010201
No
Department of Nuclear Medicine, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
Shahin
Salehi
salehi2955@yahoo.com
100319475328460010202
100319475328460010202
No
Department of Sports Medicine, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
Mohammad-Reza
Sohrabi
m.r.sohrabi@gmail.com
100319475328460010203
100319475328460010203
No
Department of Community Medicine, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
Mehrshad
Poursaeidesfahani
mpoorsaid@yahoo.com
100319475328460010204
100319475328460010204
No
Department of Sports Medicine, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
Mohammad
Hassabi
hassabi@yahoo.com
100319475328460010205
100319475328460010205
No
Taleghani Hospital, Research Development committee, Department of Sports Medicine, Shahid Beheshti University of medical Sciences, Tehran, Iran
Nina
Hazegh
h.anahita64@yahoo.com
100319475328460010206
100319475328460010206
Yes
Department of Sports Medicine, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
Behnaz
Mahdaviani
behnaz_mahdaviani@yahoo.com
100319475328460010207
100319475328460010207
No
Department of Sports Medicine, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran