Effect of 830 nm low-level laser therapy in exercise-induced skeletal muscle fatigue in humans

被引:131
作者
Pinto Leal Junior, Ernesto Cesar [1 ,2 ,3 ]
Brandao Lopes-Martins, Rodrigo Alvaro [4 ]
Vanin, Adriane Aver [5 ]
Baroni, Bruno Manfredini [1 ,5 ]
Grosselli, Douglas [1 ,6 ]
De Marchi, Thiago [1 ,5 ]
Iversen, Vegard V. [7 ]
Bjordal, Jan Magnus [3 ]
机构
[1] UCS, Lab Human Movement LMH, BR-95070560 Caxias Do Sul, Rio Grande Sul, Brazil
[2] UCS, Sports Med Inst IME, Caxias Do Sul, RS, Brazil
[3] Univ Bergen, Sect Physiotherapy Sci, Inst Publ Hlth & Primary Hlth Care, Bergen, Norway
[4] Univ Sao Paulo, Lab Pharmacol & Phototherapy Inflammat, Dept Pharmacol, Inst Biomed Sci, BR-09500900 Sao Paulo, Brazil
[5] UCS, Fac Physiotherapy, Caxias Do Sul, RS, Brazil
[6] UCS, Fac Phys Educ, Caxias Do Sul, RS, Brazil
[7] Univ Bergen, Physiol Sect, Inst Biomed, Bergen, Norway
关键词
Low-level laser therapy; Skeletal muscle; Muscle fatigue; Blood lactate; SIGNALING PATHWAY; LACTIC-ACID; NECK PAIN; FIBROMYALGIA; MICROCIRCULATION; EFFICACY; HYPOXIA; GENDER; BLIND; LLLT;
D O I
10.1007/s10103-008-0592-9
中图分类号
R318 [生物医学工程];
学科分类号
0831 ;
摘要
This study aimed to investigate the effect of 830 nm low-level laser therapy (LLLT) on skeletal muscle fatigue. Ten healthy male professional volleyball players entered a crossover randomized double-blinded placebo-controlled trial. Active LLLT (830 nm wavelength, 100 mW output, spot size 0.0028 cm(2), 200 s total irradiation time) or an identical placebo LLLT was delivered to four points on the biceps humeri muscle immediately before exercises. All subjects performed voluntary biceps humeri contractions with a load of 75% of the maximum voluntary contraction (MVC) force until exhaustion. After active LLLT the mean number of repetitions was significantly higher than after placebo irradiation [mean difference 4.5, standard deviation (SD) +/- 6.0, P = 0.042], the blood lactate levels increased after exercises, but there was no significant difference between the treatments. We concluded that 830 nm LLLT can delay the onset of skeletal muscle fatigue in high-intensity exercises, in spite of increased blood lactate levels.
引用
收藏
页码:425 / 431
页数:7
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