Effect of low-level laser therapy (GaAIAs - λ660 nm) on muscle function

被引：0

作者：

De Giaretta, Vania Maria Araújo ^{[1
]}

Santos, Luiz Prudêncio ^{[2
]}

Barbosa, Ana Maria ^{[3
]}

Hyslop, Stephen ^{[4
]}

Corrado, Alexandre Pinto ^{[5
]}

Nicolau, Renata Amadei ^{[6
]}

Cogo, José Carlos ^{[1
]}

机构：

[1] Laboratório de Fisiologia e Farmacodinâmica, Instituto de Pesquisa e Desenvolvimento - IP and D, Universidade do Vale do Paraíba - UNIVAP, São José dos Campos, SP

[2] Escola de Enfermagem Wenceslau Braz - EEWB, Itajubá, MG

[3] Unidade I, Taubaté, SP

[4] Departamento de Farmacologia, Universidade Estadual de Campinas - UNICAMP, Campinas, SP

[5] Departamento de Farmacologia, Universidade de São Paulo - USP, Ribeirão Preto, SP

[6] Centro de Laserterapia e Fotobiologia - CELAFO, Instituto de Pesquisa e Desenvolvimento - IP and D, Universidade do Vale do Paraíba - UNIVAP, Avenida Shishima Hifumi, 2911, Bairro Urbanova, São José dos Campos,SP

来源：

Revista Brasileira de Engenharia Biomedica | 2015年 / 31卷 / 03期

关键词：

Low-level laser therapy; Muscle activity; Muscle fatigue; Tetanus;

D O I：

10.1590/2446-4740.0736

中图分类号：

学科分类号：

摘要：

Introduction: Low-level laser therapy (LLLT) is effective in preventing fatigue and in stimulating the microcirculation and cellular activity. In this study, we examined the effect of LLLT on injured tibial muscle in vivo by assessing muscle function during fatigue. Methods: Twenty-four male mice were used. Each mouse received an injection of sterile 0.9% saline solution (50 µL) in the right tibialis anterior muscle, after which the tendon of the muscle was exposed, connected to an isometric transducer and subjected to a resting tension of 1 g. A bipolar electrode was attached to the tibial nerve for electrical stimulation. The mice were randomly allocated to one of two groups: G1 (control: 3 h - n=8 and 9 h - n=5) and G2 (treated with GaAlAs laser, λ660 nm, 35 mW, 0.6 J, 17 s: 3 h - n=6 and 9 h - n=5). Results: In G1 mice, the amplitude of the tetanic contracture in response to induced fatigue remained unchanged during six consecutive tetani. The amplitude of the tetanic contractions in response to electrical stimulation (4-8 mV) was also unchanged. These results indicated muscle intactness in response to the load imposed by tetanus. In G2 mice, there was an increase in the amplitude of contraction after 3 h and 9 h when compared to G1 at 83% tetanus. Conclusion: These results indicate that exposure of muscle to LLLT enhanced the contractile force and increased the resistance to muscle fatigue without causing morphological damage to cellular structures. © 2015 Sociedade Brasileira de Engenharia Biomedica.

引用

页码：241 / 248

页数：7

共 37 条

[1] Albuquerque-Pontes G.M., Vieira R.P., Tomazoni S.S., Caires C.O., Nemeth V., Vanin A.A., Santos L.A., Pinto H.D., Marcos R.L., Bjordal J.M., Carvalho P., Leal-Junior E.C.P., Effect of pre-irradiation with different doses, wavelengths, and application intervals of low-level laser therapy on cytochrome c oxidase activity in intact skeletal muscle of rats, Lasers in Medical Science, 30, 1, pp. 59-66, (2015)
[2] Andrade L., Hauck L.A., Maciel T.S., Nicolau R.A., Prevenção da fadiga em atletas de alta performance: Revisão de literatura, Anais Do 15° Encontro Latino Americano De Iniciação Científica E 11° Encontro Latino Americano De Pós-Graduação
[3] 2011, pp. 1-5, (2011)
[4] Barbosa A.M., Villaverde A.B., Guimaraes-Sousa L., Soares A.M., Zamuner S.F., Cogo J.C., Zamuner S.R., Low-level laser therapy decreases local effects induced by myotoxins isolated from Bothrops jararacussu snake venom, The Journal of Venomous Animals and Toxins including Tropical Diseases, 16, 3, pp. 470-479, (2010)
[5] Barbosa A.M., Villaverde A.B., Guimaraes-Souza L., Munin E., Fernandes C.M., Cogo J.C., Zamuner S.R., Effect of the low level laser therapy in the myonecrosis induced by Bothrops jararacussu snake venom, Photomedicine and Laser Surgery, 27, 4, pp. 591-597, (2009)
[6] Barbosa A.M., Villaverde A.B., Guimaraes-Souza L., Ribeiro W., Cogo J.C., Zamuner S.R., Effect of low-level laser therapy in the inflammatory response induced by Bothrops jararacussu snake venom, Toxicon, 51, 7, pp. 1236-1244, (2008)
[7] Barbosa-Souza V., Contin D.K., Fo B.W., Araujo A.B., Irazusta S.P., Cruz-Hofling M.A., Osteopontin, a chemotactic protein with cytokine-like properties, is up-regulated in muscle injury caused by Bothrops lanceolatus (Fer-de-lance) snake venom, Toxicon, 58, 5, pp. 398-409, (2011)
[8] Baroni B.M., Leal E.C., De Marchi T., Lopes A.L., Salvador M., Vaz M.A., Low level laser therapy before eccentric exercise reduces muscle damage markers in humans, European Journal of Applied Physiology, 110, 4, pp. 789-796, (2010)
[9] Caetano H., Zanuto E.A.C., Ação da laserterapia de baixa intensidade sobre parâmetros bioquímicos. Uma revisão de literatura, Colloquium Vitae, 5, pp. 63-69, (2013)
[10] Doin-Silva R., Baranauskas V., Rodrigues-Simioni L., Cruz-Hofling M.A., The ability of low level laser therapy to prevent muscle tissue damage induced by snake venom, Photochemistry and Photobiology, 85, 1, pp. 63-69, (2009)

← 1 2 3 4 →