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Luciano Ramos, Ernesto Cesar Pinto Leal Junior, Rodney Capp Pallotta, Lucio Frigo, Rodrigo Labat Marcos, Maria Helena Catelli de Carvalho, Jan Magnus Bjordal and Rodrigo Álvaro Brandão Lopes-Martins Infrared (810 nm) Low-Level Laser Therapy in Experimental Model of Strain-Induced Skeletal Muscle Injury in Rats: Effects on Functional Outcomes Photochemistry and Photobiology 88

Version of Record online: 22 NOV 2011 | DOI: 10.1111/j.1751-1097.2011.01030.x

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In this work we investigated effects of LLLT and diclofenac on functional outcomes in the acute stage after muscle strain injury in rats. The injured groups received either no treatment, or a single treatment with diclofenac 30 min prior to injury, or LLLT (810 nm, 100 mW) with doses of 1, 3, 6 or 9 J, at 1 h after injury. All treatments (except 9 J LLLT) significantly improved the walking index 12 h postinjury compared with the untreated group. The 3 J group also showed a significantly better walking index than the drug group. All treatments significantly improved muscle performance at 6 and 12 h. LLLT dose of 3 J was as effective as the pharmacological agent.

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