Effect of 12 Weeks of Endurance Training Combined with Creatine Supplement, Photobiomodulation Therapy, or Both on Performance and Muscle Damage in Rats

• Autor(a) principal: Malta, Elvis de Souza [UNESP]
• Data de Publicação: 2020
• Outros Autores: Ferraresi, Cleber, Monte, Marina Gaiato [UNESP], Poli, Rodrigo Araujo Bonetti de [UNESP], Bjordal, Jan Magnus, Lopes-Martins, Rodrigo Alvaro Brandao, Marcos, Rodrigo Labat, Zagatto, Alessandro Moura [UNESP], Carvalho, Rodrigo Leal de Paiva [UNESP]
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.1089/photob.2019.4793; http://hdl.handle.net/11449/197039
• topic: laser irradiation; endurance training; ergogenic aids; muscle performance; muscle damage

Background:Photobiomodulation therapy (PBMT) and creatine (Cr) intake have been used in conjunction with heavy training, but little is known about their possible effects during a long-term training program. Objective:We assessed long-term use of PBMT and Cr in an exercise training program. Methods:Twenty-five male Wistar rats weighing similar to 300 g were randomly allocated to one of five groups: a nontraining control group, a training group, a training group receiving Cr, a training group receiving PBMT, and a training group receiving both PBMT and Cr. The training program consisted of 12 weeks of daily swimming training. PBMT was delivered in six points with a laser device (808 nm, 100 mW, 30 s per point of irradiation, 3 J, 75 J/cm(2)). Results:All training groups showed significantly higher peak force and longer time to 50% decay of force, and lower creatine kinase (CK) levels than the nontraining control group, thus confirming the benefit of the training program. In all outcomes related to muscle performance, the groups receiving PBMT with or without Cr supplement performed significantly better (p < 0.05) peak force and time of force decay during an electrical stimulation protocol than all the other groups. In addition, CK levels were also significantly lower for the PBMT groups than for the other groups. Conclusions:We conclude that PBMT alone or in conjunction with Cr supplement during a 12-week training program resulted in significantly better muscle performance and lower levels of CK, a biochemical marker of muscle damage.