Photobiomodulation therapy (PBMT) and/or cryotherapy in skeletal muscle restitution, what is better? A randomized, double-blinded, placebo-controlled clinical trial

Autor(es)

Vicente de Paiva, Paulo Roberto ; Tomazoni, Shaiane Silva ; Johnson, Douglas Scott ; Vanin, Adriane Aver ; Albuquerque-Pontes, Gianna Moes ; Monteiro Machado, Caroline dos Santos ; Casalechi, Heliodora Leo ; Camillo de Carvalho, Paulo de Tarso ; Pinto Leal-Junior, Ernesto Cesar

• Tipo de documento: Artigo Científico
• Fonte: Lasers in Medical Science; v. 31, n. 9, p. 1925-1933, DEC 2016.
• Citações Web of Science: 15

Resumo

Cryotherapy for post-exercise recovery remains widely used despite the lack of quality evidence. Photobiomodulation therapy (PBMT) studies (with both low-level laser therapy and light-emitting diode therapy) have demonstrated positive scientific evidence to suggest its use. The study aims to evaluate PBMT and cryotherapy as a single or combined treatment on skeletal muscle recovery after eccentric contractions of knee extensors. Fifty healthy male volunteers were recruited and randomized into five groups (PBMT, cryotherapy, cryotherapy + PBMT, PMBT + cryotherapy, or placebo) for a randomized, double-blinded, placebo-controlled trial that evaluated exercise performance (maximum voluntary contraction (MVC)), delayed onset muscle soreness (DOMS), and muscle damage (creatine kinase (CK)). Assessments were performed at baseline; immediately after; and at 1, 24, 48, 72, and 96 h. Comparator treatments was performed 3 min after exercise and repeated at 24, 48, and 72 h. PBMT was applied employing a cordless, portable GameDay((TM)) device (combination of 905 nm super-pulsed laser and 875- and 640-nm light-emitting diodes (LEDs); manufactured by Multi Radiance Medical((TM)), Solon - OH, USA), and cryotherapy by flexible rubber ice packs. PBMT alone was optimal for post-exercise recovery with improved MVC, decreased DOMS, and CK activity (p < 0.05) from 24 to 96 h compared to placebo, cryotherapy, and cryotherapy + PBMT. In the PBMT + cryotherapy group, the effect of PBMT was decreased (p > 0.05) but demonstrated significant improvement in MVC, decreased DOMS, and CK activity (p < 0.05). Cryotherapy as single treatment and cryotherapy + PBMT were similar to placebo (p > 0.05). We conclude that PBMT used as single treatment is the best modality for enhancement of post-exercise restitution, leading to complete recovery to baseline levels from 24 h after high-intensity eccentric contractions. (AU)

• Processo FAPESP: 14/04557-2 - Efeitos isolados e combinados da fototerapia e crioterapia na recuperação muscular pós-exercício
• Beneficiário: Paulo Roberto Vicente de Paiva
• Modalidade de apoio: Bolsas no Brasil - Mestrado
• Processo FAPESP: 10/52404-0 - Laserterapia de baixa potência na fadiga muscular e recuperação muscular pós-exercício: parâmetros ideais de aplicação e efeitos em exercício de longa duração
• Beneficiário: Ernesto Cesar Pinto Leal Junior
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores