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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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

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Author(s):
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
Total Authors: 9
Document type: Journal article
Source: Lasers in Medical Science; v. 31, n. 9, p. 1925-1933, DEC 2016.
Web of Science Citations: 15
Abstract

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)

FAPESP's process: 14/04557-2 - Isolated and combined effects of phototherapy and criotherapy in post-exercise skeletal muscle recovery
Grantee:Paulo Roberto Vicente de Paiva
Support type: Scholarships in Brazil - Master
FAPESP's process: 10/52404-0 - Low-level laser therapy in skeletal muscle fatigue and post-exercise recovery: Optimal parameters and effects in long-duration exercise
Grantee:Ernesto Cesar Pinto Leal Junior
Support type: Research Grants - Young Investigators Grants