Low level laser therapy before eccentric exercise reduces muscle damage markers in humans
Baroni BM, Leal Junior EC, De Marchi T, Lopes AL, Salvador M, Vaz MA
European journal of applied physiology · 122 citas
Cómo se estudió
- Diseño
- Ensayo controlado aleatorizado (indexado por PubMed)
- Estudiado en
- Personas
- Resultado principal
- Marcadores de salud y funcionamiento
Quién lo pagó
- Financiación
- Financiación independiente
- Gobierno
- Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
Según 1 financiador declarado.
Publicación
- Publicado
- 2010-07-02 · Eur J Appl Physiol · vol. 110 · número 4 · págs. 789–796
- Editorial
- Springer Science+Business Media
- Citado
- 182 citas · más que el 98% de estudios similares · 8.5× el promedio de su campo
- Impacto
- Entre el 10 % más citado de su campo
- Referencias
- 44 trabajos
- Acceso
- De pago
- Áreas de investigación
- Exercise and Physiological Responses · Laser Applications in Dentistry and Medicine · Muscle metabolism and nutrition
- Palabras clave
- low-level laser therapy, eccentric exercise, delayed onset muscle soreness, muscle damage markers, creatine kinase, lactate dehydrogenase, knee extensors, maximal voluntary contraction, placebo effect, muscle function recovery, healthy men, muscle fiber composition, muscle fiber cross-sectional area
- MeSH
- muscle, skeletal, knee joint, humans, pain, l-lactate dehydrogenase, creatine kinase, exercise, muscle contraction, adult, male, young adult, biomarkers, low-level light therapy
6 autores
- Bruno Manfredini Baroni🇧🇷 · autor de correspondenciaUniversidade Federal do Rio Grande do Sul
- Ernesto César Pinto Leal‐Junior🇳🇴University of Bergen
- Thiago De Marchi🇧🇷Universidade de Caxias do Sul
- André Luíz Lopes🇧🇷Universidade Federal do Rio Grande do Sul
- Mirian Mendonça Salvador🇧🇷Universidade de Caxias do Sul
- Marco Aurélio Vaz🇧🇷Universidade Federal do Rio Grande do Sul
Resumen
El texto original del estudio, en el idioma en que se publicó.
The purpose of the present study was to determine the effect of low level laser therapy (LLLT) treatment before knee extensor eccentric exercise on indirect markers of muscle damage. Thirty-six healthy men were randomized in LLLT group (n = 18) and placebo group (n = 18). After LLLT or placebo treatment, subjects performed 75 maximal knee extensors eccentric contractions (five sets of 15 repetitions; velocity = 60° seg(-1); range of motion = 60°). Muscle soreness (visual analogue scale--VAS), lactate dehydrogenase (LDH) and creatine kinase (CK) levels were measured prior to exercise, and 24 and 48 h after exercise. Muscle function (maximal voluntary contraction--MVC) was measured before exercise, immediately after, and 24 and 48 h post-exercise. Groups had no difference on kineanthropometric characteristics and on eccentric exercise performance. They also presented similar baseline values of VAS (0.00 mm for LLLT and placebo groups), LDH (LLLT = 186 IU/l; placebo = 183 IU/l), CK (LLLT = 145 IU/l; placebo = 155 IU/l) and MVC (LLLT = 293 Nm; placebo = 284 Nm). VAS data did not show group by time interaction (P = 0.066). In the other outcomes, LLLT group presented (1) smaller increase on LDH values 48 h post-exercise (LLLT = 366 IU/l; placebo = 484 IU/l; P = 0.017); (2) smaller increase on CK values 24 h (LLLT = 272 IU/l; placebo = 498 IU/l; P = 0.020) and 48 h (LLLT = 436 IU/l; placebo = 1328 IU/l; P < 0.001) post-exercise; (3) smaller decrease on MVC immediately after exercise (LLLT = 189 Nm; placebo = 154 Nm; P = 0.011), and 24 h (LLLT = 249 Nm; placebo = 205 Nm; P = 0.004) and 48 h (LLLT = 267 Nm; placebo = 216 Nm; P = 0.001) post-exercise compared with the placebo group. In conclusion, LLLT treatment before eccentric exercise was effective in terms of attenuating the increase of muscle proteins in the blood serum and the decrease in muscle force.
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