Effect of low-level laser therapy on muscle adaptation to knee extensor eccentric training
Baroni BM, Rodrigues R, Freire BB, Franke Rde A, Geremia JM, Vaz MA
European journal of applied physiology · 55 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
- Conselho Nacional de Desenvolvimento Científico e Tecnológico
Según 1 financiador declarado.
Publicación
- Publicado
- 2014-11-23 · Eur J Appl Physiol · vol. 115 · número 3 · págs. 639–647
- Editorial
- Springer Science+Business Media
- Citado
- 75 citas · más que el 94% de estudios similares · 4.6× el promedio de su campo
- Impacto
- Entre el 10 % más citado de su campo
- Referencias
- 47 trabajos
- Acceso
- De pago
- Áreas de investigación
- Laser Applications in Dentistry and Medicine · Sports Performance and Training · Exercise and Physiological Responses
- Palabras clave
- low-level laser therapy, eccentric training, knee extensors, muscle hypertrophy, muscle strength, isokinetic peak torque, muscle thickness, post-exercise recovery
- MeSH
- knee, muscle, skeletal, humans, adaptation, physiological, muscle contraction, torque, adult, male, resistance training, myalgia, low-level light therapy
6 autores
- Bruno Manfredini Baroni🇧🇷 · autor de correspondenciaUniversidade Federal do Rio Grande do Sul; Universidade Federal de Ciências da Saúde de Porto Alegre
- Rodrigo Rodrigues🇧🇷Universidade Federal do Rio Grande do Sul
- Bruno Freire🇧🇷Universidade Federal do Rio Grande do Sul
- Rodrigo de Azevedo Franke🇧🇷Universidade Federal do Rio Grande do Sul
- Jeam Marcel Geremia🇧🇷Universidade Federal do Rio Grande 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.
Purpose
Eccentric training has been popularized for physical conditioning and prevention/rehabilitation of musculoskeletal disorders, especially due to the expressive responses in terms of muscular strength gain. In view of evidence that low-level laser therapy (LLLT) is able to increase exercise performance and accelerate post-exercise recovery, the aim of this study was to verify the effect of LLLT on hypertrophy and strengthening of knee extensor muscles submitted to eccentric training.
Method
Thirty healthy male subjects were randomized into three groups: Control Group (CG), Training Group (TG) and Training + LLLT Group (TLG). CG received no intervention, while TG and TLG were engaged on an 8-week knee extensor isokinetic eccentric training program. Only subjects from TLG were treated with LLLT (wavelength = 810 nm; power output = 200 mW; total dosage = 240 J) before each training session. Knee extensor muscle thickness and peak torque were assessed through ultrasonography and isokinetic dynamometry, respectively.
Results
CG presented no changes in any variable throughout the study, while eccentric training led to significant increases in muscle thickness and peak torque in TG and TLG. Subjects from TLG reached significantly higher percent changes compared to subjects from TG for sum of muscles' thicknesses (15.4 vs. 9.4%), isometric peak torque (20.5 vs. 13.7%), and eccentric peak torque (32.2 vs. 20.0%).
Conclusion
LLLT applied before eccentric training sessions seems to improve the hypertrophic response and muscular strength gain in healthy subjects.
Resumen vía Europe PMC. Los derechos de autor siguen siendo de los autores o la editorial.
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