Low-level laser therapy improves the VO2 kinetics in competitive cyclists
Lanferdini FJ, Krüger RL, Baroni BM, Lazzari C, Figueiredo P, Reischak-Oliveira A, Vaz MA
Lasers in medical science · 23 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
- Gobierno
- CNPq
- Subvenciones
- Conselho Nacional de Desenvolvimento Científico e Tecnológico (Universal-CNPq 14/2013)
Según 2 financiadores declarados.
Publicación
- Publicado
- 2017-11-08 · Lasers Med Sci · vol. 33 · número 3 · págs. 453–460
- Editorial
- Springer Science+Business Media
- Citado
- 30 citas · más que el 89% de estudios similares · 2.5× el promedio de su campo
- Referencias
- 52 trabajos
- Acceso
- De pago
- Áreas de investigación
- Laser Applications in Dentistry and Medicine · Sports Performance and Training · Cardiovascular and exercise physiology
- Palabras clave
- low-level laser therapy, oxygen uptake kinetics, time to exhaustion, competitive cyclists, oxygen deficit, time constant, VO2max, ergogenic aids, neuromuscular fatigue, quadriceps, exercise tolerance
- MeSH
- humans, exercise test, exercise, cross-over studies, double-blind method, oxygen consumption, kinetics, bicycling, adult, male, low-level light therapy
7 autores
- Fábio Juner Lanferdini🇧🇷 · autor de correspondenciaUniversidade Federal do Rio Grande do Sul; Universidade Regional Integrada do Alto Uruguai e das Missões
- Renata Lopes Krüger🇧🇷🇨🇦Universidade Federal do Rio Grande do Sul; University of Calgary
- Bruno Manfredini Baroni🇧🇷Universidade Federal de Ciências da Saúde de Porto Alegre
- Caetano Decian Lazzari🇧🇷Universidade Federal de Santa Catarina
- Pedro Figueiredo🇵🇹Federação Portuguesa de Futebol; Portugal Football School; Instituto Superior da Maia
- Álvaro Reischak-Oliveira🇧🇷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.
Some evidence supports that low-level laser therapy (LLLT) reduces neuromuscular fatigue, so incrementing sports performance. A previous randomized controlled trial of our group showed increased exercise tolerance in male competitive cyclists treated with three different LLLT doses (3, 6, and 9 J/diode; or 135, 270, and 405 J/thigh) before time-to-exhaustion cycling tests. Now, the present study was designed to evaluate the effects of these LLLT doses on the VO2 kinetics of athletes during cycling tests. Twenty male competitive cyclists (29 years) participated in a crossover, randomized, double-blind, and placebo-controlled trial. On the first day, the participants performed an incremental cycling test to exhaustion to determine maximal oxygen uptake (VO2MAX) and maximal power output (POMAX), as well as a familiarization with the time-to-exhaustion test. In the following days (2 to 5), all participants performed time-to-exhaustion tests at POMAX. Before the exhaustion test, different doses of LLLT (3, 6, and 9 J/diode; or 135, 270, and 405 J/thigh, respectively) or placebo were applied bilaterally to the quadriceps muscle. All exhaustion tests were monitored online by an open-circuit spirometry system in order to analyze the VO2 amplitude, VO2 delay time, time constant (tau), and O2 deficit. Tau and O2 deficit were decreased with LLLT applications compared to the placebo condition (p 0.05) were found between the experimental conditions for VO2 amplitude and VO2 delay time. In conclusion, LLLT decreases tau and O2 deficit during time-to-exhaustion tests in competitive cyclists, and these changes in VO2 kinetics response can be one of the possible mechanisms to explain the ergogenic effect induced by LLLT.
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