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Doctoral Thesis
DOI
https://doi.org/10.11606/T.5.2015.tde-24112015-100231
Document
Author
Full name
Sarah Rubia Ferreira de Meneses
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2015
Supervisor
Committee
Marques, Amelia Pasqual (President)
Berssaneti, Ana Assumpção
Casarotto, Raquel Aparecida
Liebano, Richard Eloin
Title in Portuguese
Efeito da laserterapia de baixa intensidade (904 nm) e do alongamento estático em pacientes com osteoartrite de joelho: ensaio controlado randomizado simples cego
Keywords in Portuguese
Dor
Exercícios de alongamento muscular
Modalidades de fisioterapia
Osteoartrite do joelho
Reabilitação
Terapia a laser de baixa intensidade
Abstract in Portuguese
Objetivo: Investigar o efeito da laserterapia de baixa intensidade (LBI) e do alongamento estático, combinados ou não, em pessoas com osteoartrite de joelho (OAJ). Método: Foram randomizados 145 sujeitos de 50 a 75 anos com OAJ em cinco grupos de intervenção (n=29 cada): Laserativo+Along; Laserplacebo+Along; Along; Laserativo e controle. A laserterapia (GaAs; 904nm; 40mW; 3J/ponto; 27J/joelho) consistiu de nove sessões nos grupos de terapia combinada e 24 quando monoterapia. O alongamento foi composto por sete exercícios repetidos por 24 sessões. O controle recebeu uma cartilha educacional. A frequência de tratamento foi de 3x/sem. A variável primária foi a intensidade da dor medida pela Escala Visual Analógica e as variáveis secundárias incluídas foram domínios dor, função, rigidez e escore total do questionário Western Ontario and McMaster Universities Arthritis Index (WOMAC), funcionalidade avaliado pelo Lequesne, mobilidade pelo Timed Up and Go, amplitude de movimento do joelho (ADMJ) pela goniometria e encurtamento de isquiotibiais (IQT) pelo ângulo poplíteo. O nível de significância foi de ?=0,05. Resultados: Nos grupos de terapia combinada, não foi observada diferença entre o laser ativo e placebo (p>0,05). Ao final do estudo, os grupos demonstraram, em média, ganho relativo significativo na dor durante AVDs (50%), WOMAC total (39%), funcionalidade (30%) e mobilidade (20%) em comparação ao controle (p < 0,001). Houve melhora de 43% no encurtamento de IQT e de 9% no ganho de ADMJ nos grupos de terapia combinada em relação ao controle (p < 0,001 e p=0,02, respectivamente). Conclusão: LBI e alongamento estático, quando isolados, foram efetivos na melhora da dor, funcionalidade, mobilidade e nos domínios dor, função e escore total do WOMAC. A LBI nos grupos de terapia combinada não foi superior à aplicação placebo. Portanto, não devemos desconsiderar a contribuição do efeito placebo no resultado do tratamento isolado. A LBI combinada ao alongamento não promoveu benefícios adicionais em relação ao alongamento de forma isolada
Title in English
Effect of low-level laser therapy (904 nm) and static stretching in patients with knee osteoarthritis: a single blinded randomised controlled trial
Keywords in English
Knee osteoarthritis
Low-level laser therapy
Muscle stretching exercises
Pain
Physical therapy modalities
Rehabilitation
Abstract in English
Objective: To investigate the effect of low-level laser therapy (LLLT) and static stretching, in combination and as monotherapy, in people with knee osteoarthritis (KOA). Methods: 145 people aged 50-75 years with KOA were randomly allocated to five groups (each n=29): Laseractive+Stretch, Laserplacebo+Stretch, Stretch, Laseractive and control. The laser therapy (GaAs; 904nm; 40mW; 3J/point; 27J/knee) consisted of nine sessions in the combined treatment groups and 24 when used as monotherapy. Stretching consisted of seven exercises repeated for 24 sessions. The control group received an educational booklet. Treatment frequency was 3 times/week. The primary outcome was pain intensity measured by Visual Analogue Scale and the secondary outcomes included pain, function and stiffness' domains and total score of Western Ontario and McMaster Universities Arthritis Index (WOMAC), function assessed by Lequesne, mobility by Timed Up and Go, knee range of motion (KROM) by goniometry and hamstring shortening by popliteal angle. Results: In the combined treatment groups, there was no difference between the laser active and placebo (p > 0.05). At the end of the study, the treatment groups demonstrated, on average, a significant relative gain in pain (50%), total WOMAC (39%), function (30%) and mobility (20%) when compared to control (p < .001). For the combined treatment groups there was a 43% improvement in hamstring shortening (p <.001) and 9% improvement in KROM (p=0.02) when compared to control group. Conclusion: LLLT and stretching exercises, as monotherapy, were effective in reducing pain and improving function, mobility and the domains pain and function as well as the total score of WOMAC. The LLLT in the combined groups was not superior to the placebo application. Thus, we should not discard the contribution of the placebo effect in the result of the LLLT as monotherapy. The LLLT combined with stretching did not promote additional benefits compared to stretching alone
 
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Publishing Date
2015-11-24
 
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