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Effects of photobiomodulation therapy associated with resistance training in elderly men: a randomized double-blinded placebo-controlled trial.
Fritsch, Carolina G; Dornelles, Maurício P; Teodoro, Juliana L; da Silva, Larissa X N; Vaz, Marco A; Pinto, Ronei S; Cadore, Eduardo L; Baroni, Bruno M.
Afiliação
  • Fritsch CG; Graduate Program in Rehabilitation Sciences, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brazil. carolinafritsch@gmail.com.
  • Dornelles MP; Graduate Program in Rehabilitation Sciences, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brazil.
  • Teodoro JL; Exercise Research Laboratory, School of Physical Education, Physiotherapy and Dance, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.
  • da Silva LXN; Exercise Research Laboratory, School of Physical Education, Physiotherapy and Dance, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.
  • Vaz MA; Exercise Research Laboratory, School of Physical Education, Physiotherapy and Dance, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.
  • Pinto RS; Exercise Research Laboratory, School of Physical Education, Physiotherapy and Dance, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.
  • Cadore EL; Exercise Research Laboratory, School of Physical Education, Physiotherapy and Dance, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.
  • Baroni BM; Graduate Program in Rehabilitation Sciences, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brazil.
Eur J Appl Physiol ; 119(1): 279-289, 2019 Jan.
Article em En | MEDLINE | ID: mdl-30367258
PURPOSE: The purpose of this study was to investigate the effects of photobiomodulation therapy (PBMT) combined with resistance training on knee extensors muscle mass, strength and functional capacity in elderly men. METHODS: In this randomized double-blinded placebo-controlled trial, healthy elderly men (age 60-80 years) completed 12 weeks of resistance training (2×/week) with application of placebo (n = 13) or active PBMT (n = 11) on quadriceps muscles (850 nm, 240 J per limb) before each training session. Leg press and knee extension one-repetition maximum (1RM) tests, isometric and concentric peak torques, rectus femoris (RF) and vastus lateralis (VL) muscle thickness, timed up-and-go (TUG) and chair rise-to-standing (CRS) tests were performed before and after the intervention period. RESULTS: There were significant improvements in all outcomes for both groups (p < 0.05), except for RF muscle thickness for the placebo group (p = 0.09). Large effect sizes (ES > 0.8) were observed for leg press and leg extension 1RM and CRS tests for both groups, as well as for TUG test for PBMT group. Isokinetic peak torque for both groups and TUG for placebo group had moderate increases (ES > 0.5). Muscle thicknesses and isometric peak torque had small increases (ES > 0.2) in both groups. Both null hypothesis analysis and magnitude-based inference support similar effects of PBMT and placebo treatments. CONCLUSION: Different than previously evidenced in young subjects, PBMT with the parameters used in this study did not provide any additional benefits in comparison to placebo application on muscle mass, strength and functional capacity of healthy elderly men engaged in a resistance training program.
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Texto completo: 1 Base de dados: MEDLINE Assunto principal: Músculo Esquelético / Terapia com Luz de Baixa Intensidade / Treinamento Resistido Tipo de estudo: Clinical_trials / Risk_factors_studies Limite: Aged / Aged80 / Humans / Male / Middle aged Idioma: En Revista: Eur J Appl Physiol Assunto da revista: FISIOLOGIA Ano de publicação: 2019 Tipo de documento: Article País de afiliação: Brasil

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Músculo Esquelético / Terapia com Luz de Baixa Intensidade / Treinamento Resistido Tipo de estudo: Clinical_trials / Risk_factors_studies Limite: Aged / Aged80 / Humans / Male / Middle aged Idioma: En Revista: Eur J Appl Physiol Assunto da revista: FISIOLOGIA Ano de publicação: 2019 Tipo de documento: Article País de afiliação: Brasil