Phototherapy during treadmill training improves quadriceps performance in postmenopausal women

Autor(es)

Paolillo, F. R. ^[1] ; Corazza, A. V. ^[2] ; Paolillo, A. R. ^[3] ; Borghi-Silva, A. ^[4] ; Arena, R. ^[5] ; Kurachi, C. ^[1] ; Bagnato, V. S. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Opt Grp, Phys Inst Sao Carlos, BR-13560970 Sao Carlos, SP - Brazil

^[2] Univ Estadual Campinas, Dept Morphol, Fac Dent Piracicaba, Campinas, SP - Brazil

^[3] Univ Sao Paulo, Bioengineer Program, BR-13560970 Sao Carlos, SP - Brazil

^[4] Univ Fed Sao Carlos, Cardiopulm Physiotherapy Lab, Dept Phys Therapy, BR-13560 Sao Carlos, SP - Brazil

^[5] Univ Illinois, Dept Phys Therapy, Coll Appl Hlth Sci, Chicago, IL - USA

• Tipo de documento: Artigo Científico
• Fonte: CLIMACTERIC; v. 17, n. 3, p. 285-293, JUN 2014.
• Citações Web of Science: 6

Resumo

Objective To evaluate the effects of infrared-light-emitting diode (LED) during treadmill training on functional performance. Methods Thirty postmenopausal women aged 50-60 years were randomly assigned to one of three groups and successfully completed the full study. The three groups were: (1) the LED group, which performed treadmill training associated with phototherapy (n = 10); (2) the exercise group, which carried out treadmill training only (n = 10); and (3) the sedentary group, which neither performed physical training nor underwent phototherapy (n = 10). Training was performed over a period of 6 months, twice a week for 45 min per session at 85-90% of maximal heart rate, which was obtained during progressive exercise testing. The irradiation parameters were 100 mW, 39 mW/cm(2) and 108 J/cm(2) for 45 min. Quadriceps performance was measured during isokinetic exercise testing at 60 degrees/s and 300 degrees/s. Results Peak torque did not differ amongst the groups. However, the results showed significantly higher values of power and total work for the LED group (Delta= 21 +/- 6 W and Delta = 634 +/- 156 J, p < 0.05) when compared to both the exercise group (Delta = 13 +/- 10 W and Delta = 410 +/- 270 J) and the sedentary group (Delta = 10 +/- 9 W and Delta = 357 +/- 327 J). Fatigue was also significantly lower in the LED group (Delta = -7 +/- 4%, p < 0.05) compared to both the exercise group (Delta = 3 +/- 8%) and the sedentary group (Delta = -2 +/- 6%). Conclusions Infrared-LED during treadmill training may improve quadriceps power and reduce peripheral fatigue in postmenopausal women. (AU)

• Processo FAPESP: 09/01842-0 - Análise dos ajustes centrais e metabólicos periféricos durante o exercício físico dinâmico versus resistido em pacientes com DAC: efeitos de um programa de treinamento resistido baseado na determinação do limiar anaeróbio por diferentes metodologias
• Beneficiário: Audrey Borghi Silva
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores
• Processo FAPESP: 08/57858-9 - Instituto Nacional de Óptica e Fotônica
• Beneficiário: Vanderlei Salvador Bagnato
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 98/14270-8 - Centro de Ciências Ópticas e Fotônica
• Beneficiário: Vanderlei Salvador Bagnato
• Modalidade de apoio: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs