Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/200436
Type: Artigo de periódico
Title: Phototherapy And Resistance Training Prevent Sarcopenia In Ovariectomized Rats.
Author: Corazza, Adalberto Vieira
Paolillo, Fernanda Rossi
Groppo, Francisco Carlos
Bagnato, Vanderlei Salvador
Caria, Paulo Henrique Ferreira
Abstract: The aim of this study was to histologically and biochemically analyze the effects of light-emitting diode therapy (LEDT) associated with resistance training to prevent sarcopenia in ovariectomized rats. Forty female Wistar rats (12 months old, 295-330 g) were bilaterally ovariectomized and divided into four groups (n = 10 per group): control-sedentary (C), resistance training (T), LEDT-sedentary (L), and LEDT plus resistance training (LT). Trained rats performed a 12-week water-jumping program (3 days per week) carrying a load equivalent to 50-80% of their body mass strapped to their back. Depending on the group protocol, the LED device (850 nm, 100 mW, 120 J/cm(2), spot size 0.5 cm(2)) was used either as the only method or after the resistance training had been performed. The device was used in the single point contact mode (for 10 min). The irradiated region was the center of the greater trochanter of the right femur and the middle third of the rectus femoris muscle was subsequently analyzed histomorphometrically. Significant increases (p < 0.05) were noted for the muscle volume of the T (68.1 ± 19.7%), the L (74.1 ± 5.1%), and the LT (68.2 ± 11.5%) groups compared to the C group (60.4 ± 5.5%). There were also significant increases in the concentrations of IGF-1, IL-1, and TNF-α in the muscles of the treated groups (p < 0.05). Animals in the LT group showed a significant increase in IL-6 compared to T, L, and C groups (p < 0.05). These findings suggest that resistance training and LEDT can prevent sarcopenia in ovariectomized rats.
Subject: Animals
Female
Inflammation Mediators
Insulin-like Growth Factor I
Interleukin-1
Interleukin-6
Laser Therapy, Low-level
Muscle, Skeletal
Ovariectomy
Phototherapy
Physical Conditioning, Animal
Rats
Rats, Wistar
Resistance Training
Sarcopenia
Tumor Necrosis Factor-alpha
Rights: fechado
Identifier DOI: 10.1007/s10103-012-1251-8
Address: http://www.ncbi.nlm.nih.gov/pubmed/23307440
Date Issue: 2013
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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