Análise da função muscular em idosas com e sem fibromialgia

• Autor(a) principal: Marquesan, Fernanda Martins
• Data de Publicação: 2012
• Tipo de documento: Tese
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da PUC_RS
• Texto Completo: http://tede2.pucrs.br/tede2/handle/tede/2681
• topic: MEDICINA; GERONTOLOGIA; ENVELHECIMENTO; SAÚDE DO IDOSO; FIBROMIALGIA; IDOSOS; CNPQ::CIENCIAS DA SAUDE::MEDICINA

INTRODUCTION: The musculoskeletal system has an important function of supporting the body and losses related to its function interfere with its functional capacity, giving the elderly an increased risk of dependency, frailty and falls. Fibromyalgia is characterized by chronic muscle pain associated with sleep disturbance and fatigue which lead the affected individual to a loss of quality of life, and its predominant characteristics are linked to the musculoskeletal system. OBJECTIVE: To analyze the characteristics of muscle function in elderly women with and without fibromyalgia by assessing the strength by isometric and isokinetic peak torque of knee extensors and flexors and vastus lateralis muscle architecture. METHODS: We recruited, by a newspaper with largest circulation in Rio Grande do Sul, women aged 60 years or over who did not do physical activity regularly. The volunteers were divided into two groups: fibromyalgia (n = 13 - diagnosed according to Colégio Americano de Reumatologia (Rheumatology American School) by a physiatrist from the Serviço de Fisiatria do HSL-PUCRS (Physical Medicine Service of HSL-PUCRS) and without fibromyalgia group (n = 13 - matched for age, height and mass body weight). The isometric and isokinetic torques were obtained from the Biodex System 3 Pro with the hip in 90° of flexion and extension torque and knee flexion evaluated at 70 and 90 degrees. In order to evaluate the muscle architecture a SSD400 ultrasound was used by a probe of a linear array of 40 mm and frequency of 7.5 MHz and images were obtained in the sagittal plane at 50% of the vastus lateralis. The research project was approved by the Research Institute of Geriatrics and Gerontology and by the Committee of Research Ethics of PUC, Catholic University of Rio Grande do Sul, (letter No 1583/09). All participants signed a consent form. Statistical analysis did not detect any evidence that these variables did not show a normal distribution. Thus, inter and intra group comparisons tests were used for parametric lines. Statistical analyzes confirmed the homogeneity of the sample and the data were statistically analyzed by SPSS 13.0 software with a significance level of 5%. RESULTS: The average age of women was 65.7 years old. For the isometric torque of knee flexors at angles of 70º and 90° in relation flexor-extensor torque of the knee in 90°, the maximum isokinetic torque of knee flexors at 60°/ s in the relation flexor-extensor isokinetic torque knee we found significant differences whereas the values of the women with fibromyalgia were lower than those ones without it. Since the isometric torque of knee extensors at angles of 70° and 90°, the normalized peak torque (90°/70°) of knee extensors, the torque flexor-extensor of the knee in 70°, the maximum torque of isokinetic knee extensors at 60°/s, the length of the fascicles of the vastus lateralis muscle and the pennation angle of the vastus lateralis showed no difference between elderly with and without fibromyalgia. CONCLUSION: The findings suggest that the changes in elderly women with fibromyalgia are related to muscular adaptations related to disuse and deconditioning imposed by the painful symptoms caused by this syndrome.