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Previous issue date: 2012-06-29 / 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 Col?gio Americano de Reumatologia (Rheumatology American School) by a physiatrist from the Servi?o 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 70? 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. / INTRODU??O: o sistema m?sculo-esquel?tico apresenta uma fun??o importante de sustenta??o corporal e as perdas relacionadas a sua fun??o interferem na capacidade funcional, conferindo ao idoso um risco aumentado de depend?ncia, fragiliza??o e quedas. A fibromialgia caracteriza-se por dor muscular cr?nica associada com dist?rbio do sono e fadiga que levam o indiv?duo acometido a uma perda de qualidade de vida, sendo suas caracter?sticas predominantes vinculadas ao sistema m?sculo-esquel?tico. OBJETIVO: analisar as caracter?sticas da fun??o muscular de idosas com e sem fibromialgia atrav?s da avalia??o da for?a pelo torque m?ximo isom?trico e isocin?tico dos extensores e flexores do joelho e a arquitetura muscular do vasto lateral. M?TODOS: foram recrutadas, por chamado divulgado em jornal de grande circula??o no Rio Grande do Sul, mulheres com 60 anos ou mais, n?o praticantes de atividade f?sica regular. As volunt?rias foram divididas em dois grupos: grupo fibromi?lgicas (n= 13 - diagnosticadas segundo o Col?gio Americano de Reumatologia por uma fisiatra do Servi?o de Fisiatria do HSL- PUCRS) e grupo sem fibromialgia (n= 13 - pareadas para idade, altura e massa corporal). Os torques isom?trico e isocin?tico foram obtidos por meio do Biodex System 3 Pro com o quadril em 90? de flex?o e os torques de extens?o e flex?o do joelho avaliados em 70 e 90 graus. A fim de avaliar a arquitetura muscular foi utilizado um aparelho de ultra-som SSD400 por meio de uma sonda de arranjo linear de 40 mm e freq??ncia de 7,5 MHz, sendo as imagens obtidas no plano sagital no n?vel de 50% do vasto lateral. O projeto de pesquisa foi aprovado pela Comiss?o Cient?fica do Instituto de Geriatria e Gerontologia e pelo Comit? de ?tica em Pesquisa da Pontif?cia Universidade Cat?lica do Rio Grande do Sul (of?cio n? 1583/09). Todas as participantes assinaram um Termo de Consentimento Livre e Esclarecido. Na an?lise estat?stica n?o foram detectadas evid?ncias de que as vari?veis estudadas n?o apresentaram uma distribui??o normal. Desta forma, nas compara??es inter e intra grupos foram utilizados os testes de alinha param?trica. As an?lises estat?sticas confirmaram a homogeneidade da amostra estudada e os dados receberam tratamento estat?stico do software SPSS 13.0 com n?vel de signific?ncia de 5%. RESULTADOS: a m?dia de idade das idosas foi de 65,7 anos. Para o torque isom?trico dos flexores do joelho nos ?ngulos de 70? e 90?, na rela??o torque flexor extensor do joelho em 90?; no torque isocin?tico m?ximo dos flexores do joelho em 60?/s, na rela??o torque isocin?tico flexor-extensor do joelho, encontrou-se diferen?a significativa, sendo os valores das idosas fibromi?lgicas menores que os das sem fibromialgia. J? o torque isom?trico dos extensores do joelho nos ?ngulos de 70? e 90?, o torque m?ximo normalizado (90?/70?) dos extensores do joelho, a rela??o torque flexor-extensor do joelho em 70?, o torque isocin?tico m?ximo dos extensores do joelho em 60?/s, o comprimento dos fasc?culos musculares do vasto lateral e o ?ngulo de pena??o do vasto lateral n?o apresentaram diferen?a entre as idosas com e sem fibromialgia. CONCLUS?O: os achados deste estudo sugerem que as altera??es apresentadas pelas idosas com fibromialgia est?o relacionadas ?s adapta??es musculares relacionadas ao desuso e ao descondicionamento f?sico imposto pelos sintomas dolorosos decorrentes desta s?ndrome.
| Identifer | oai:union.ndltd.org:IBICT/oai:tede2.pucrs.br:tede/2681 |
| Date | 29 June 2012 |
| Creators | Marquesan, Fernanda Martins |
| Contributors | Schwanke, Carla Helena Augustin |
| Publisher | Pontif?cia Universidade Cat?lica do Rio Grande do Sul, Programa de P?s-Gradua??o em Gerontologia Biom?dica, PUCRS, BR, Instituto de Geriatria e Gerontologia |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/doctoralThesis |
| Format | application/pdf |
| Source | reponame:Biblioteca Digital de Teses e Dissertações da PUC_RS, instname:Pontifícia Universidade Católica do Rio Grande do Sul, instacron:PUC_RS |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | 4438661476953179033, 500, 600, 2296420844541114010 |
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