Showing papers by "Andrea Lemos published in 2012"

Effects of a group exercise program on handgrip strength of elderly women with low bone mass

Abstract: OBJECTIVES: To evaluate the effects of an exercise program on handgrip strength (HS) in elderly women with low bone mass. SUBJECTS AND METHODS: Thirty-six elderly women were randomized to the intervention group - GI (n = 18) and control group - GC (n = 18). Participants were evaluated by means of a HS test, using a handgrip dynamometer. GI performed strength, balance and functional mobility exercises, and GC performed stretching exercises. Both groups had sessions twice a week for 50 minutes, during 4 months. RESULTS: GI had a significant increase in handgrip strength equal to 31.38%. No differences were observed in GC. There were correlations between HS test and bone mineral density (BMD) of the femoral neck (r = 0.582, p = 0.003) and total femur (r = 0.485, p = 0.01). CONCLUSION: Results indicate a propensity to increase elderly HS, and showed significant correlations between HS and BMD.

A efetividade do laser de HeNe 632,8 nm no reestabelecimento da integridade dos tecidos cutâneos em animais experimentais: revisão sistemática

Abstract: O objetivo desta revisao sistematica foi analisar o efeito do laser de HeNe na cicatrizacao de feridas em ratos. Foram selecionados estudos experimentais que adotaram o laser HeNe para o tratamento de feridas agudas em ratos adultos saudaveis, com lesoes induzidas por bisturi, nas bases de dados PubMed/MEDLINE, LILACS e SciELO. Foram utilizados os seguintes descritores: cicatrizacao de feridas e colageno, de acordo com o MeSH e o DeCS, alem dos unitermos laser HeNe e reparacao da pele e seus equivalentes em ingles e espanhol. Tres estudos foram incluidos na revisao sistematica, nao sendo possivel a realizacao de metanalise, devido a impossibilidade de comparacao entre as metodologias dos estudos selecionados. Todos os estudos realizaram analise por meio de cortes histologicos das cicatrizes. A presenca de falhas metodologicas nos tres artigos dificultou a interpretacao fidedigna dos dados encontrados. Os estudos destacaram uma reducao na intensidade da resposta inflamatoria e uma melhor organizacao das fibras colagenas no grupo irradiado. A terapia com laser HeNe mostrou boa resposta no reparo tecidual. No entanto, tais resultados devem ser analisados de modo criterioso, uma vez que ha presenca de heterogeneidade, principalmente em relacao aos parâmetros adotados.

Does aerobic exercise training promote changes in structural and biomechanical properties of the tendons in experimental animals? a systematic review

Abstract: To develop a systematic review to evaluate, through the best scientific evidence available, the effectiveness of aerobic exercise in improving the biomechanical characteristics of tendons in experimental animals. Two independent assessors conducted a systematic search in the databases Medline/PUBMED and Lilacs/BIREME, using the following descriptors of Mesh in animal models. The ultimate load of traction and the elastic modulus tendon were used as primary outcomes and transverse section area, ultimate stress and tendon strain as secondary outcomes. The assessment of risk of bias in the studies was carried out using the following methodological components: light/dark cycle, temperature, nutrition, housing, research undertaken in conjunction with an ethics committee, randomization, adaptation of the animals to the training and preparation for the mechanical test. Eight studies, comprising 384 animals, were selected; it was not possible to combine them into one meta-analysis due to the heterogeneity of the samples. There was a trend to increasing ultimate load without changes in the other outcomes studied. Only one study met more than 80% of the quality criteria. Physical training performed in a structured way with imposition of overloads seems to be able to promote changes in tendon structure of experimental models by increasing the ultimate load supported. However, the results of the influence of exercise on the elastic modulus parameters, strain, transverse section area and ultimate stress, remain controversial and inconclusive. Such a conclusion must be evaluated with reservation as there was low methodological control in the studies included in this review.

Efeitos de um programa de exercícios em grupo sobre a força de preensão manual em idosas com baixa massa óssea Effects of a group exercise program on handgrip strength of elderly women with low bone mass

Abstract: Objectives: To evaluate the effects of an exercise program on handgrip strength (HS) in elderly women with low bone mass. Subjects and methods: Thirty­six elderly women were randomi­zed to the intervention group – GI (n = 18) and control group – GC (n = 18). Participants were evaluated by means of a HS test, using a handgrip dynamometer. GI performed strength, balan­ce and functional mobility exercises, and GC performed stretching exercises. Both groups had sessions twice a week for 50 minutes, during 4 months. Results: GI had a significant increase in handgrip strength equal to 31.38%. No differences were observed in GC. There were correlations between HS test and bone mineral density (BMD) of the femoral neck (r = 0.582, p = 0.003) and total femur (r = 0.485, p = 0.01). Conclusion: Results indicate a propensity to increase elderly HS, and showed significant correlations between HS and BMD. Arq Bras Endocrinol Metab. 2012;56(5):313-8 Keywords Bone density; exercises; muscle strength; osteoporosis; elderly health; exercise therapy