Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 1 de 1
Filtrar
Mais filtros








Base de dados
Intervalo de ano de publicação
1.
J Electromyogr Kinesiol ; 24(4): 465-72, 2014 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-24845169

RESUMO

This study compares muscle fiber conduction velocities estimated using surface electromyography during isometric maximal voluntary contraction in different stages of diabetic neuropathy. Eighty-five adults were studied: 16 non-diabetic individuals and 69 diabetic patients classified into four neuropathy stages, defined by a fuzzy expert system: absent (n=26), mild (n=21), moderate (n=11) and severe (n=11). Average muscle fiber conduction velocities of gastrocnemius medialis, tibialis anterior, vastus lateralis and biceps femoris were assessed using linear array electrodes, and were compared by ANOVA. Conduction velocities were significantly decreased in the moderate neuropathy group for the vastus lateralis compared to other groups (from 18% to 21% decrease), and were also decreased in all diabetic groups for the tibialis anterior (from 15% to 20% from control group). Not only the distal anatomical localization of the muscle affects the conduction velocity, but also the proportion of muscle fiber type, where the tibialis anterior with greater type I fiber proportion is affected earlier while the vastus lateralis with greater type II fiber proportion is affected in later stages of the disease. Generally, the muscles of the lower limb have different responsiveness to the effects of diabetes mellitus and show a reduction in the conduction velocity as neuropathy progresses.


Assuntos
Neuropatias Diabéticas/fisiopatologia , Eletromiografia/métodos , Contração Isométrica/fisiologia , Músculo Esquelético/fisiologia , Idoso , Estudos de Casos e Controles , Progressão da Doença , Eletrodos , Feminino , Lógica Fuzzy , Humanos , Extremidade Inferior/fisiopatologia , Masculino , Pessoa de Meia-Idade , Doenças do Sistema Nervoso Periférico/fisiopatologia , Músculo Quadríceps/fisiopatologia , Coxa da Perna/fisiologia
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA