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Later stages of diabetic neuropathy affect the complexity of the neuromuscular system at the knee during low‐level isometric contractions
Author(s) -
Suda Eneida Y.,
Sacco Isabel C.N.,
Hirata Rogerio P.,
Samani Afshin,
Kawamura Thiago T.,
Madeleine Pascal
Publication year - 2018
Publication title -
muscle and nerve
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.025
H-Index - 145
eISSN - 1097-4598
pISSN - 0148-639X
DOI - 10.1002/mus.25627
Subject(s) - isometric exercise , biceps , electromyography , medicine , physical medicine and rehabilitation , sample entropy , neuromuscular disease , physical therapy , cardiology , psychology , disease , pattern recognition (psychology) , cognitive psychology
: This study evaluates the complexity of force and surface electromyography (sEMG) during knee extension and flexion at low‐level isometric contractions in individuals with different degrees of diabetic peripheral neuropathy (DPN). Methods : Ten control and 38 diabetic participants performed isometric contractions at 10%, 20%, and 30% of maximal voluntary contraction. Knee force and multichannel sEMG from vastus lateralis (VL) and biceps femoris were acquired. The SD of force and sample entropy (SaEn) of both force and sEMG were computed. Results : Participants with moderate DPN demonstrated high force‐SD and low force‐SaEn. Severely affected participants showed low SaEn in VL at all force levels. Discussion : DPN affects the complexity of the neuromuscular system at the knee for the extension task during low‐level isometric contractions, with participants in the later stages of the disease (moderate and severe) demonstrating most of the changes. Muscle Nerve 57 : 112–121, 2018