Detection of Muscle Fatigue during Low-Level Isometric Contraction using Recurrence Quantification Analysis
(0) This study aimed to detect muscle fatigue during low-level isometric contraction using recurrence quantification analysis (RQA).It also examined whether the electrode configuration affects the sensitivity of detection of muscle fatigue.Five healthy subjects in their 20s participated in the experiment.They kept their dominant arm fixed parallel to the floor for 10 minutes.The surface EMG signal from the biceps brachii was recorded using unipolar and bipolar configurations.The RQA-based fatigue index was calculated as the percentage of determinism (%DET).The results can be summarized as follows.1) %DET significantly increased with progression of fatigue.RQA is therefore capable of detecting muscle fatigue during low-level isometric contraction.2) The %DET recorded by the unipolar configuration exhibited somewhat larger variation than that recorded by the bipolar configuration.The unipolar configuration appears to be more effective in detecting muscle fatigue by RQA.3) %DET is more sensitive than a traditional index,median frequency (MDF),to fatigue-induced changes.
muscle fatigue surface EMG recurrence quantification analysis isometric contraction
K.Ito Y.Hotta T.Abe
Niigata Institute of Technology/Department of Information and Electronics Engineering, Kashiwazaki, Japan
国际会议
World Congress on Medical Physics and Biomedical Engineering (2012年医学物理及生物医学工程国际会议(IFMBE))
北京
英文
509-512
2012-05-26（万方平台首次上网日期，不代表论文的发表时间）