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Salat may be useful in warm up or in rehabilitation programs. This study explores the muscle potential and force during Salat's movement and position that can be one of the daily exercise and training for our muscle in course of biomechanical response of human body. From this study, it is possible to recognize the muscles that are involved and contract during Salat. In case of signal acquisition,...
In this work, an attempt has been made to analyze progression of muscle fatigue in surface electromyography (sEMG) signals by estimating the complexity. The sEMG signals are acquired from biceps brachii of 50 healthy volunteers during dynamic contraction. The pre-processed signals are segmented into non-overlapping epochs of various sizes (500ms, 750ms and 1000ms) and Lempel-Ziv Complexity (LZC) is...
In this work an attempt has been made to analyze the surface Electromyography signals recorded during dynamic contractions using quadratic time frequency distribution. Surface EMG signals are recorded from biceps brachii muscle in 50 healthy volunteers. These signals are subjected to Zhao-Atlas-Marks based Quadratic Time-Frequency Distribution (QTFD). Instantaneous median frequency (IMDF) and instantaneous...
In this work, an attempt has been made to analyze surface electromyography signals (sEMG) by estimating maximum singular value. sEMG signals are recorded from biceps brachii muscles of 50 healthy volunteers during repetitive elbow flexion and extension exercise. Maximum singular values are estimated from the signals. The results show a decrease in MSV at the point of first muscle discomfort experienced...
To facilitate the use of upper limb myoelectric prostheses, we investigated if and how muscle compartments, i.e intra-muscular subdivisions each innervated by a nerve branch, could be voluntarily contracted. Five pairs of electrodes were positioned across the short head of the biceps brachii and 5 others across its long head. Electromyographic signals from 4 able subjects were collected. They produced...
The aim of this study was to compare the intervals of time between adjacent zero crossings (ZCI), an alternative frequency-temporal parameter, with the root-mean-square (RMS) value and the median frequency (Fmed) from the surface EMG (sEMG) signal in muscle fatigue analysis. Twenty right-handed volunteers performed isometric contractions of right biceps brachii muscle while sEMG signals were collected...
A study was conducted to investigate the effect of light assembly task on upper limb muscles (biceps brachii and upper trapezius) and brain activities. The task was conducted in two levels of time pressure (No time-stress and time-stress levels). Each task was done for one hour experiment. Surface electromyography (SEMG) measured upper limb muscle activities from six subjects. The results indicated...
A study was conducted to investigate the effect of upper limb muscles during repetitive task consisted of three hand-arm directions: 30??, 90??, and 150??. The aims of this study were to investigate muscle activity during repetitive task, to compare muscle activity between genders and to determine the correlation between muscles and time. Biceps brachii, anterior deltoid, and upper trapezius muscles...
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