نتایج جستجو برای: median frequency
تعداد نتایج: 623143 فیلتر نتایج به سال:
background: surface electromyography (semg) of muscles is a non-invasive tool that can be helpful in the assessment of muscle function and some motor control evaluations. a loss of force, known as muscle fatigue is accompanied by changes in muscle electrical activity. one of the most commonly used surface emg parameters which reflects paraspinal muscle fatigue during different tasks and positio...
Objectives: There are two sub systems of paraspinal muscles, the global-mobilizing system and the local stabilizing system. The multifidus muscles are assigned to the local system and stabilize the joints. In contrast, the longissimus muscles are assigned to the global system and force exertion. This study aimed to investigate the median frequency changes in mobilizing and stabilizing muscles f...
Periodic noises are repetitive patterns on digital images and decreased the visual quality of images. The various methods for reducing the effects of the periodic noise in digital images are firstly investigated. Then an intelligent median filter in the frequency domain with an acceptable computational cost is proposed. In the proposed method, the regions of noise frequencies are determined by ...
A graph model based on single character operations is developed for constructing the median of two strings X and Y. Vertices represent stages of median construction and edges correspond to processing one or both characters of the two strings. In this paper, the median is defined as a string having the median character frequency of each character over the two strings and which minimizes the maxi...
introduction: foot insoles are widely recommended to prevent running related to injuries. however, their effects on the frequency of ground reaction force(grf) is still unclear. the purpose of this study was to elemental test the effect of four shoe insoles on frequency of grf during stance phase of running. materials and methods: 15 female students (mean age22±1/85 year, height162±4/71cm and w...
Background and Objectives: Lower back pain is a common orthopedic illness that has a reasonable relationship to pronated foot. The aim of this study was to determine the effects of resistance training with Thera-Band on the electromyography frequency domain of trunk and lower limb muscles of patients with both low back pain and pronated feet during walking. Materials and Methods: This clinical...
Purpose: Motor control evaluation and analysis of it"s specifications for diagnosis of neuromuscular diseases is new approach in clinical electroneurophysiology, that is based on the changes of electromyography responses and classic reflexes in this field. In this study quantitative power spectrum frequency used for changes of motor control strategies. Materials and Methods: Twenty five health...
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