Design, Development and Testing of a Low-Cost sEMG System and Its Use in Recording Muscle Activity in Human Gait

Šupuk, Tamara; Skelin, Ana Kuzmanić; Čić, Maja

doi:10.3390/s140508235

Cited by 59 publications

(30 citation statements)

References 26 publications

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“…This research demonstrated that SEMG can accurately reflect the state of neuromuscular function in patients. SEMG has also been used for the evaluation of muscle function in patients with LDH [23][24][25][26]. Preliminary studies showed that the evaluation of muscle function using both frequency and time domains was more specific and objective than the simple biomechanical method [27].…”

Section: Discussionmentioning

confidence: 99%

Electromyography activities in patients with lower lumbar disc herniation

Qie

et al. 2020

BMR

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BACKGROUND: Lumbar disc herniation (LDH) can affect lower limb muscle function resulting in an abnormal gait. This study aims to use surface electromyography (SEMG) to evaluate patients with L4/L5 and L5/S1 LDH throughout muscle movement. METHODS: Twenty L4/L5 LDH patients (L5 Group), twenty L5/S1 LDH patients (S1 Group), and twenty healthy controls (Healthy) were recruited for the study. SEMG of bilateral tibialis anterior (TA) and lateral gastrocnemius (LG) muscles of patients were recorded using the DELSYS Wireless EMG System (Trigno TM Wireless Systems, Delsys Inc., USA). Root-mean-square (RMS), mean power frequency (MPF), and median frequency (MF) were compared between bilateral limbs in each participant. RESULTS: Reduced MPF and MF was found in TA measurements of the L5 Group and LG measurements of the S1 Group. The MPF and MF of the TA of symptomatic limbs of the L5 Group were reduced when compared to asymptomatic limbs (p = 0.006, p = 0.012, p < 0.05), and there were no significant differences in LG measurements (p > 0.05). The LG MPF and MF of the S1 Group in symptomatic limbs were reduced when compared to asymptomatic limbs (p = 0.006, p = 0.017, p < 0.05), and there were no significant differences in TA measurements (p > 0.05). Although there were no significant differences in RMS between bilateral limbs of the L5 and S1 Groups, we found some changes in RMS curves. First, compared to asymptomatic limbs of L4/L5LDH patients, β-peaks in the TA of symptomatic limbs appeared earlier. Second, two peaks in the LG of symptomatic limbs were found in L5/S1 LDH patients. CONCLUSION: TA is affected in patients with LDH of L4/L5, and LG is affected in patients with LDH of L5/S1. As demonstrated, SEMG can identify LDH-related muscle dysfunction.

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Section: Discussionmentioning

confidence: 99%

Electromyography activities in patients with lower lumbar disc herniation

Qie

et al. 2020

BMR

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“…Recently, many researches related to measurement of walking and running have been reported to analyze human gait [1][2][3][4][5][6]. In these researches, it is important to measure the Ground Reaction Force (GRF) because the GRF is the only external force acting on human during walking or running except for the gravity [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

6-Axis force/torque sensor for spike pins of sports shoes

Ishido

Takahashi

Nakai

et al. 2015

2015 28th IEEE International Conference on Micro Electro Mechanical Systems (MEMS)

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This paper reports on a method to measure forces and torques acting on spike pins of sports shoes. We fabricated a 2 mm × 2 mm × 0.3 mm 6-axis force/torque sensor chip, which consists of 6 piezoresistive beams. From the resistance changes of the 6 beams, 6 components of forces and torques can be detected. The sensor chip was connected to a flexible printed circuit board (PCB) and covered with thin polydimethylsiloxane (PDMS). Then, the sensor chip and flexible PCB were embedded in spike-pin-shaped epoxy resin.We calibrated the spike-pin-shaped sensor, and confirmed that 6-axis forces and torques were able to be detected by the proposed sensor.

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“…In fact, there exist a number of various types of techniques for noise reduction. Among these techniques, the wavelet based de-noising method has been considered as one of the most efficient techniques [1]. Since decades ago, wavelet-based techniques have been extensively used in digital signal processing [2] [3].…”

Section: Introductionmentioning

confidence: 99%

VLSI Implementation of Image Denoising Algorithm using Dual Tree Complex Wavelet Transform

Faruk¹,

Ramanaiah²,

Soundararajan³

2018

IJCA

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Digital images are often contaminated by noise, which degrades their visual and information quality sternly. Images can be corrupted at any stage of its acquisition and transmission through the medium. Image denoising is a essential process intended to eliminate the noise from naturally corrupted images. Wavelets were proved to be a excellent solution to denoising problems due to its remarkable capability in parallel time-frequency analysis. The wavelet transforms are based on shrinking the wavelet coefficients. Though, the Discrete Wavelet Transform (DWT) is an efficient tool, it suffers with specific limitations which reduced its use in many applications. Kingsbury introduced a redundant complex wavelet transform to avoid the limitations in standard DWT. Addressing this case various algorithms were emerged as a result of the vast research in this domain. However, in that work, the de-noising scheme was only realized in software manner. This work focuses on the hardware realization of a real-time wavelet de-noising procedure. The proposed de-noising method mainly consists of three modules: a DTCWT, a thresholding, and inverse DTCWT modular circuits. Two stage 2D-DTCWT based image denoising has been performed using soft thresholding method and then the hardware software co-simulation design has been synthesized in Xilinx ISE 14.5 and implemented on vertex 5 FPGA kit which operates at a frequency of 207.771MHz.

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Design, Development and Testing of a Low-Cost sEMG System and Its Use in Recording Muscle Activity in Human Gait

Cited by 59 publications

References 26 publications

Electromyography activities in patients with lower lumbar disc herniation

Electromyography activities in patients with lower lumbar disc herniation

6-Axis force/torque sensor for spike pins of sports shoes

VLSI Implementation of Image Denoising Algorithm using Dual Tree Complex Wavelet Transform

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