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Real Time Monitoring of muscle fatigue with IoT and Wearable Devices

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Computers, Materials & Continua 2022年第7期72卷 999-1015页

作者： Anita Gehlot Rajesh Singh Sweety Siwach Shaik Vaseem Akram Khalid Alsubhi Aman Singh Irene Delgado Noya Sushabhan Choudhury School of Electronics&Electrical Engineering Lovely Professional UniversityPunjab144411India Department of Electronics&Communication Engineering University of Petroleum and Energy StudiesDehradun248001India Faculty of Computing and Information Technology King Abdulaziz UniversityJeddah37848Saudi Arabia Higher Polytechnic School Universidad Europea del AtlánticoC/Isabel Torres 2139011 SantanderSpain Universidad Internacional Iberoamericana CampecheMexico

Wearable monitoring devices are in demand in recent times for monitoring daily activities including ***,it is widely utilizing for preventing injuries of athletes during a practice session and in few cases,it leads to muscle *** present,emerging technology like the internet of things(IoT)and sensors is empowering to monitor and visualize the physical data from any remote location through internet *** this study,an IoT-enabled wearable device is proposing for monitoring and identifying the muscle fatigue condition using a surface electromyogram(sEMG)***,the EMG signal is utilized to display muscle *** controller,Wi-Fi module,and EMG sensor are utilized in developing the wearable *** Time-frequency domain spectrum technique is employed for classifying the threemuscle fatigue conditions including meanRMS,mean frequency,etc.A real-time experiment is realized on six different individuals with developed wearable devices and the average RMS value assists to determine the average threshold of recorded *** threshold level is analyzed by calculating the mean RMS value and concluded three fatigue conditions as>2V:Extensive);1–2V:Moderate,andmuscle ***,the device is interfaced with the cloud through the internet provided with a Wi-Fi module embedded in wearable *** data available in the cloud server can be utilized for forecasting the frequency of an individual to muscle fatigue.

关键词： LabVIEW muscle fatigue sEMG wearable sensor IoT cloud server

Evaluation of upper limb muscle fatigue based on surface electromyography

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Science China(Life Sciences) 2011年第10期54卷 939-944页

作者： ZHOU QianXiang CHEN YuHong MA Chao ZHENG XiaoHui Key Laboratory of Mechanobiology and Biomechanics of Ministry of Education Beihang University Beijing 100191 China The Quartermaster Research of the General Logistics Department Beijing 100010 China Key Laboratory of Measurement and Control Technology of Ministry of Education Beijing Information Science and Technology University Beijing 100192 China

fatigue is believed to be a major contributory factor to occupational injuries in machine *** development of accurate and usable techniques to measure operator fatigue is therefore *** this study,we used a novel method based on surface electromyography (sEMG) of the biceps brachii and the Borg scale to evaluate local muscle fatigue in the upper limb after isometric muscle *** young males performed isometric actions with the upper limb at different force *** activities of the biceps brachii were recorded during the *** scales were used to evaluate the subjective sensation of local fatigue of the biceps brachii after the *** activities were analyzed using the one-third band octave method,and an equation to determine the degree of fatigue was derived based on the relationship between the variable and the Borg *** results showed that the relationship could be expressed by a conic curve,and could be used to evaluate muscle fatigue during machine operation.

关键词： isometric muscle activity muscle fatigue one-third band octave method evaluation model for muscle fatigue

sEMG Feature Analysis on Forearm muscle fatigue During Isometric Contractions

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Transactions of Tianjin University 2014年第2期20卷 139-143页

作者：明东王欣徐瑞邱爽赵欣綦宏志周鹏张力新万柏坤 Tianjin Key Laboratory of Biomedical Detecting Techniques and Instruments School of Precision Instrument and OptoElectronics EngineeringTianjin University

In order to detect and assess the muscle fatigue state with the surface electromyography(sEMG) characteristic parameters,this paper carried out a series of isometric contraction experiments to induce the fatigue on the forearm muscles from four subjects,and recorded the sEMG signals of the flexor carpi ***'s median frequency(MDF) and mean frequency(MF) were extracted by short term Fourier transform(STFT),and the root mean square(RMS) of wavelet coefficients in the frequency band of 5—45 Hz was obtained by continuous wavelet transform(CWT).The results demonstrate that both MDF and MF show downward trends within 1 min; however,RMS shows an upward trend within the same *** three parameters are closely correlated with absolute values of mean correlation coefficients greater than *** is suggested that the three parameters above can be used as reliable indicators to evaluate the level of muscle fatigue during isometric contractions.

关键词： muscle fatigue isometric contraction time-frequency spectrum analysis median frequency mean frequency root mean square correlation

New trends in treatment of muscle fatigue throughout rehabilitation of elderlies with motor neuron diseases

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World Journal of Clinical Cases 2022年第2期10卷 397-400页

作者： Ayman Mohamed Department of Basic Sciences Faculty of Physical TherapyBeni-Suef UniversityBeni Suef 62511Egypt Rehabilitation Engineering Lab Department of Kinesiology and Community HealthUniversity of Illinois at Urbana-ChampaignChampaignIL 61820United States

muscle fatigue is a problem in rehabilitation,particularly in elderlies and patients with motor neuron *** are high contradictions in the effectiveness of the used methods to decrease muscle fatigue during *** mainly concentrate on increasing rest periods,decreasing training load,or using an ascending intensity of manner of *** training should focus on the newly discovered sensory system of muscle fatigue because of the important role of the sensory system in driving the motor ***,this editorial provides insight on using proprioceptive training to enhance the sensory system of muscle fatigue.

关键词： muscle fatigue Rehabilitation Elderlies Motor neuron diseases

muscle fatigue in women with primary biliary cirrhosis:Spectral analysis of surface electromyography

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World Journal of Gastroenterology 2006年第32期12卷 5186-5190页

作者： Maria Rosa Biagini Alessandro Tozzi Antonello Grippo Andrea Galli Stefano Milani Aldo Amantini Department of Clinical Pathophysiology Gastroenterology Unit University of FlorenceAOU CareggiFirenzeItaly Department of Neurological Science Neurophysiological Unit University of FlorenceAOU CareggiFirenzeItaly

AIM： To evaluate the myoelectric manifestations of peripheral fatigability in patients with primary biliary cirrhosis in comparison to healthy subjects. METHODS： Sixteen women with primary biliary cirrhosis without comorbidity and 13 healthy women matched for age and body mass index （BMI） completed the selfreported questionnaire fatigue impact scale. All subjects underwent surface electromyography assessment of peripheral fatigability. Anterior tibial muscle isometric voluntary contraction was executed for 20 s at 80% of maximal voluntary isometric contraction. During the exercise electromyographic signal series were recorded and root mean square （expression of central drive） as well as mean and median of electromyographic signal frequency spectrum （estimates of muscle fatigability） were com- puted. Each subject executed the trial two times. EMG parameters were normalized, then linear regression was applied and slopes were calculated. RESULTS： Seven patients were fatigued （median fatigue impact scale score： 38, range： 26-66） and 9 were not fatigued （median fatigue impact scale score： 7, range： 0-17）. The maximal voluntary isometric contraction was similar in patients （82, 54-115 N） and controls （87, 74-101 N）, and in patients with high （81, 54-115 N） and low fatigue impact scale scores （86, 65-106 N）. Root mean square as well as mean and median of frequency spectrum slopes were compared with the Mann-Whitney U test, and no significant difference was found between fatigued and non-fatigued patients and controls. CONCLUSION： No instrumental evidence of peripheral fatigability can be found in women with primary biliary cirrhosis but no comorbidity, suggesting that fatigue in such patients may be of central origin.

关键词： Primary biliary cirrhosis Cholestasis Surfaceelectromyography Peripheral fatigue muscle fatigue Fatigability Root mean square Mean frequency Medianfrequency fatigue impact scale

Exercise-induced muscle fatigue in the unaffected knee joint and its influence on postural control and lower limb kinematics in stroke patients

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Neural Regeneration Research 2017年第5期12卷 765-769页

作者： Sun Wook Park Sung Min Son Na Kyung Lee Department of Physical Therapy Faculty of Health Science Eulji University Department of Physical Therapy College of Health Science Cheongju University Department of Physical Therapy College of Rehabilitation Science Daegu University

This study aimed to investigate the effects of exercise-induced muscle fatigue in the unaffected knee joint on postural control and kinematic changes in stroke patients. Forty participants（20 stroke patients, 20 age-matched healthy participants） were recruited. To induce fatigue, maximum voluntary isometric contractions were performed in the unaffected knee joint in a Leg Extension Rehab exercise machine using the pneumatic resistance. We measured static and dynamic balance and lower-limb kinematics during gait. Changes in postural control parameters anteroposterior sway speed and total center of pressure distance differed significantly between the stroke and control groups. In addition, changes in gait kinematic parameters knee and ankle angles of initial contact differed significantly between stroke（paretic and non-paretic） and control groups. muscle fatigue in the unaffected knee and ankle impaired postural control and debilitates kinematic movement of ipsilateral and contralateral lower limbs, and may place the fatigued stroke patients at greater risk for falls.

关键词： nerve regeneration knee muscle fatigue stroke postural control gait kinemetics neural regeneration

Electromyographical Study on muscle fatigue in Repetitive Forearm Tasks

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Journal of Huazhong University of Science and Technology(Medical Sciences) 2007年第4期27卷 358-361页

作者：戴文涛赵晓蓉王正伦杨磊 Department of Occupational and Environmental Health Tongji Medical CollegeHuazhong University of Science and Technology

The purpose of this study was to examine whether repetitive muscle tasks in low weight load might influence the fatigue of forearm muscles, and to identify ergonomic risk factors of forearm muscle fatigue in these tasks. Sixteen healthy male volunteers performed eight wrist extensions in different frequency, weight and angle loads while being instructed to keep a dominant upper limb posture as constant as possible. Surface electromyograph （sEMG） was recorded from right extensors digitorium （ED）, flexor carpi radialis （FCR）, flexor carpi ulnaris （FCU） and extensor carpi ulnaris （ECU） during the task performance. Our results showed that mean power frequency （MPF） and median frequency （MF） values of ED, FCR and FCU were significantly lower （P〈0.05） at high frequency load level than at low load level. However, MPF and MF values of ED were significantly lower （P〈0.01） in higher load groups of frequency, angle and weight than in lower load groups. These results indicated that the fatigue of muscles varied in the same task, and the number-one risk factor of ECU, ED and FCR was angle load.

关键词： electromyography repetitive tasks risk factors muscle fatigue

Evaluation of muscle fatigue Based on Surface Electromyography and Subjective Assessment

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Chinese Journal of Biomedical Engineering(English Edition) 2017年第1期26卷 31-37页

作者： ZU Xiao-qi LI Yun ZHOU Qian-xiang School of Biological Science and Medical Engineering Beihang UniversityBeijing 100191China

To investigate the relationship between surface electromyography and subjective assessment of muscle fatigue, 20 young male volunteers participated in the experiment of pistol holding and aiming. sE MG of the anterior deltoid was recorded during the entire process, while fatigue assessments(Borg scale) were collected every 30 s. We divided the signal into several parts and then octave band method was used to calculate mean energy of each part, an equation was derived based on the relationship between the mean energy of sE MG and Borg scale. The results showed that the degree of local muscle fatigue could be described by a cubic curve, and could be used to evaluate and monitor muscle fatigue.

关键词： sEMG subjective assessment muscle fatigue octave band fatigue energy

An LSTM-Attention-based Method to muscle fatigue Detection by Integrating Multi-Source sEMG Signals

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An LSTM-Attention-based Method to Muscle Fatigue Detection b...