Influence of type of MVC test on electromyography measures of biceps brachii and triceps brachii

Roman-Liu, Danuta; Bartuzi, Paweł

doi:10.1080/10803548.2017.1353321

Cited by 20 publications

(8 citation statements)

References 28 publications

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“…In addition, the role of the muscle in force exertion also affects the amplitude and frequency of the EMG. Roman- Liu and Bartuzi (2018) have found that when the BB and TB function as antagonists, their frequency measures show lower values than when these muscles work as agonists. When acting as stabilizers, BB shows a much lower amplitude than during agonist with similar spectral measures.…”

Section: Discussionmentioning

confidence: 99%

Muscular fatigue measurements for push‐down tasks in ground demolitions

2020

Hum Ftrs & Erg Mfg Svc

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Demolition hammering tasks are physically demanding tasks that could cause muscle fatigue and musculoskeletal disorders. Electromyography (EMG) data have been adopted to assess levels of muscular activity and onset of muscular fatigue for both industrial tasks and physical activities. An experiment simulating a manual demolition task on the ground was performed on 23 healthy male participants. The objectives were to test the hypotheses that the handle height and the force applied to affect the EMG amplitude, the increase of the EMG amplitude, and the decline of the mean power frequency (MPF) of the EMG for performing the tasks. This study also aimed at finding the most fatigued muscles which dominate the end of the sustained push-down tasks in ground demolitions. The results showed that the EMG amplitude required to perform the tasks was significantly affected by the handle height and force applied. Significant increases in EMG amplitude and decreases in MPF were found. Bicep brachii, tricep brachii, and pectoralis major muscles were the most fatigued muscles that dominated the termination of the tasks. Pushing with body leaning forward to utilize partial body weight was less fatiguing than the other two postures. Elbow flexion is undesirable and should be avoided when performing such tasks.

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Section: Discussionmentioning

confidence: 99%

Muscular fatigue measurements for push‐down tasks in ground demolitions

2020

Hum Ftrs & Erg Mfg Svc

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“…As we consulted with the professor of Physical Education and Sports Teaching (Karamanoğlu Mehmetbey University), he stated that the fall was caused by the distortion of movement. According to the consultant professor, this change appeared to have been caused by the prolongation of the activation period of the muscle as a result of pushing the weight down more slowly as specified in [64, 65].…”

Section: Resultsmentioning

confidence: 99%

Design and Validation of Multichannel Wireless Wearable SEMG System for Real-Time Training Performance Monitoring

Örücü

Selek

2019

Journal of Healthcare Engineering

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Monitoring of training performance and physical activity has become indispensable these days for athletes. Wireless technologies have started to be widely used in the monitoring of muscle activation, in the sport performance of athletes, and in the examination of training efficiency. The monitorability of performance simultaneously in the process of training is especially a necessity for athletes at the beginner level to carry out healthy training in sports like weightlifting and bodybuilding. For this purpose, a new system consisting of 4 channel wireless wearable SEMG circuit and analysis software has been proposed to detect dynamic muscle contractions and to be used in real-time training performance monitoring and analysis. The analysis software, the Haar wavelet filter with threshold cutting, can provide performance analysis by using the methods of moving RMS and %MVC. The validity of the data obtained from the system was investigated and compared with a biomedical system. In this comparison, 90.95% ± 3.35 for left biceps brachii (BB) and 90.75% ± 3.75 for right BB were obtained. The output of the power and %MVC analysis of the system was tested during the training of the participants at the gym, and the training efficiency was measured as 96.87% ± 2.74.

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“…The list of determined electromyographic parameters included the amplitude of bioelectrical signal from the longissimus muscle, expressed in microvolt. Avoiding a confounding effect associated with measurement conditions, the results were normalized to a reference Maximum Voluntary Contraction (MVC) and expressed in percent [17]. After fixation of the electrodes and preparation of the system, MVC of the longissimus was determined according to the international SENIAM guidelines [16].…”

Section: Methodsmentioning

confidence: 99%

Effectiveness of Combined General Rehabilitation Gymnastics and Muscle Energy Techniques in Older Women with Chronic Low Back Pain

Wendt¹,

Cieślik²,

Lewandowski³

et al. 2019

BioMed Research International

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Objective. The aim of this study was to determine the effect of general rehabilitation gymnastics on subjective and objective characteristics of locomotor system in older women with chronic LBP. To satisfy this goal, the outcomes in exercising women were compared with the results of nonexercising controls. Material and Methods. The study group included 21 women with chronic LBP (age 65-75 years), participating in a 3-year general rehabilitation program combining strength, stretching, endurance, balance, and stabilization exercises with Muscle Energy Techniques (MET). Control group included 20 women with chronic LBP, who neither undertook the gymnastics nor participated in other forms of physical activity. The list of outcome measures included pain severity (Numeric Rating Scale), limitations in the activities of daily living (Oswestry Disability Index and Roland-Morris Disability Questionnaire), mobility of all spinal segments (tensometric electrogoniometry), and bioelectrical activity of back muscles (kinesiologic electromyography). Results. Exercising women presented with lesser severity of current pain (by 62%, p<0.001) and pain experienced during the last three months (by 32.5%, p<0.001), reported less ailments during the last three months, and had fewer limitations in the activities of daily living (a 30% decrease in Oswestry Disability Index, p<0.05, and a 65% decrease in Roland-Morris Disability Questionnaire scores, p<0.001) than the controls. Moreover, they showed significantly higher values of nearly all spondylometric parameters except for cervical lateral flexion. The study groups did not differ in the amplitudes of bioelectrical signal from the back muscles. Conclusions. These findings may point to beneficial effects of the combined exercise program.

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Influence of type of MVC test on electromyography measures of biceps brachii and triceps brachii

Cited by 20 publications

References 28 publications

Muscular fatigue measurements for push‐down tasks in ground demolitions

Muscular fatigue measurements for push‐down tasks in ground demolitions

Design and Validation of Multichannel Wireless Wearable SEMG System for Real-Time Training Performance Monitoring

Effectiveness of Combined General Rehabilitation Gymnastics and Muscle Energy Techniques in Older Women with Chronic Low Back Pain

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