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Cited by 148 publications
(122 citation statements)
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“…17,32,34,36,43 Origin of MMG Signal. Barry and Cole 3 and Orizio et al 25,26 have suggested that the muscle vibrations recorded as MMG are a function of three components: (a) a gross lateral movement of the muscle at the initiation of a contraction that is related to the FIGURE 1. The relationship between peak torque and forearm angular velocity (mean ± SEM) for the eccentric and concentric muscle actions.…”
Section: Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…17,32,34,36,43 Origin of MMG Signal. Barry and Cole 3 and Orizio et al 25,26 have suggested that the muscle vibrations recorded as MMG are a function of three components: (a) a gross lateral movement of the muscle at the initiation of a contraction that is related to the FIGURE 1. The relationship between peak torque and forearm angular velocity (mean ± SEM) for the eccentric and concentric muscle actions.…”
Section: Discussionmentioning
confidence: 99%
“…Recent studies have utilized mechanomyography (MMG) to record and quantify the vibrations produced by contracting skeletal muscle. [2][3][4][5][6][7]12,15,16,21,22,[25][26][27][28][29][30]34,35,37,39,45,46 Mechanomyography has been used to examine various aspects of muscle function, and Gordon et al 16 speculated that the vibrations produced by contracting muscles are reflective of the ''mechanical counterpart'' of the motor unit activity as measured by electromyography (EMG). Simultaneous measurements of MMG and EMG have been used to monitor the dissociation between the electrical and mechanical events (excitation-contraction coupling) that occurs with fatigue, 6 examine factors related to electromechanical and phonomechanical delay, 30 and provide diagnostic information about muscle disease.…”
mentioning
confidence: 99%
“…During voluntary contractions, the asynchronous motor unit activities are summated to form the surface MMG, and it has been suggested that the time and frequency domains of the MMG signal may provide information regarding the unique motor unit activation strategies (motor unit recruitment and firing rate) that modulate isometric torque production in various muscles (Akataki, Mita, Watakabe, & Itoh, 2003;Orizio, 1993;Orizio et al, 2003;Orizio, Liberati, Locatelli, De Grandis, & Veicsteinas, 1996;Orizio, Perini, Diemont, Figini, & Veicsteinas, 1990;Orizio, Perini, & Veicsteinas, 1989). Specifically, it has been shown that MMG amplitude is related to motor unit recruitment, while the frequency domain of the MMG signal may contain information about motor unit firing rate (Akataki et al, 2003;Orizio, 1993;Orizio et al, 2003;Orizio, Solomonow, Baratta, & Veicsteinas, 1993).…”
mentioning
confidence: 99%
“…Similar to EMG, MMG is usually analysed as an interference signal during voluntary contraction. Its characteristics are determined by all active muscle fibres as linear or nonlinear (Orizio et al, 1996) summation of the individual contributions. Over the last decades different types of transducers have been applied to detect MMG signals, including piezoelectric contact sensor, microphones, accelerometers, and laser distance sensors.…”
Section: Origin and Detection Of The Mechanomyogram Signalmentioning
confidence: 99%
“…Moreover, it should be noted that the spectral contents of the MMG signal also undergo changes during sustained contraction in the power spectral variance (2nd order moment) and skewness (3rd order moment) indicating a complex modification of the shape of the power spectrum . These changes are most likely due to the additional motor unit recruitment of motor units during fatigue development and to the non-linear summation of motor unit contributions to the MMG signal (Orizio et al, 1996). Amplitude and frequency estimator values are averaged to decrease the amount of data and to obtain values corresponding to, e.g.,, 0-100% of the time to task failure or endurance time.…”
Section: Origin and Detection Of The Mechanomyogram Signalmentioning
confidence: 99%