The effect of leg extension training on the mean power frequency of the mechanomyographic signal

Evetovich, Tammy K.; Housh, Terry J.; Weir, Joseph P.; Housh, Dona J.; Johnson, Glen O.; Ebersole, Kyle T.; Smith, Douglas B.

doi:10.1002/(sici)1097-4598(200006)23:6<973::aid-mus21>3.0.co;2-c

Cited by 15 publications

(34 citation statements)

References 26 publications

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“…Previous studies 5,13,16 have examined MMG responses to resistance training. Cerquiglini et al 5 examined the frequency responses of MMG signals from the gastrocnemius and quadriceps femoris muscles in power-lifters who trained with the press, jerk, and snatch lifts.…”

Section: Discussionmentioning

confidence: 99%

“…23 Most previous studies have examined MMG responses during isometric muscle actions. 8,9,11,29,32,35 Recent studies, however, have investigated MMG amplitude responses during isokinetic [14][15][16]30,31 and isotonic 7,25 muscle actions as well as cycle ergometry. 28,36 Evetovich et al [14][15][16] and Smith et al 30,31 reported velocity-related dissociations between MMG amplitude and peak torque (PT) during maximal, concentric, isokinetic muscle actions.…”

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Mechanomyographic amplitude and mean power output during maximal, concentric, isokinetic muscle actions

et al. 2000

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The purpose of this study was to determine the velocity‐related patterns for mechanomyographic (MMG) amplitude, electromyographic (EMG) amplitude, mean power output (MP), and peak torque (PT) of the superficial muscles of the quadriceps femoris (vastus lateralis [VL], rectus femoris [RF], and vastus medialis [VM]) during maximal, concentric, isokinetic leg extensions. Twelve adult women (mean ± SD: 22 ± 3 years of age) performed such leg extensions at velocities of 60°, 120°, 180°, 240°, and 300°/s on a Cybex 6000 dynamometer. PT decreased (P < 0.05) across velocity to 240°/s. MP and MMG amplitude for each muscle (VL, RF, and VM) increased (P < 0.05) with velocity to 240°/s and then plateaued. EMG amplitude increased (P < 0.05) to 240°/s for the VL, remained unchanged across velocity (P > 0.05) for the RF, and increased (P < 0.05) to 300°/s for the VM. The results indicated close similarities between the velocity‐related patterns for MMG amplitude and MP, but dissociations among EMG amplitude, MMG amplitude, and PT. These findings support the recent hypothesis that MMG amplitude is more closely related to MP than PT during maximal, concentric, isokinetic muscle actions and, therefore, may be useful for monitoring training‐induced changes in muscle power. © 2000 John Wiley & Sons, Inc. Muscle Nerve 23: 1826–1831, 2000

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Section: Discussionmentioning

confidence: 99%

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Mechanomyographic amplitude and mean power output during maximal, concentric, isokinetic muscle actions

et al. 2000

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“…All works used a PIZ to detect MMG signal. Two studies analysed the quadriceps muscle [26,87], while the other two analysed the biceps brachii [88] and the plantar flexors muscles [25], respectively.…”

Section: Mmg Analysis and The Effects Of Trainingmentioning

confidence: 99%

“…Evetovich et al [87] examined the effects of concentric isokinetic leg extension training on MMG MPF in a group of 21 young men. Training consisted in six sets of leg extensions, 3 days per week, for 12 weeks at an angular velocity of 90°/s.…”

Section: Mmg Analysis and The Effects Of Trainingmentioning

confidence: 99%

Novel insights into skeletal muscle function by mechanomyography: from the laboratory to the field

2015

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Purpose The review aimed to provide a wider overview on the new application fields of MMG signal. A particular emphasis on measurements reliability and sensitivity was also given. Methods Five electronic databases were searched for eligible studies published between 2000 and 2014. Two authors assessed selected articles. Several domains (sensor types, participants' characteristics, experimental protocols, investigated muscle/s, measured parameters, and main results) were extracted for analysis. From a total of 1326 citations, 170 were selected for evaluation and 111 studies were identified. Results From the analysis of the literature it resulted that MMG signal (a) has a high level of reliability, especially for the parameters calculated during isometric contractions; (b) can be used to examine muscle mechanical activation and motor unit recruitment strategies under several types of exercise paradigms; (c) is influenced by the mechanical characteristics of cross-bridges and series elastic components, and may provide deeper insights into their behaviour under several physiological models; (d) could be a useful biomarker for triggering orthosis or multifunction access devices, and for the evaluation of patients presenting alterations in muscle function. Conclusions The MMG approach has been proficiently applied in several fields ascribable to both exercise physiology and clinical settings. This approach can provide deeper insights into muscle mechanical behaviour under several physiological models and for the evaluation of patients with altered muscle function.

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“…The EMG signal is the electrical manifestation of the neuromuscular activation associated with muscle contraction [2,25] while the MMG signal records and quantifies the low-frequency lateral oscillations of active skeletal muscle, which reflects the ''mechanical counterpart" of the motor unit electrical activity as measured by EMG [20,24,36,37]. Simultaneous measurements of EMG and MMG have been used to examine muscle fatigue [34], age-related muscle performance [6], neuromuscular disease [3] and athletic training programs [7]. However, previous studies were mostly based on spectral or statistical methods, such as analysis of EMG and MMG mean frequency, median frequency, root mean square of time, correlation coefficient and cross-spectrum.…”

Section: Applicationmentioning

confidence: 99%

Cross-fuzzy entropy: A new method to test pattern synchrony of bivariate time series

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Zheng

Guo

et al. 2010

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The effect of leg extension training on the mean power frequency of the mechanomyographic signal

Cited by 15 publications

References 26 publications

Mechanomyographic amplitude and mean power output during maximal, concentric, isokinetic muscle actions

Mechanomyographic amplitude and mean power output during maximal, concentric, isokinetic muscle actions

Novel insights into skeletal muscle function by mechanomyography: from the laboratory to the field

Cross-fuzzy entropy: A new method to test pattern synchrony of bivariate time series

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