Mechanomyographic amplitude and frequency responses during dynamic muscle actions: a comprehensive review |
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Authors: | Email author" target="_blank">Travis?W?BeckEmail author Terry?J?Housh Joel?T?Cramer Joseph?P?Weir Glen?O?Johnson Jared?W?Coburn Moh?H?Malek Michelle?Mielke |
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Institution: | (1) Department of Nutrition and Health Sciences, Human Performance Laboratory, University of Nebraska-Lincoln, 68583 Lincoln, NE, USA;(2) Department of Health and Exercise Science, University of Oklahoma, 73019 Norman, OK, USA;(3) Applied Physiology Laboratory, Division of Physical Therapy, Des Moines University, Osteopathic Medical Center, 50312 Des Moines, IA, USA;(4) Department of Kinesiology, California State University, 92834 Fullerton, CA, USA |
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Abstract: | The purpose of this review is to examine the literature that has investigated mechanomyographic (MMG) amplitude and frequency
responses during dynamic muscle actions. To date, the majority of MMG research has focused on isometric muscle actions. Recent
studies, however, have examined the MMG time and/or frequency domain responses during various types of dynamic activities,
including dynamic constant external resistance (DCER) and isokinetic muscle actions, as well as cycle ergometry. Despite the
potential influences of factors such as changes in muscle length and the thickness of the tissue between the muscle and the
MMG sensor, there is convincing evidence that during dynamic muscle actions, the MMG signal provides valid information regarding
muscle function. This argument is supported by consistencies in the MMG literature, such as the close relationship between
MMG amplitude and power output and a linear increase in MMG amplitude with concentric torque production. There are still many
issues, however, that have yet to be resolved, and the literature base for MMG during both dynamic and isometric muscle actions
is far from complete. Thus, it is important to investigate the unique applications of MMG amplitude and frequency responses
with different experimental designs/methodologies to continually reassess the uses/limitations of MMG. |
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