Mean power frequency and amplitude of the mechanomyographic and electromyographic signals during incremental cycle ergometry

The purpose of this investigation was to determine the relationships for mechanomyographic (MMG) amplitude, MMG mean power frequency (MPF), electromyographic (EMG) amplitude, and EMG MPF versus power output during incremental cycle ergometry. Seventeen adults volunteered to perform an incremental te...

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Bibliographic Details
Published in:Journal of electromyography and kinesiology 2001-08, Vol.11 (4), p.299-305
Main Authors: Perry, Sharon R, Housh, Terry J, Weir, Joseph P, Johnson, Glen O, Bull, Anthony J, Ebersole, Kyle T
Format: Article
Language:English
Subjects:
Adult
Biomechanical Phenomena
Electromyography
Ergometry
Female
Humans
Male
Mean power frequency
Mechanomyography
Motor control strategies
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Summary:The purpose of this investigation was to determine the relationships for mechanomyographic (MMG) amplitude, MMG mean power frequency (MPF), electromyographic (EMG) amplitude, and EMG MPF versus power output during incremental cycle ergometry. Seventeen adults volunteered to perform an incremental test to exhaustion on a cycle ergometer. The test began at 50 W and the power output was increased by 30 W every 2 min until the subject could no longer maintain 70 rev min −1. The MMG and EMG signals were recorded simultaneously from the vastus lateralis during the final 10 s of each power output and analyzed. MMG amplitude, MMG MPF, EMG amplitude, EMG MPF, and power output were normalized as a percentage of the maximal value from the cycle ergometer test. Polynomial regression analyses indicated that MMG amplitude increased ( P0.05) in MMG MPF. EMG amplitude and MPF were fit best ( P
ISSN:1050-6411
1873-5711
DOI:10.1016/S1050-6411(00)00057-2