The effects of interelectrode distance over the innervation zone and normalization on the electromyographic amplitude and mean power frequency versus concentric, eccentric, and isometric torque relationships for the vastus lateralis muscle

2009 ◽  
Vol 19 (2) ◽  
pp. 219-231 ◽  
Author(s):  
Travis W. Beck ◽  
Terry J. Housh ◽  
Joel T. Cramer ◽  
Joseph P. Weir
Keyword(s):  
Vastus Lateralis ◽  
Interelectrode Distance ◽  
Vastus Lateralis Muscle ◽  
Mean Power ◽  
Mean Power Frequency ◽  
Innervation Zone ◽  
Lateralis Muscle ◽  
Power Frequency ◽  
Isometric Torque

Interlimb Neuromuscular Responses During Fatiguing, Bilateral, Leg Extension Exercise at a Moderate Versus High Load

Motor Control ◽  
2021 ◽  
Vol 25 (1) ◽  
pp. 59-74
Author(s):  
Taylor K. Dinyer ◽  
Pasquale J. Succi ◽  
M. Travis Byrd ◽  
Caleb C. Voskuil ◽  
Evangeline P. Soucie ◽  
...  
Keyword(s):  
Vastus Lateralis ◽  
High Load ◽  
Mean Power ◽  
Mean Power Frequency ◽  
Leg Extension ◽  
Neuromuscular Responses ◽  
Power Frequency ◽  
The Central Nervous System ◽  
Common Drive ◽  
Repetitions To Failure

This study determined the load- and limb-dependent neuromuscular responses to fatiguing, bilateral, leg extension exercise performed at a moderate (50% one-repetition maximum [1RM]) and high load (80% 1RM). Twelve subjects completed 1RM testing for the bilateral leg extension, followed by repetitions to failure at 50% and 80% 1RM, on separate days. During all visits, the electromyographic (EMG) and mechanomyographic (MMG), amplitude (AMP) and mean power frequency (MPF) signals were recorded from the vastus lateralis of both limbs. There were no limb-dependent responses for any of the neuromuscular signals and no load-dependent responses for EMG AMP, MMG AMP, or MMG MPF (p = .301–.757), but there were main effects for time that indicated increases in EMG and MMG AMP and decreases in MMG MPF. There was a load-dependent decrease in EMG MPF over time (p = .032) that suggested variability in the mechanism responsible for metabolite accumulation at moderate versus high loads. These findings suggested that common drive from the central nervous system was used to modulate force during bilateral leg extension performed at moderate and high loads.

The effects of interelectrode distance on electromyographic amplitude and mean power frequency during incremental cycle ergometry

2006 ◽  
Vol 151 (2) ◽  
pp. 139-147 ◽  
Author(s):  
Moh H. Malek ◽  
Terry J. Housh ◽  
Jared W. Coburn ◽  
Joseph P. Weir ◽  
Richard J. Schmidt ◽  
...  
Keyword(s):  
Cycle Ergometry ◽  
Interelectrode Distance ◽  
Mean Power ◽  
Mean Power Frequency ◽  
Power Frequency

The effects of innervation zone on electromyographic amplitude and mean power frequency during incremental cycle ergometry

2006 ◽  
Vol 155 (1) ◽  
pp. 126-133 ◽  
Author(s):  
Moh H. Malek ◽  
Jared W. Coburn ◽  
Joseph P. Weir ◽  
Travis W. Beck ◽  
Terry J. Housh
Keyword(s):  
Cycle Ergometry ◽  
Mean Power ◽  
Mean Power Frequency ◽  
Innervation Zone ◽  
Power Frequency

The Effect Of Electrode Orientation On Electromyographic Amplitude And Mean Power Frequency Versus Isometric Torque Relationships

2009 ◽  
Vol 41 ◽  
pp. 199-200
Author(s):  
Clayton Camic ◽  
Michelle Mielke ◽  
C. Russell Hendrix ◽  
Jorge Zuniga ◽  
Terry J. Housh ◽  
...  
Keyword(s):  
Mean Power ◽  
Mean Power Frequency ◽  
Power Frequency ◽  
Isometric Torque
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