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- Title
The effect of leg extension training on the mean power frequency of the mechanomyographic signal.
- Authors
Evetovich, Tammy K.; Housh, Terry J.; Weir, Joseph P.; Housh, Dona J.; Johnson, Glen O.; Ebersole, Kyle T.; Smith, Douglas B.; Evetovich, T K; Housh, T J; Weir, J P; Housh, D J; Johnson, G O; Ebersole, K T; Smith, D B
- Abstract
The purpose of the present investigation was to examine the effect of concentric isokinetic leg extension training on the mean power frequency (MPF) of the mechanomyographic (MMG) signal. Twenty-one men were assigned into a training (TRN; n = 12) or control (CTL; n = 9) group. The TRN group performed six sets of leg extensions 3 days per week for 12 weeks at a velocity of 90 degrees /s. All subjects were tested every 4 weeks for peak torque (PT), while MMG was recorded from the vastus lateralis. PT increased, but there was no significant (P > 0.05) change in the MMG MPF over the 12-week training period. These results indicate that MMG MPF, measured from the vastus lateralis, was not sensitive to training-induced increases in leg-extension strength, possibly due to competing influences of hypertrophy on the MMG signal and/or training-induced adaptations in muscles other than the vastus lateralis.
- Publication
Muscle & Nerve, 2000, Vol 23, Issue 6, p973
- ISSN
0148-639X
- Publication type
journal article
- DOI
10.1002/(SICI)1097-4598(200006)23:6<973::AID-MUS21>3.0.CO;2-C