Affiliations: [a] Center for Youth Fitness and Sports Research,
Department of Health and Human Performance, University of Nebraska-Lincoln,
Lincoln, NE 68588-0229, USA
Note: [] Corresponding author: Tammy K. Evetovich, School of Human
Performance and Recreation, The University of Southern Mississippi, Box 5142,
Hattiesburg, MS 39406, USA, Tel.: +1 601 266-6223; Fax: +1 601 266-4445;
E-mail: Tammy.Evetovich@usm.edu
Abstract: The purpose of the present investigation was to examine the effect
of concentric isokinetic leg extension training on peak torque (PT) and
mechanomyographic (MMG) responses. Twenty-one males were assigned into a
training (TRN, n=12) or control (CTL, n=9) group. The training group performed
six sets of ten leg extensions three days per week for twelve weeks at a
velocity of 90\dgs. All subjects were tested every four weeks for PT and MMG
responses at a velocity of 90 dgs. The two-way mixed factorial ANOVA indicated
a significant increase (p < 0.05) in PT over the twelve weeks for the TRN
group but no significant change (p>0.05) in PT for the CTL group. For the
MMG there was no significant (p>0.05) interaction, therefore, the TRN and
CTL groups exhibited the same pattern of responses over the twelve-week
training period. The reason for the increase in PT in the absence of a change
in MMG may be due to hypertrophy and/or changes in other muscles involved in
leg extension.
