Abstract：
:Isometric unilateral elbow extension training was conducted for 10 weeks (3 times per week) on 12 young adult men to investigate the effects of equivolume exercise programs with different combinations of intensity and duration on the morphological and functional aspects of the triceps brachii muscle. One group of 6 subjects trained by developing maximal voluntary contraction (MVC) for 6 s per set with 12 sets per session (100%G), while the other group of 6 subjects trained at 60% of MVC for 30 s per set with 4 sets per session (60%G). Training significantly increased the muscle volume ( V(m)), fascicle pennation angle of the triceps brachii, and torque output during concentric and eccentric elbow extensions at three constant velocities of 0.52, 1.57, and 3.14 rad.s(-1) as well as under the training condition, with no significant differences in the relative gains between the two programs. However, 100%G showed significantly greater V(m) than 60%G after training, when V(m) before training was normalized. Thus, only 60%G significantly increased the ratio of torque to V(m) developed in the eccentric actions at the three velocities and concentric action at 1.57 rad.s(-1). The present results indicate that isometric training programs of medium resistance/long duration and high resistance/short duration produce different effects on V(m) and dynamic strength relative to V(m), even if the training volume is equalized between the two protocols.
journal_name
Eur J Appl Physioljournal_title
European journal of applied physiologyauthors
Kanehisa H,Nagareda H,Kawakami Y,Akima H,Masani K,Kouzaki M,Fukunaga Tdoi
10.1007/s00421-002-0604-6keywords:
subject
Has Abstractpub_date
2002-06-01 00:00:00pages
112-9issue
2eissn
1439-6319issn
1439-6327journal_volume
87pub_type
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