NDLI: Muscle force per cross-sectional area is inversely related with pennation angle in strength trained athletes.

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Muscle force per cross-sectional area is inversely related with pennation angle in strength trained athletes.

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Muscle force per cross-sectional area is inversely related with pennation angle in strength trained athletes.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Ikegawa, Shigeki Funato, Kazuo Tsunoda, Naoya Kanehisa, Hiroaki Fukunaga, Tetsuo Kawakami, Yasuo
Description	Country affiliation: Japan Author Affiliation: Ikegawa S ( Faculty of Human Health Science, Tokyo Metropolitan University, Tokyo, Japan. ikegawa@opal.famille.ne.jp)
Abstract	The present study aimed to examine the effect of pennation angle on the force per cross-sectional area for elbow extensor muscles in strength-trained athletes. A total of 52 male bodybuilders (n = 32) and Olympic weightlifters (n = 20) did maximal isometric elbow extension on an isokinetic dynamometer. Muscle cross-sectional area (CSA) and muscle-fiber pennation angle (PA) of the triceps brachii muscles were measured by ultrasonography. Bodybuilders had significantly greater isometric elbow extension force (F), CSA and PA than weightlifters. The ratio of force to CSA (F/CSA) of bodybuilders was significantly lower than that of weightlifters. A significant positive correlation was observed between CSA and PA in both groups (r = 0.832, P < 0.001, and r = 0.682, P < 0.001, for bodybuilders and weightlifters, respectively). The F/CSA was negatively correlated to PA both for bodybuilders (r = -0.408, P < 0.05) and weightlifters (r = -0.465, P < 0.05). Thus present study indicates that the larger pennation angle is associated with the lower force relative to muscle CSA in strength-trained athletes.
File Format	HTM / HTML
ISSN	10648011
Issue Number	1
Volume Number	22
e-ISSN	15334287
Journal	Journal of Strength and Conditioning Research
Language	English
Publisher	Lippincott Williams & Wilkins
Publisher Date	2008-01-01
Publisher Place	United States
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discipline Sport Sciences Athletic Performance Muscle Contraction Physiology Muscle Strength Muscle, Skeletal Weight Lifting Adult Anthropometry Biomechanical Phenomena Humans Isometric Contraction Male Muscle Fibers, Skeletal Physical Education And Training Methods Probability Sensitivity And Specificity Upper Extremity Journal Article
Content Type	Text
Resource Type	Article
Subject	Orthopedics and Sports Medicine Physical Therapy, Sports Therapy and Rehabilitation Sports Science

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