The effects of strength training on muscle architecture in humans

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Deutscher übersetzter Titel:Die Effekte von Krafttraining auf die Muskelzusammensetzung beim Menschen
Autor:Kawakami, Yasuo
Erschienen in:International journal of sport and health science
Veröffentlicht:3 (2005), Spec. Issue 1, S. 208-217, Lit.
Format: Literatur (SPOLIT)
Publikationstyp: Zeitschriftenartikel
Medienart: Elektronische Ressource (online) Gedruckte Ressource
Sprache:Englisch
ISSN:1880-4012, 0915-3942, 1348-1509
DOI:10.5432/ijshs.3.208
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Erfassungsnummer:PU200904002207
Quelle:BISp

Abstract

The present paper reviews previous studies on changes in muscle architecture in humans as a result of strength training. Muscle architecture here refers to 1) muscle size, 2) pennation angle, and 3) muscle fiber length. Training-induced changes are summarized respectively. A typical outcome of strength training is muscle hypertrophy, which is manifested as an increase in muscle size evaluated by cross-sectional area and muscle volume. However, changes also occur in pennation angles and, possibly, in muscle fiber lengths. Increased pennation angles after training have the detrimental effect of producing a reduced force transmission from muscle fibers to tendon, which might lead to a decrease in specific tension or muscle force per physiological cross-sectional area. Recent in vivo studies on human muscles have revealed that changes in pennation angles resulting from training and contraction are much greater than previously thought. Verf.-Referat