The effects of strength training on muscle fiber conduction velocity of surface action potential
Deutscher übersetzter Titel: | Auswirkungen von Krafttraining auf die Leitungsgeschwindigkeit von Oberflaechenaktionspotentialen in der Muskelfaser |
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Autor: | Matsunaga, Satoshi; Sadoyama, Tsugutake; Miyata, Hirofumi; Katsuta, Shigeru |
Erschienen in: | Japanese journal of physical fitness and sports medicine |
Veröffentlicht: | 39 (1990), 2, S. 99-105, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Gedruckte Ressource |
Sprache: | Englisch |
ISSN: | 0039-906X, 1881-4751 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU199205046376 |
Quelle: | BISp |
Abstract
We investigated the effects of strength training on muscle fiber conduction velocity in biceps brachii of 7 male students. The subjects were trained to exhaustion by 60 of maximum isotonic voluntary contraction with 3 sets/day, 3 days/week for 16 weeks. The muscle fiber conduction velocity was measured with a surface electrode array placed along the muscle fibers, and calculated from the time delay between 2 myoelectric signals recorded during a maximal voluntary contraction. Upper arm girth significantly increased, from 29.2 +/- 1.4 cm (means +/- S. D.) to 30.6 +/- 1.5 cm. On the other hand, training induced no significant changes in upper arm skinfold. A significant difference between pre- and post-training was found in maximum isotonic strength. Although maximum isometric strength showed no significant changes with training, there was a tendency for an increase in maximum isometric strength. Muscle fiber conduction velocity increased by 3.5 during training period, but this was not significant. These results suggest no effects of strength training on muscle fiber conduction velocity. Verf.-Referat