The effects of strength training on muscle fiber conduction velocity of surface action potential / 体力科学
Japanese Journal of Physical Fitness and Sports Medicine
; : 99-105, 1990.
Article
en Ja
| WPRIM
| ID: wpr-371491
Biblioteca responsable:
WPRO
ABSTRACT
We investigated the effects of strength training a 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 electorode 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 (p<0.01), 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 (p<0.01) . 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.
Texto completo:
1
Base de datos:
WPRIM
Idioma:
Ja
Revista:
Japanese Journal of Physical Fitness and Sports Medicine
Año:
1990
Tipo del documento:
Article