TRAINING EFFECTS ON FORCE, VELOCITY AND POWER RELATIONSHIP IN HUMAN MUSCLE
10.7600/jspfsm1949.30.86
- VernacularTitle:人体筋の力・速度・パワー関係に及ぼすトレーニング効果
- Author:
MASAHIRO KANEKO
;
TAKAFUMI FUCHIMOTO
;
HIDEKI TOJI
;
KENSAKU SUEI
- Publication Type:Journal Article
- From:Japanese Journal of Physical Fitness and Sports Medicine
1981;30(2):86-93
- CountryJapan
- Language:Japanese
-
Abstract:
The effects of different intensities of muscle training on the force, velocity and power relationship have been examined on human elbow flexor muscles. Twenty male subjects, 18-22 years of age, were divided into 4 different groups ; G0, G30, G60, and G100. Their training loads were prescribed by a fraction of isometric strength (P0) measured at right angle of elbow joint : 0% P0 (G0 ; isotonic contraction without load), 30% P0 (G30), 60% P0 (G60), and 100% P0 (G100 ; isometric contraction) . The subject contracted his elbow flexors with maximum effort 10 times a day, 3 days a week for 12 weeks. The force-velocity relations and the resultant power output were determined, before and after training period, by a modified Wilkie's apparatus.
The training by maximum isotonic contraction without load (G0) was found to be most effective for improving maximum velocity (V0), while the isometric training improved isometric strength (P0) most. For this, the P-V relations of these groups were specifically modified by greater velocity component (G0) or greater force component (G100) . The G30 and G60 groups showed such all-round improvements that the P-V relations shifted in parallel with those of pre-training period. The maximum power (PVmax), which calculated from P-V relationship, increased most in G30, followed by G100, G60, and G0 groups.
From these results it was concluded that the different training loads brought about specific effects on P-V relation, and that the most effective load for improving maximum power was 30% of isometric strength.
