Effect of high-speed resistance training on muscle cross-sectional area and speed of movement

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Bibliographic Details
Title translated into German:Auswirkung von Krafttraining mit hoher Frequenz auf den Muskelquerschnitt und die Kontraktionsgeschwindigkeit
Author:Hisaeda, Hikaru; Nakamura, Yoshio; Kuno, Shin-ya; Fukunaga, Tetsuo; Muraoka, Isao
Published in:Japanese journal of physical fitness and sports medicine
Published:45 (1996), 2 , S. 345-355, Lit.
Format: Publications (Database SPOLIT)
Publication Type: Journal article
Media type: Print resource
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Identification number:PU199610200984

Author's abstract

A study was conducted to determine 1) the effect of high-velocity movement in resistance training with a constant load on the velocity of movement after training and 2) the differences in the effect on muscle hypertrophy according to training velocity. Fourteen of the total subjects (male; n=10, female; n=7) were placed in the experimental group and agreed to participate in 8 weeks of training sessions (4 times a week). Five of the 17 subjects were in control a group before the training session. Subjects performed elbow extension and flexion exercise using 50% of one repetition maximum (%1RM) load. The exercise session consisted of 6 sets of 10 repetitions and 30 s of rest was taken between the sets. The subjects in the experimental group trained their arms using two different protocols; one was high-velocity movement performed as rapidly as possible (Type R), the other was low-velocity movement performed at a constant and slow velocity (Type S). Isokinetic torque in elbow flexion was measured at angular velocities of 60, 180, 300 deg/s, respectively, during elbow flexion performed under different constant loads of 0, 30, 50% 1RM, and the muscle cross-sectional area (CSA) of the elbow flexor was determined before and after training. It was found that Type R did not increase isokinetic torque at 300 deg/s significantly after training. However, the increase in angular velocity of elbow flexion in Type R exercise tended to be higher than in Type S exercise. The increase in CSA (Type S; 11.2%. Type R; 14.2%) was significantly higher in Type R exercise. These results suggest that high-velocity movement with a constant load in resistance training might increase the angular velocity of movement in the same mode, but might not produce a change in isokinetic strength, which involves a different mode of muscle contraction. Muscle hypertrophy would be induced to a greater extent by high-velocity movement than by low-velocity movement in resistance training with a constant load. Verf.-Referat