Effects of low-intensity resistance exercise with short interset rest period on muscular function in middle-aged women

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Bibliographic Details
Title translated into German:Die Auswirkungen von Krafttraining mit geringer Intensität und kurzen Satzpausen auf die Muskelfunktion von Frauen im mittleren Lebensalter
Author:Ishii, Naokata; Takarada, Yudai
Published in:Journal of strength and conditioning research
Published:16 (2002), 1, S. 123-128, Lit.
Format: Publications (Database SPOLIT)
Publication Type: Journal article
Media type: Print resource
Language:English
ISSN:1064-8011, 1533-4287
Keywords:
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Identification number:PU201206004243
Source:BISp

Abstract

We investigated the effect of low-intensity resistance exercise training on muscular size and strength where the interset rest period was shortened so as to reduce the metabolite clearance. Female subjects (aged 45.4 ± 9.5 years, n = 10) performed bilateral knee extension exercises in a seated position on an isotonic leg extension machine. The exercise sessions consisted of 3 sets of exercise at a mean intensity of ~50% 1RM with an interset rest period of 30 seconds and was performed twice a week for a period of 12 weeks. The strength and the cross-sectional area (CSA) of the knee extensors and flexors were examined with an isokinetic dynamometer and magnetic resonance imaging (MRI), respectively. The CSAs of the knee extensors and flexors increased by 7.1 ± 1.6% (p < 0.01, Wilcoxon signed rank test) and 2.5 ± 1.4% (not significant), respectively. Isometric and isokinetic strengths increased significantly (p < 0.01) at all velocities examined, whereas no significant change was observed in those of knee flexors. These results indicate that a low-intensity resistance exercise with a short interset rest period is substantially effective in inducing muscular hypertrophy and concomitant increase in strength. Verf.-Referat