Effects of number of eccentric muscle actions on first and second bouts of eccentric exercise of the elbow flexors

Journal of Science and Medicine in Sport
T C Chen, Kazunori Nosaka

Abstract

This study compared changes in indirect markers of muscle damage following eccentric exercise of the elbow flexors among the exercises consisting of different number of eccentric actions. Sixty male athletes were placed into one of the six groups (n=10 per group) based on the number of eccentric actions for the first (ECC1) and second exercise bouts (ECC2). Single bout groups (30, 50, and 70) performed ECC1 only, and repeated bout groups (30-30, 50-50, and 70-70) performed ECC2 3 days after ECC1. Another 10 male athletes performed different number of eccentric actions for ECC1 (30) and ECC2 (70) separated by 3 days (30-70). Changes in maximal isometric strength (MVC), range of motion (ROM), upper arm circumference (CIR), serum creatine kinase activity, myoglobin, and nitric oxide concentrations and muscle soreness for 10 days following ECC1 were compared among groups by two-way repeated measures ANOVA. Changes in MVC, ROM, and CIR following ECC1 were significantly (P<0.05) smaller for the groups that performed 30 eccentric actions compared with other groups. No significant differences between 30 and 30-30, 50 and 50-50, and 70 and 70-70 were evident for the changes in the measures for 10 days following ECC1 except for the acute...Continue Reading

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Citations

May 26, 2011·Applied Physiology, Nutrition, and Metabolism = Physiologie Appliquée, Nutrition Et Métabolisme·Hamilton RoschelValmor Tricoli
Nov 17, 2009·Journal of Strength and Conditioning Research·Akihiro SakamotoPeter James Sinclair
Dec 8, 2009·Journal of Strength and Conditioning Research·Dale W ChapmanKazunori Nosaka
Feb 17, 2009·Physical Therapy in Sport : Official Journal of the Association of Chartered Physiotherapists in Sports Medicine·Dominic Micklewright
Nov 3, 2010·Scandinavian Journal of Medicine & Science in Sports·T PullinenP V Komi
Jul 12, 2016·Journal of Strength and Conditioning Research·Bruno M BaroniRonei S Pinto
Apr 15, 2008·Medicine and Science in Sports and Exercise·Dale Wilson ChapmanKazunori Nosaka
Feb 6, 2020·Research Quarterly for Exercise and Sport·Thiago Ferreira Dias KanthackFranck Di Rienzo
Jun 1, 2016·Journal of Strength and Conditioning Research·Michel A BrentanoLuiz F M Kruel

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