Two maximal isometric contractions attenuate the magnitude of eccentric exercise-induced muscle damage

Applied Physiology, Nutrition, and Metabolism = Physiologie Appliquée, Nutrition Et Métabolisme
Hsin-Lian ChenTrevor C Chen

Abstract

This study investigated whether maximal voluntary isometric contractions (MVC-ISO) would attenuate the magnitude of eccentric exercise-induced muscle damage. Young untrained men were placed into one of the two experimental groups or one control group (n = 13 per group). Subjects in the experimental groups performed either two or 10 MVC-ISO of the elbow flexors at a long muscle length (20° flexion) 2 days prior to 30 maximal isokinetic eccentric contractions of the elbow flexors. Subjects in the control group performed the eccentric contractions without MVC-ISO. No significant changes in maximal voluntary concentric contraction peak torque, peak torque angle, range of motion, upper arm circumference, plasma creatine kinase (CK) activity and myoglobin concentration, muscle soreness, and ultrasound echo intensity were evident after MVC-ISO. Changes in the variables following eccentric contractions were smaller (P < 0.05) for the 2 MVC-ISO group (e.g., peak torque loss at 5 days after exercise, 23% ± 3%; peak CK activity, 1964 ± 452 IU·L(-1); peak muscle soreness, 46 ± 4 mm) or the 10 MVC-ISO group (13% ± 3%, 877 ± 198 IU·L(-1), 30 ± 4 mm) compared with the control (34% ± 4%, 6192 ± 1747 IU·L(-1), 66 ± 5 mm). The 10 MVC-ISO group s...Continue Reading

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Citations

Jan 12, 2013·European Journal of Applied Physiology·Trevor C ChenKazunori Nosaka
Aug 19, 2015·European Journal of Applied Physiology·Felipe DamasCarlos Ugrinowitsch
Oct 16, 2015·The Journal of Physiological Sciences : JPS·Kazue Mizumura, Toru Taguchi
May 18, 2016·Medicine and Science in Sports and Exercise·Trevor C ChenKazunori Nosaka
Oct 28, 2017·Medicine and Science in Sports and Exercise·Trevor C ChenKazunori Nosaka
Jul 10, 2019·Scandinavian Journal of Medicine & Science in Sports·Fabiano Freitas ShiromaruEmerson Luiz Teixeira
Jul 13, 2019·Applied Physiology, Nutrition, and Metabolism = Physiologie Appliquée, Nutrition Et Métabolisme·Masashi TaniguchiNoriaki Ichihashi
Apr 17, 2014·Journal of Strength and Conditioning Research·Adilson J MeneghelCharles R Lopes
Jan 10, 2020·Applied Physiology, Nutrition, and Metabolism = Physiologie Appliquée, Nutrition Et Métabolisme·Dustin J OranchukJohn B Cronin
Aug 24, 2017·Medicine and Science in Sports and Exercise·Alexander FranzMoritz Schumann
May 16, 2015·Journal of Applied Physiology·Jonathan M PeakeVernon G Coffey
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Jul 31, 2019·Journal of Strength and Conditioning Research·Dustin J OranchukJohn B Cronin
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Dec 10, 2020·Muscle & Nerve·Donovan J LottKrista Vandenborne
Dec 23, 2020·Scandinavian Journal of Medicine & Science in Sports·Chih-Chiao HoTrevor C Chen
Sep 15, 2021·Journal of Ultrasound·Jaquelini Betta CaneverKelly Mônica Marinho E Lima

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