Muscle damage induced by stretch-shortening cycle exercise

Medicine and Science in Sports and Exercise
Heikki KyröláinenPaavo V Komi

Abstract

Strenuous stretch-shortening cycle exercise was used as a model to study the leakage of proteins from skeletal muscle. The analysis included serum levels of creatine kinase (S-CK), myoglobin (S-Mb), and carbonic anhydrase (S-CA III). Blood samples from power- (N=11) and endurance-trained (N=10) athletes were collected before, 0, and 2 h after the exercise, which consisted of a total of 400 jumps. The levels of all determined myocellular proteins increased immediately after the exercise (P < 0.05-0.001) among both subject groups. In the endurance group, the protein levels increased (P < 0.05-0.001) further during the following 2 h after the exercise, and the ratio of S-CA III and S-Mb decreased (P < 0.05) in a before-after comparison. This was not the case among the power group despite their greater mechanical work (P < 0.001) and higher ratio of eccentric and concentric EMG activity of the leg extensor muscles (P < 0.05). The differences of the determined protein levels between the subject groups might be due to obvious differences in the muscle fiber distribution, differences in recruitment order of motor units, and/or differences in training background.

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Citations

Jun 13, 2008·Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology·Satu MänttäriMatti Järvilehto
Sep 30, 2008·Journal of Sports Sciences·Pedro TaulerAntoni Pons
Oct 4, 2013·International Journal of Sports Physiology and Performance·Federico SchenaCarlo Capelli
Dec 7, 2014·European Journal of Applied Physiology·Merja Hoffrén-MikkolaPaavo V Komi
Jun 8, 2012·Journal of Muscle Research and Cell Motility·M van de Vyver, K H Myburgh
May 24, 2011·Journal of Strength and Conditioning Research·Christopher P McLellanGregory C Gass
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Feb 20, 2007·Scandinavian Journal of Medicine & Science in Sports·S KuitunenP V Komi
Aug 8, 2015·Research in Sports Medicine·Pablo AbiánJavier Abián-Vicén
Apr 22, 2018·The Journal of Physiological Sciences : JPS·Airi NakayamaAkane Higashi
Apr 2, 2009·Scandinavian Journal of Medicine & Science in Sports·J R TurnbullJ W L Keogh
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Sep 15, 2010·Sports Medicine·Goran Markovic, Pavle Mikulic
Nov 5, 2011·Applied Physiology, Nutrition, and Metabolism = Physiologie Appliquée, Nutrition Et Métabolisme·Albertas SkurvydasAurelijus Zuoza

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