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Haiko B. Zimmermann, Débora Knihs, Fernando Diefenthaeler, Brian MacIntosh, and Juliano Dal Pupo

consequently higher PAP magnitude after a CA. 24 The reason is the greater activity of the enzyme myosin light chain kinase that regulates phosphorylation in type II fibers of the vastus lateralis 25 than in type I fibers. This partially explains the higher PAP verified for athletes involved in sports, which

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Andrew M. Holwerda, Freek G. Bouwman, Miranda Nabben, Ping Wang, Janneau van Kranenburg, Annemie P. Gijsen, Jatin G. Burniston, Edwin C.M. Mariman, and Luc J.C. van Loon

256 proteins that had at least one unique peptide detected in each animal. The dynamic range of the label-free analysis spanned six orders of magnitude. The most abundant muscle protein was myosin light chain 3 (MYL3; relative protein abundances = 9.89E+08), and the least abundant muscle protein

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Marco Beato, Stuart A. McErlain-Naylor, Israel Halperin, and Antonio Dello Iacono

phosphorylation of regulatory light chain is mediated via the enzyme myosin light chain kinase, which leads to a greater rate of cross-bridge attachment. 1 , 7 , 8 This is due to an increased sensitivity of the contractile proteins to calcium (Ca 2+ ), which is released from the sarcoplasmic reticulum. 3 , 9

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Michal Wilk, Michal Krzysztofik, Milosz Drozd, and Adam Zajac

includes increased phosphorylation of myosin light chains, rendering the actin and myosin molecules more sensitive to calcium ions availability, what increases power output and maximal isometric force. 9 , 10 Other mechanisms include higher-order motoneuron recruitment due to high loading conditions

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Olfa Turki, Wissem Dhahbi, Sabri Gueid, Sami Hmaied, Marouen Souaifi, and Riadh Khalifa

performance . J Strength Cond Res . 2010 ; 24 ( 7 ): 1751 – 1754 . PubMed ID: 20512065 doi:10.1519/JSC.0b013e3181ddf665 20512065 10.1519/JSC.0b013e3181ddf665 23. Sweeney H , Bowman BF , Stull JT . Myosin light chain phosphorylation in vertebrate striated muscle: regulation and function . Am J

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Mathias T. Vangsoe, Jonas K. Nielsen, and Carl D. Paton

-1549857 26058479 34. Stuart DS , Lingley MD , Grange RW , Houston ME . Myosin light chain phosphorylation and contractile performance of human skeletal muscle . Can J Physiol Pharmacol . 1988 ; 66 ( 1 ): 49 – 54 . PubMed ID: 3370535 doi:10.1139/y88-009 3370535 10.1139/y88-009

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Ilha G. Fernandes, Matheus A. Souza, Matheus L. Oliveira, Bianca Miarka, Michelle A. Barbosa, Andreia C. Queiroz, and Alexandre C. Barbosa

power compared with a double-leg task ( Bellew & Fenter, 2006 ), leading to firstly recruit Type II fibers, which have a lower basal Ca 2+ sensitivity and greater myosin light chain kinase activity than Type I fibers ( Blazevich & Babault, 2019 ), that is, the PAP mechanism. The “rise-to-toes” task in

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Jennifer Sygo, Alicia Kendig Glass, Sophie C. Killer, and Trent Stellingwerff

exercise . Applied Physiology, Nutrition, and Metabolism, 40 ( 4 ), 414 – 423 . doi:10.1139/apnm-2014-0244 10.1139/apnm-2014-0244 Billeter , R. , Jostarndt-Fogen , K. , Gunthor , W. , & Hoppeler , H. ( 2003 ). Fiber type characteristics and myosin light chain expression in a world champion