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Hyun Chul Jung, Myong Won Seo, Sukho Lee, Sung Woo Jung and Jong Kook Song

., Ltd., Niigata, Japan). Subjects stood on the circular rubber mat (38-cm diameter) with the jumper line attached at the waists. Subject jumped vertically with maximal effort against the resistance of the jumper line and landed on the rubber mat. Vertical jump height was calculated with a traveling

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Adam Grainger, Paul Comfort and Shane Heffernan

in “real-world” settings, with the best of performance (jump height) used for further analysis. A rapid countermovement was conducted by the participants descending until the knee angle reached approximately 90°, followed immediately by a vertical jump. Participants were instructed to jump as high as

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Kristof Kipp, John Krzyszkowski and Daniel Kant-Hull

. 2002 ; 154 ( 1–2 ): 135 – 150 . doi:10.1016/S0304-3800(02)00064-9 10.1016/S0304-3800(02)00064-9 12. Nuzzo JL , Anning JH , Scharfenberg JM . The reliability of three devices used for measuring vertical jump height . J Strength Cond Res . 2011 ; 25 ( 9 ): 2580 – 2590 . PubMed ID: 21804426 doi

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Daniel Boullosa, César C.C. Abad, Valter P. Reis, Victor Fernandes, Claudio Castilho, Luis Candido, Alessandro M. Zagatto, Lucas A. Pereira and Irineu Loturco

; RSI, reactive strength index. Procedures Vertical-Jump Assessments The DJ and countermovement jump (CMJ) assessments were performed following previous standard protocols 9 on a contact platform (Elite Jump; S2 Sports, São Paulo, Brazil). Warm-Up Protocols The standard warm-up protocol consisted of 10

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Pierre Samozino, Jean Romain Rivière, Jérémy Rossi, Jean-Benoit Morin and Pedro Jimenez-Reyes

): 59 – 68 . PubMed ID: 26398964 doi:10.1123/jab.2015-0070 10.1123/jab.2015-0070 26398964 8. Vuk S , Markovic G , Jaric S . External loading and maximum dynamic output in vertical jumping: the role of training history . Hum Mov Sci . 2012 ; 31 ( 1 ): 139 – 151 . PubMed ID: 21862162 doi:10

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Thomas M. Comyns, Eamonn P. Flanagan, Sean Fleming, Evan Fitzgerald and Damian J. Harper

muscle activity on concentric performance during vertical jumping . J Strength Cond Res . 2008 ; 22 ( 3 ): 750 – 757 . PubMed ID: 18438244 doi:10.1519/JSC.0b013e31816a83ef. 18438244 10.1519/JSC.0b013e31816a83ef 18. Buchheit M . The numbers will love you back in return—I promise . Int J Sports

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Paul Comfort, Christopher Thomas, Thomas Dos’Santos, Paul A. Jones, Timothy J. Suchomel and John J. McMahon

.0000000000001243 5. Thomas C , Jones PA , Rothwell J , Chiang CY , Comfort P . An investigation into the relationship between maximum isometric strength and vertical jump performance . J Strength Cond Res . 2015 ; 29 ( 8 ): 2176 – 2185 . PubMed doi:10.1519/JSC.0000000000000866 25647649 10.1519/JSC

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Matthew A. Wyon, Roger Wolman, Nicolas Kolokythas, Karen Sheriff, Shaun Galloway and Adam Mattiussi

.2165/00007256-200434100-00003 15335242 10.2165/00007256-200434100-00003 16. Thomas C , Comfort P , Jones PA , Dos’ Santos T . A Comparison of isometric midthigh-pull strength, vertical jump, sprint speed, and change-of-direction speed in academy netball players . Int J Sports Physiol Perform . 2016 ; 12 ( 7 ): 916 – 921

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Hayden J. Pritchard, Matthew J. Barnes, Robin J. Stewart, Justin W. Keogh and Michael R. McGuigan

studies, improvements in power performance have often also occurred in conjunction with improved performance in dynamic strength tasks. Coutts et al 6 showed increases in vertical jump performance following a tapering period as well as improvements in 3RM squat and bench press and measures of quadriceps

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Gary J. Slater, Jennifer Sygo and Majke Jorgensen

affect power-to-weight ratio in isolation. Intentional dehydration is an alternative approach to acutely promote sufficient weight loss to potentially favorably influence power-to-weight ratio. Indeed, there is some evidence to show an enhancement in vertical jump performance following dehydration