A comparison of methods used to identify 'optimal' drop height for early phase adaptations in depth jump training

Journal of Strength and Conditioning Research
Paul J ByrneSharon Kinsella

Abstract

The purpose of this study was to compare 2 methods of identifying an appropriate drop height for bounce depth jump (DJ) training, which aimed to improve reactive strength and countermovement jump (CMJ) performance. The maximum jump height (MJH) method was compared to the reactive strength index (RSI) method. The first part of the study identified each participant's drop height for both methods and determined the extent to which both methods differed. The subsequent part of the study used an 8-week bounce DJ training program to compare the effectiveness of the MJH and RSI methods. Twenty-two male participants volunteered. There was a significant difference between the MJH and the RSI methods in the optimal drop height they identified (median = 0.40 and 0.30 m, respectively), with 19 participants exhibiting a difference of 0.10 m or more. These 19 participants were assigned to 1 of 3 training groups: a control, an MJH method, and an RSI method group. The results demonstrated a significant increase in pre to posttraining in reactive strength (MJH: 27.3 +/- 18.7%, p = 0.025; RSI: 11.8 +/- 10.1%, p = 0.019) and CMJ performance (MJH: 9.9 +/- 5.2%, p = 0.009; RSI: 9.2 +/- 4.8%, p = 0.006) in both the MJH and RSI groups, respectively, ...Continue Reading

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Citations

Dec 20, 2012·Journal of Strength and Conditioning Research·Zong-Rong ChenMin-Hsien Wang
May 5, 2017·Journal of Human Kinetics·Zong-Rong ChenHsien-Te Peng
May 11, 2013·Journal of Strength and Conditioning Research·Matthew J Barr, Volker W Nolte
Jun 13, 2019·International Journal of Sports Physiology and Performance·Guillaume P DucrocqGrégory M Blain
May 29, 2015·Journal of Strength and Conditioning Research·Milan S MaticDjordje L J Stefanovic
Jul 7, 2018·Journal of Strength and Conditioning Research·Paul J ByrneSharon Kinsella
Apr 10, 2020·Journal of Strength and Conditioning Research·Cédric LaurentJacques Duchateau
Apr 8, 2020·Journal of Sports Sciences·Rodrigo Ramirez-CampilloFilipe Manuel Clemente
Mar 16, 2017·Journal of Strength and Conditioning Research·Athanasios TsoukosGregory C Bogdanis
Jul 6, 2016·Journal of Strength and Conditioning Research·Damien J ByrneNoel Richardson
Aug 23, 2020·International Journal of Environmental Research and Public Health·Krzysztof MackalaJanez Vodicar
Jun 27, 2013·Journal of Strength and Conditioning Research·Paul J ByrneBrian O' Rourke
Apr 10, 2021·European Journal of Sport Science·Hsien-Te PengLi-I Wang

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