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Open AccessFeature PaperArticle

A Comparison of Dynamic Strength Index between Team-Sport Athletes

1
Directorate of Sport, Exercise and Physiotherapy, University of Salford, Greater Manchester M6 6PU, UK
2
School of Health, Sport and Professional Practice, University of South Wales, Pontypridd CF37 1DL, Wales, UK
*
Author to whom correspondence should be addressed.
Sports 2017, 5(3), 71; https://doi.org/10.3390/sports5030071
Received: 14 August 2017 / Revised: 7 September 2017 / Accepted: 19 September 2017 / Published: 20 September 2017
(This article belongs to the Special Issue The Role of Strength on Performance in Athletic Tasks)
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PDF [212 KB, uploaded 20 September 2017]

Abstract

The purpose of this study was to examine the differences in countermovement jump peak force (CMJ-PF), isometric mid-thigh pull peak force (IMTP-PF), and resultant dynamic strength index (DSI) values between team-sport athletes. One hundred and fifteen male and female team-sport athletes performed the CMJ and IMTP to determine peak force (CMJ-PF and IMTP-PF, respectively). Statistically and practically significant differences (p ≤ 0.050; d = 0.49–1.32) in CMJ-PF were evident between teams. Specifically, the greatest CMJ-PFs were produced by the male cricket players and were followed in order by the male basketball, male soccer, female netball, female cricket, and female soccer players. Statistically and practically significant differences (p ≤ 0.045; d = 0.64–1.78) in IMTP-PF existed among sports teams, with the greatest IMTP-PFs were produced by the male soccer players and were followed in order by the male cricket, male basketball, female netball, female soccer, and female cricket players. Statistically and practically significant differences (p ≤ 0.050; d = 0.92–1.44) in DSI were found between teams. These findings demonstrate that CMJ-PF, IMTP-PF, and DSI differ between sports teams and provide normative data for ballistic and isometric PF measures. Strength and conditioning coaches should consider relative changes in CMJ-PF and IMTP-PF when assessing DSI ratios. View Full-Text
Keywords: peak force; countermovement jump; isometric mid-thigh pull; strength assessment peak force; countermovement jump; isometric mid-thigh pull; strength assessment
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Thomas, C.; Dos’Santos, T.; Jones, P.A. A Comparison of Dynamic Strength Index between Team-Sport Athletes. Sports 2017, 5, 71.

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