Assessment and monitoring of ballistic and maximal upper-body strength qualities in athletes

Young, Kieran P. and Haff, G. Gregory and Newton, Robert U. and Gabbett, Tim J. and Sheppard, Jeremy M. (2015) Assessment and monitoring of ballistic and maximal upper-body strength qualities in athletes. International Journal of Sports Physiology and Performance, 10 (2). pp. 232-237. ISSN 1555-0265

Abstract

Purpose: To evaluate whether the dynamic strength index (DSI: ballistic peak force/isometric peak force) could be effectively used to guide specific training interventions and detect training-induced changes in maximal and ballistic strength. Methods: Twenty-four elite male athletes were assessed in the isometric bench press and a 45% 1-repetition-maximum (1RM) ballistic bench throw using a force plate and linear position transducer. The DSI was calculated using the peak force values obtained during the ballistic bench throw and isometric bench press. Athletes were then allocated into 2 groups as matched pairs based on their DSI and strength in the 1RM bench press. Over the 5 wk of training, athletes performed either high-load (80-100% 1RM) bench press or moderate-load (40-55% 1RM) ballistic bench throws. Results: The DSI was sensitive to disparate training methods, with the bench-press group increasing isometric bench-press peak force (P = .035, 91% likely), and the ballistic-bench-throw group increasing bench-throw peak force to a greater extent (P ≤ .001, 83% likely). A significant increase (P ≤ .001, 93% likely) in the DSI was observed for both groups. Conclusions: The DSI can be used to guide specific training interventions and can detect training-induced changes in isometric bench-press and ballistic bench-throw peak force over periods as short as 5 wk.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Published version cannot be displayed due to copyright restrictions.
Faculty / Department / School: No Faculty
Date Deposited: 29 May 2017 06:15
Last Modified: 29 May 2017 06:15
Uncontrolled Keywords: bench press; bench throw; dynamic strength index; isometric; peak force; adolescent; adult; humans; male; muscle strength; muscle strength dynamometer; resistance training; upper extremity; weight lifting; young adult
Fields of Research : 11 Medical and Health Sciences > 1106 Human Movement and Sports Science > 110699 Human Movement and Sports Science not elsewhere classified
Socio-Economic Objective: C Society > 92 Health > 9299 Other Health > 929999 Health not elsewhere classified
Identification Number or DOI: 10.1123/ijspp.2014-0073
URI: http://eprints.usq.edu.au/id/eprint/32299

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