Assessment and monitoring of ballistic and maximal upper-body strength qualities in athletes
Young, Kieran P., Haff, G. Gregory, Newton, Robert U., Gabbett, Tim 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. https://doi.org/10.1123/ijspp.2014-0073
|Authors||Young, Kieran P., Haff, G. Gregory, Newton, Robert U., Gabbett, Tim and Sheppard, Jeremy M.|
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.
|Keywords||bench press; isometric; bench throw; peak force; dynamic strength index|
|Journal||International Journal of Sports Physiology and Performance|
|Journal citation||10 (2), pp. 232 - 237|
|Publisher||Human Kinetics Publishers|
|Digital Object Identifier (DOI)||https://doi.org/10.1123/ijspp.2014-0073|
|Page range||232 - 237|
|Research Group||Sports Performance, Recovery, Injury and New Technologies (SPRINT) Research Centre|
|Place of publication||United States of America|
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