Title

Comparison of ballistic and strength training on swimming turn and dry-land leg extensor characteristics in elite swimmers

Document Type

Journal Article

Publisher

Sage Publications

School

Centre for Exercise and Sport Science Research

RAS ID

26079

Comments

Jones, J. V., Pyne, D. B., Haff, G. G., & Newton, R. U. (2017). Comparison of ballistic and strength training on swimming turn and dry-land leg extensor characteristics in elite swimmers. International Journal of Sports Science & Coaching. 13(2). 262-269. Available here.

Abstract

Swimmers undertake dry-land resistance training as part of their overall training regime in order to increase lower body force output, impulse and swim turn performance. We investigated whether short-term ballistic training or maximal strength training is more effective in enhancing leg extensor force characteristics during the swim turn. Twelve elite swimmers (10 males and 2 females 19.4 ± 1.0 y) were assigned to either strength (n = 6) or ballistic leg extensor (n = 6) training based on their coaching group for a six-week period. All testing was conducted during the final training cycle towards the World Championships selection trials. Swimmers undertook dry-land testing of a squat jump on a portable force platform with bodyweight only and an additional 30 kg load for males and 20 kg load for females. On the same day, all swimmers performed a turn analysis using a fixed force platform within the pool wall. There were no substantial differences between the strength and ballistic groups after the six-week intervention. Only squat jump peak velocity (loaded) showed a moderately large standardized difference (–0.71, ± 0.42 m/s) after six weeks in the strength-trained group. Relative peak power (4.0 ± 2.1 W/kg), squat jump peak force (loaded and unloaded) (195.0, ± 122.8 N; 155.0, ± 152.3 N), and squat jump impulse (unloaded) (2.9, ± 2.1 N) all showed small and clear improvements with ballistic training over the six-week intervention. Both strength and ballistic dry-land training can improve aspects of the push-off stage of the swim turn providing programming options for swimming and strength and conditioning coaches.

DOI

10.1177/1747954117726017

Share

 
COinS