Document Detail

Effect of twelve weeks of medicine ball training on high school baseball players.
MedLine Citation:
PMID:  17685676     Owner:  NLM     Status:  MEDLINE    
This study examined the effect of 12 weeks of medicine ball training on high school baseball players. Forty-nine baseball players (age 15.4 +/- 1.2 years) were randomly assigned using a stratified sampling technique to 1 of 2 groups. Group 1 (n = 24) and group 2 (n = 25) performed the same full-body resistance exercises according to a stepwise periodized model and took 100 bat swings a day, 3 days per week, with their normal game bat for 12 weeks. Group 2 performed additional rotational and full-body medicine ball exercises 3 days per week for 12 weeks. Pre- and post-testing consisted of a 3 repetition maximum (RM) dominant and nondominant torso rotational strength and sequential hip-torso-arm rotational strength (medicine ball hitter's throw). A 3RM parallel squat and bench press were measured at 0 and after 4, 8, and 12 weeks of training. Although both groups made statistically significant increases (p < or = 0.05) in dominant (10.5 vs. 17.1%) and nondominant (10.2 vs. 18.3%) torso rotational strength and the medicine ball hitter's throw (3.0 vs. 10.6%), group 2 showed significantly greater increases in all 3 variables than group 1. Furthermore, both groups made significant increases in predicted 1RM parallel squat and bench press after 4, 8, and 12 weeks of training; however, there were no differences between groups. These data indicate that performing a 12-week medicine ball training program in addition to a stepwise periodized resistance training program with bat swings provided greater sport-specific training improvements in torso rotational and sequential hip-torso-arm rotational strength for high school baseball players.
David J Szymanski; Jessica M Szymanski; T Jason Bradford; Ryan L Schade; David D Pascoe
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Publication Detail:
Type:  Journal Article; Randomized Controlled Trial    
Journal Detail:
Title:  Journal of strength and conditioning research / National Strength & Conditioning Association     Volume:  21     ISSN:  1064-8011     ISO Abbreviation:  J Strength Cond Res     Publication Date:  2007 Aug 
Date Detail:
Created Date:  2007-08-09     Completed Date:  2007-11-08     Revised Date:  2008-11-01    
Medline Journal Info:
Nlm Unique ID:  9415084     Medline TA:  J Strength Cond Res     Country:  United States    
Other Details:
Languages:  eng     Pagination:  894-901     Citation Subset:  IM; S    
Department of Health and Exercise Science, Louisiana Tech University, Ruston, Louisiana 71272, USA.
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MeSH Terms
Analysis of Variance
Baseball / physiology*
Muscle Strength / physiology
Physical Education and Training / methods*
Sports Equipment*
Erratum In:
J Strength Cond Res. 2007 Nov;21(4):1002

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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