Document Detail


Effect of match importance on salivary cortisol and immunoglobulin A responses in elite young volleyball players.
MedLine Citation:
PMID:  22395271     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
The aim of the present study was to investigate the acute effect of (a) a drop jump protocol with 1 set/5 repetitions and (b) a drop jump protocol with 2 sets/5 repetitions on countermovement jump height performance in volleyball players at recovery times of (a) 2 min, (b) 6 min, and (c) 12 min. Subjects were ten male Division I college volleyball players. They were instructed to perform a pre-test of three countermovement jumps (CMJs) and then randomly assigned to perform (a) a drop jump protocol with 1 set/5 repetitions and (b) a drop jump protocol with 2 sets/5 repetitions. After the drop jump, three CMJs were completed in 2, 6, and 12 minutes. A two-way repeated measures ANOVA was used to examine the differences between training volumes and recovery times in CMJ height (HCMJ) and maximum ground reaction force (GRF). Both drop jump training volumes significantly increased the HCMJ. The HCMJ at post-2min was greater than those at the pre-test (p=.008), post-6min (p=.004) and post-12min (p=.002). In addition, the HCMJ at post-6min was significantly greater than that at post-12min (p=.018). Drop jumps in lower volume (e.g. within ten repetitions) and short recovery time (e.g. within two minutes) can produce a positive acute effect on countermovement jump performance.
Authors:
Alexandre Moreira; Camila G Freitas; Fábio Yuzo Nakamura; Gustavo Drago; Murilo Drago; Marcelo S Aoki
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-3-05
Journal Detail:
Title:  Journal of strength and conditioning research / National Strength & Conditioning Association     Volume:  -     ISSN:  1533-4287     ISO Abbreviation:  -     Publication Date:  2012 Mar 
Date Detail:
Created Date:  2012-3-7     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9415084     Medline TA:  J Strength Cond Res     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
1 Department of Sport, School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil; 2 Department of Physical Education, State University of Londrina, Paraná, Brazil.; 3 Integrated Support Center for Athletes - Pinheiros Sport Club, Brazil; 4School of Arts, Sciences and Humanities, University of Sao Paulo, Sao Paulo, Brazil.
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