Document Detail


Effects of additional repeated sprint training during pre-season on performance, heart rate variability and stress symptoms in futsal players: a randomized controlled trial.
MedLine Citation:
PMID:  24662230     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
The aim of this study was to investigate whether supplementing regular pre-season futsal training with weekly sessions of repeated sprints (RS) training would have positive effects on repeated sprint ability (RSA) and field test performance. Thirteen players from a professional futsal team (22.6 ± 6.7 years, 72.8 ± 8.7 kg, 173.2 ± 6.2 cm) were divided randomly into two groups (AddT: n=6 and NormT: n=7). Both groups performed a RSA test, Yo-Yo intermittent recovery test level 1 (YoYo IR1), squat (SJ) and countermovement jumps (CMJ), body composition and heart rate variability (HRV) measures at rest before and after 4 weeks of pre-season training. Athletes weekly stress symptoms were recorded by psychometric responses using the DALDA questionnaire and subjective ratings of well-being scale (SRWB), respectively. The daily training load (arbitrary units, a.u.) was assessed using the session of rating perceived exertion (session-RPE) method. Following the pre-season training, there were no significant changes for body composition, SJ, CMJ and RSAbest. The YoYo IR1, RSAmean, RSAworst and RSAdecreament were significantly improved for both groups (P<0.05). The HRV parameters improved significantly within both groups (P<0.05) except for high frequency (HF, absolute and normalised units, n.u.), low frequency (LF) (n.u.) and the LF/HF ratio. A moderate effect size for the AddT group was observed for resting heart rate and several HRV measures). Training load and psychometric responses were similar between both groups. Additional RS training resulted in slightly greater positive changes for vagal-related HRV with similar improvements in performance and training stress during the pre-season training in futsal players.
Authors:
Lúcio Flávio Soares-Caldeira; Eberton Alves de Souza; Victor Hugo de Freitas; Solange Marta Franzoi de Moraes; Anthony Scott Leicht; Fábio Yuzo Nakamura
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-3-20
Journal Detail:
Title:  Journal of strength and conditioning research / National Strength & Conditioning Association     Volume:  -     ISSN:  1533-4287     ISO Abbreviation:  J Strength Cond Res     Publication Date:  2014 Mar 
Date Detail:
Created Date:  2014-3-25     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:  -    
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