Document Detail


Fast-start strategy increases the time spent above 95 %VO(2max) during severe-intensity intermittent running exercise.
MedLine Citation:
PMID:  23053127     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
This study aimed to use the intermittent critical velocity (ICV) model to individualize intermittent exercise and analyze whether a fast-start strategy could increase the time spent at or above 95 %VO(2max) (t95VO(2max)) during intermittent exercise. After an incremental test, seven active male subjects performed three intermittent exercise tests until exhaustion at 100, 110, and 120 % of the maximal aerobic velocity to determine ICV. On three occasions, the subjects performed an intermittent exercise test until exhaustion at 105 % (IE(105)) and 125 % (IE(125)) of ICV, and at a speed that was initially set at 125 %ICV but which then decreased to 105 %ICV (IE(125-105)). The intermittent exercise consisted of repeated 30-s runs alternated with 15-s passive rest intervals. There was no difference between the predicted and actual Tlim for IE(125) (300 ± 72 s and 284 ± 76 s) and IE(105) (1,438 ± 423 s and 1,439 ± 518 s), but for IE(125-105) the predicted Tlim underestimated the actual Tlim (888 ± 211 s and 1,051 ± 153 s, respectively). The t95VO(2max) during IE(125-105) (289 ± 150 s) was significantly higher than IE(125) (113 ± 40 s) and IE(105) (106 ± 71 s), but no significant differences were found between IE(125) and IE(105). It can be concluded that predicting Tlim from the ICV model was affected by the fast-start protocol during intermittent exercise. Furthermore, fast-start protocol was able to increase the time spent at or above 95 %VO(2max) during intermittent exercise above ICV despite a longer total exercise time at IE(105).
Authors:
Rafael Alves de Aguiar; Tiago Turnes; Rogério Santos de Oliveira Cruz; Fabrizio Caputo
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-10-2
Journal Detail:
Title:  European journal of applied physiology     Volume:  -     ISSN:  1439-6327     ISO Abbreviation:  Eur. J. Appl. Physiol.     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-10-11     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100954790     Medline TA:  Eur J Appl Physiol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Human Performance Research Group, Center for Health and Exercise Science, CEFID, UDESC, Rua Pascoal Simone, 358, Coqueiros, Florianopolis, SC, CEP 88080-350, Brazil.
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