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MedLine Citation:
PMID:  24172723     Owner:  NLM     Status:  Publisher    
The purpose of the present study was to compare the cardiorespiratory responses of young women to exercise at the first ventilatory threshold (VT1), the second ventilatory threshold (VT2) and at maximum effort (MAX) between maximal incremental tests performed using water aerobic exercises and a treadmill on land (TL). Twenty women (24.0 ± 2.5 years; 163.3 ± 6.7 cm; 60.0 ± 6.7 kg) underwent four maximal tests in randomized order, with a 48h interval between tests. Three tests involved performing water aerobic exercises (stationary running, frontal kick and cross country skiing) and one TL. Oxygen uptake (VO2), ventilation (VE) and heart rate (HR) were measured throughout the tests, and their values at the VT1, VT2 and MAX intensities were determined by three independent, experienced physiologists. Repeated measures ANOVA with Bonferroni post hoc tests were used for comparisons between tests (α=0.05). HR was significantly higher in the TL condition compared to the water aerobic exercises at the VT1 (p=0.001), VT2 (p<0.001) and MAX (p<0.001) intensities. VO2 and VE had similar values across the four protocols at the VT1 intensity, but significantly higher values were observed with TL (VO2: p<0.001; VE: p<0.001) at the VT2 intensity. At the MAX intensity, VO2 was significantly higher with TL compared to the three water aerobic exercises (p<0.001), while no significant differences in VE between the four protocols were found. These results suggest that the prescription of water aerobics classes should be based on specific maximal tests for water aerobic exercises. Training intensities could be overestimated if they were based on maximal tests on dry land.
Cristine L Alberton; Stephanie S Pinto; Amanda H Antunes; Eduardo L Cadore; Paula Finatto; Marcus P Tartaruga; Luiz Fernando M Kruel
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-10-29
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:  2013 Oct 
Date Detail:
Created Date:  2013-10-31     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:  -    
1Physical Education School, Federal University of Pelotas, RS, Brazil. 2Physical Education School, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil. 3Physical Education School, Midwest State University of Parana, Guarapuava, PR, Brazil.
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