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Responses during exhaustive exercise at critical power determined from the 3-min all-out test.
MedLine Citation:
PMID:  23121405     Owner:  NLM     Status:  Publisher    
Abstract The purpose of the present study was to examine oxygen consumption rate ([Vdot][Formula: see text]), heart rate (HR), and ratings of perceived exertion (RPE) responses, as well as time to exhaustion (T(lim)) values during continuous rides at critical power (CP) determined from the 3-min all-out test. Eighteen participants (mean ± s: 23.6 ± 3.5 years; 72.7 ± 18.2 kg) performed an incremental cycle ergometer test to exhaustion to determine peak oxygen consumption rate ([Vdot][Formula: see text] peak) and HR peak. Critical power was determined from the 3-min all-out test. Metabolic responses ([Vdot][Formula: see text] and heart rate), RPE, and T(lim) were recorded during continuous rides to exhaustion at CP. Linear regression and t-tests were used to compare [Vdot][Formula: see text], heart rate, and RPE responses during the continuous rides to exhaustion. The T(lim) at CP was 12.5 ± 6.5 min. There were significant increases in [Vdot][Formula: see text], HR, and RPE during the continuous rides at CP and 15 of the 18 participants reached [Vdot][Formula: see text] peak at exhaustion. Therefore, the [Vdot][Formula: see text], heart rate, and RPE responses, as well as the T(lim) values in the present study suggested that CP determined from the 3-min all-out test overestimated the "true" CP and was within the severe exercise intensity domain.
Haley C Bergstrom; Terry J Housh; Jorge M Zuniga; Daniel A Traylor; Robert W Lewis; Clayton L Camic; Richard J Schmidt; Glen O Johnson
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-11-2
Journal Detail:
Title:  Journal of sports sciences     Volume:  -     ISSN:  1466-447X     ISO Abbreviation:  J Sports Sci     Publication Date:  2012 Nov 
Date Detail:
Created Date:  2012-11-5     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8405364     Medline TA:  J Sports Sci     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
a Department of Nutrition and Health Sciences , University of Nebraska-Lincoln , 110 Ruth Leverton Hall , Lincoln , 68583-0806 , United States.
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