Document Detail

Do the speeds defined by the American College of Sports Medicine metabolic equation for running produce target energy expenditures during isocaloric exercise bouts?
MedLine Citation:
PMID:  22170015     Owner:  NLM     Status:  Publisher    
The accuracy of the American College of Sports Medicine (ACSM) equations for producing predicted values of heart rate reserve (HRR) and oxygen uptake reserve [Formula: see text] and consequently, target energy expenditure (EE) during exercise are yet to be established. This study investigated whether speeds defined by the ACSM metabolic equation for running correctly estimate the EEs during isocaloric exercise bouts. Twenty-eight men performed a ramp-incremental maximal exercise test to determine HR(max) and [Formula: see text] Two continuous exercise bouts at 60 and 80% [Formula: see text] and target EE of 400 kcal were then performed. In the 60% [Formula: see text] exercise the observed [Formula: see text] and EE were lower than predicted only during the first time quartile of the bout (t = 6.5, p < 0.001), whereas at 80% [Formula: see text] it was lower during the first (t = 15.3, p < 0.001), second (t = 5.4, p < 0.001) and third (t = 3.1, p = 0.025) quartiles. The observed HR was lower than predicted in the first time quartile of the 60% [Formula: see text] (t = 5.6, p < 0.001) and 80% [Formula: see text] bouts (t = 10.7, p < 0.001), whereas no significant differences occurred for any other time quartiles (p ≥ 0.23). In conclusion, the running speed defined by the ACSM metabolic equation overestimated [Formula: see text] and EE within exercise performed at 60 and 80% [Formula: see text] especially in higher intensities.
Felipe A Cunha; Robert P G Catalão; Adrian W Midgley; Jonas Gurgel; Flávia Porto; Paulo T V Farinatti
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-12-15
Journal Detail:
Title:  European journal of applied physiology     Volume:  -     ISSN:  1439-6327     ISO Abbreviation:  -     Publication Date:  2011 Dec 
Date Detail:
Created Date:  2011-12-15     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:  -    
Medical Sciences Graduate Program, Faculty of Medical Sciences, State University of Rio de Janeiro, Rio de Janeiro, Brazil.
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