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Different methods for monitoring intensity during water-based aerobic exercises.
MedLine Citation:
PMID:  21503697     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
The aim of this study was to compare different measurement techniques (indirect calorimetry, IC; heart rate monitoring, HR; an activity monitoring system, AH; rates of perceived exertion, RPE) to estimate physical activity intensity (light, moderate, vigorous) during water-based aerobic exercises (WE). Twelve healthy young women performed five common WE of 10-min duration at three frequencies in an indoor swimming pool. Data recorded from the 5th to 9th minute of exercise were averaged to obtain mean [Formula: see text] (IC), HR and AH values; RPE was recorded at the end of each WE. Oxygen uptake was also estimated from HR data using three different [Formula: see text] versus HR regression equation models. Significant correlations (p < 0.001) were found for the indirect methods that used HR, RPE and AH data regressed as a function of [Formula: see text] (IC); the highest correlations were found between the measured values of [Formula: see text] (IC) and those estimated from the three [Formula: see text] versus HR equations (R > 0.7 in all cases). An ANOVA test showed no significant differences between all predicted and measured [Formula: see text] values; however, when the Bland & Altman analysis was considered, AH data showed the larger explained variances (95% CI) and the larger standard errors. These data indicate that the most accurate way to estimate physical activity intensity during WE is based on HR measurements.
Authors:
C Raffaelli; C Galvani; M Lanza; Paola Zamparo
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-4-19
Journal Detail:
Title:  European journal of applied physiology     Volume:  -     ISSN:  1439-6327     ISO Abbreviation:  -     Publication Date:  2011 Apr 
Date Detail:
Created Date:  2011-4-19     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:
Department of Neurological, Neuropsychological, Morphological and Movement Sciences, Faculty of Exercise and Sport Sciences, University of Verona, via F. Casorati 43, 37131, Verona, Italy.
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