Development of a submaximal test to predict elliptical cross-trainer V̇O2MAX

Dalleck, Lance C., Kravitz, Len, & Robergs, Robert A. (2006) Development of a submaximal test to predict elliptical cross-trainer V̇O2MAX. Journal of Strength and Conditioning Research, 20(2), pp. 278-283.

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Abstract

The purpose of this study was to develop an equation to predict [latin capital V with dot above]O2max from a submaximal elliptical cross-trainer test. Fifty-four apparently healthy subjects (25 men and 29 women, mean +/- SD age: 29.5 +/- 7.1 years, height: 173.3 +/- 12.6 cm, weight: 72.3 +/- 7.9 kg, percent body fat: 17.3 +/- 5.0%, and elliptical cross-trainer [latin capital V with dot above]O2max: 43.9 +/- 7.2 ml[middle dot]kg-1[middle dot]min-1) participated in the study and were randomly assigned to an original sample group (n = 40) and a cross-validation group (n = 14). Each subject completed an elliptical cross-trainer submaximal (3 5-minute submaximal stages) and a [latin capital V with dot above]O2max test on the same day, with a 15-minute rest period in between. Stepwise multiple regression analyses were used to develop an equation for estimating elliptical cross-trainer [latin capital V with dot above]O2max from the data of the original sample group. The accuracy of the equation was tested by using data from the cross-validation group. Because there was no shrinkage in R2 between the original sample group and the cross-validation group, data were combined in the final prediction equation (R2 = 0.732, standard error of the estimate = 3.91 ml[middle dot]kg-1[middle dot]min-1, p < 0.05): [latin capital V with dot above]O2max = 73.676 + 7.383(gender) - 0.317(weight) + 0.003957(age[middle dot]cadence) - 0.006452(age[middle dot]heart rate at stage 2). The correlation coefficient between the predicted and measured [latin capital V with dot above]O2max values was r = 0.86. Dependent t-tests resulted in no significant differences (p > 0.05) between predicted (43.8 ml[middle dot]kg-1[middle dot]min-1) and measured (43.9 ml[middle dot]kg-1[middle dot]min-1) [latin capital V with dot above]O2max measurements. Results indicate that the protocol and equation developed in the current study can be used by exercise professionals to provide acceptably accurate estimates of [latin capital V with dot above]O2max in non-laboratory-based settings.

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ID Code: 96840
Item Type: Journal Article
Refereed: Yes
Keywords: adult; article; biological model; clinical trial; controlled clinical trial; controlled study; exercise test; female; heart rate; human; instrumentation; male; oxygen consumption; physiology; randomized controlled trial; regression analysis, Adult; Exercise Test; Female; Heart Rate; Humans; Male; Models, Biological; Oxygen Consumption; Regression Analysis
DOI: 2016003865
ISSN: 1533-4287
Divisions: Current > QUT Faculties and Divisions > Faculty of Health
Current > Schools > School of Exercise & Nutrition Sciences
Deposited On: 04 Aug 2016 01:41
Last Modified: 04 Aug 2016 23:30

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