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.
The purpose of this study was to develop an equation to predict V̇O2max 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 V̇O2max: 43.9 ± 7.2 ml·kg-1·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 V̇O2max 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 V̇O2max 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·kg-1·min-1, p < 0.05): V̇O2max = 73.676 + 7.383(gender) - 0.317(weight) + 0.003957(age·cadence) - 0.006452(age·heart rate at stage 2). The correlation coefficient between the predicted and measured V̇O2max values was r = 0.86. Dependent t-tests resulted in no significant differences (p > 0.05) between predicted (43.8 ml·kg-1·min-1) and measured (43.9 ml·kg-1·min-1) V̇O2max 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 V̇O2max in non-laboratory-based settings.
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|Item Type:||Journal Article|
|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|
|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:||21 Dec 2016 02:20|
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