Prediction of maximal VO2 from a submaximal stairmaster test in young women

Full text for this resource is not available from the Research Repository.

Roy, Jane L. P, Smith, Joe F, Bishop, Phillip A, Hallinan, Christopher J, Wang, Minqi and Hunter, Gary R (2004) Prediction of maximal VO2 from a submaximal stairmaster test in young women. The Journal of Strength and Conditioning Research, 18 (1). pp. 92-96. ISSN 1064-8011

Abstract

The StairMaster 4000 PT is a popular step ergometer which provides a submaximal test protocol (SM Predicted Vo2max) for the prediction of Vo2max (ml-kg-1min-1). The purpose of this study was to evaluate the SM Predicted Vo2max protocol by comparing it to results from a Vo2max treadmill test in 20 young healthy women aged 20-25 years. Subjects were 10 step-trained (ST) women who had performed aerobic activities and exercised on a step ergometer for 20-30 minutes at least 3 times per week for the past 3 months, and 10 non-step-trained (NST) women who had performed aerobic activities no more than twice a week during the past 3 months and had no previous experience on a step ergometer. The SM Predicted Vo2max protocol used 2 steady state heart rates between approximately 115-150 b-min-1 to estimate Vo2max. The Bruce maximal treadmill protocol (Actual Vo2max) was used to measure Vo2max by open circuit spirometry. Each subject performed both tests within a 7-day period. The means and standard deviations for the Actual Vo2max tests were 39.8 +/- 6.1 ml-kg-1min-1 for the ST group, 37.6 +/- 6.3 ml-kg-1min-1 for the NST group, and 38.7 +/- 6.2 ml-kg-Lmin-1 for the Total group (N = 20); and for the SM Predicted Vo2max tests, means and standard deviations were 40.78 +/- 14.0 ml-kg-1-min-1, 30.9 +/- 4.8 ml-kg-1min-1 and 35.9 +/- 11.4 ml-kg-1.min-1. There was no significant difference (p > 0.05) between the means of the Actual Vo2max and SM Predicted Vo2max test for the Total group (N = 20) or the ST group (n = 10), but a significant difference (p < 0.05) was shown for the NST group. The coefficient of determination (R2) and standard error of estimate (SEE) for the SM Predicted Vo2max and Actual Vo2max tests were R2 = 0.18, SEE = 5.72 ml-kg-1-min-1 for the Total group; R2 = 0.00, SEE = 6.68 ml-kg-1.min-1 for the NST group; and R2 = 0.33, SEE = 5.32 ml-kg-1.min-1 for ST group. In conclusion, the SM Predicted Vo2max test has acceptable accuracy for the ST group, but significantly underpredicted the NST group by almost 7 ml; and, as demonstrated by the high SEEs, it has a low level of precision for both ST and NST subjects.

Item type Article
URI https://vuir.vu.edu.au/id/eprint/1758
Subjects Historical > RFCD Classification > 320000 Medical and Health Sciences
Historical > Faculty/School/Research Centre/Department > School of Sport and Exercise Science
Keywords fitness testing, cardiorespiratory endurance, step ergometer
Citations in Scopus 10 - View on Scopus
Download/View statistics View download statistics for this item

Search Google Scholar

Repository staff login