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01-12-2018 | Original Article

Peak oxygen uptake estimation from a moderate 500-m treadmill walk in older women with cardiovascular disease

Authors: Gianni Mazzoni, Giorgio Chiaranda, Jonathan Myers, Biagio Sassone, Giovanni Pasanisi, Simona Mandini, Stefano Volpato, Francesco Conconi, Giovanni Grazzi

Published in: Sport Sciences for Health | Issue 3/2018

Abstract

Background and objective

Low levels of cardiorespiratory fitness are associated with a high risk of cardiovascular disease (CVD) and all-cause mortality in women. The aim of this study was to determine the validity of a 500-m moderate treadmill-walking test for estimating peak oxygen uptake (VO₂peak) in older women with CVD.

Methods

Fifty-three women with stable CVD (age 70.4 ± 8.2 years) underwent exercise testing during an outpatient cardiac rehabilitation/secondary prevention program. Each patient completed a maximal cardiopulmonary exercise test, and a moderate and self-paced (11–13/20 on the Borg scale) 500-m treadmill-walking test. Treadmill walk time, age, weight, height, and heart rate during the test were entered into prediction equations previously validated for VO₂peak estimation in male patients.

Results

Measured and estimated VO₂peak values were not different (20.8 ± 4.3 vs 21.3 ± 4.6 mL/kg/min, P = 0.12). The comparison between measured and estimated VO₂peak values yielded a correlation of R = 0.92 (SEE = 1.3 mL/kg/min, P < 0.0001), with the slope and the intercept that coincided with the line of identity (Passing and Bablok analysis, P = 0.65). Residuals were normally distributed with a mean value of − 0.5 mL/kg/min. Examination of the Bland–Altman analysis does not show systematic or proportional error.

Conclusion

A moderate and self-regulated 500-m treadmill-walking test is a valid tool for VO₂peak estimation in older women with CVD. These findings may have practical implications in the context of transitioning from clinically based programs to fitness facilities or self-guided exercise programs in older women with stable cardiovascular disease.

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Title: Peak oxygen uptake estimation from a moderate 500-m treadmill walk in older women with cardiovascular disease
Authors: Gianni Mazzoni
Giorgio Chiaranda
Jonathan Myers
Biagio Sassone
Giovanni Pasanisi
Simona Mandini
Stefano Volpato
Francesco Conconi
Giovanni Grazzi
Publication date: 01-12-2018
Publisher: Springer Milan
Published in: Sport Sciences for Health / Issue 3/2018
Print ISSN: 1824-7490
Electronic ISSN: 1825-1234
DOI: https://doi.org/10.1007/s11332-018-0483-9

At a glance: The STEP trials

Springer Medicine

Peak oxygen uptake estimation from a moderate 500-m treadmill walk in older women with cardiovascular disease

Abstract

Background and objective

Methods

Results

Conclusion

At a glance: The STEP trials

Springer Medicine

Abstract

Background and objective

Methods

Results

Conclusion

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