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Criterion validity of the Ekblom-Bak and the Åstrand submaximal test in an elderly population.
Swedish School of Sport and Health Sciences, GIH, Department of Sport and Health Sciences, Åstrand Laboratory of Work Physiology.ORCID iD: 0000-0002-0958-0094
Swedish School of Sport and Health Sciences, GIH, Department of Sport and Health Sciences, Åstrand Laboratory of Work Physiology, Björn Ekblom's research group.ORCID iD: 0000-0001-6058-4982 
Swedish School of Sport and Health Sciences, GIH, Department of Sport and Health Sciences, Åstrand Laboratory of Work Physiology, Björn Ekblom's research group.ORCID iD: 0000-0002-3901-7833
Swedish School of Sport and Health Sciences, GIH, Department of Sport and Health Sciences, Laboratory for Biomechanics and Motor Control. Karolinska institutet.ORCID iD: 0000-0001-9040-2158
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2020 (English)In: European Journal of Applied Physiology, ISSN 1439-6319, E-ISSN 1439-6327, Vol. 120, no 2, p. 307-316Article in journal (Refereed) Published
Abstract [en]

PURPOSE: The aim of this study was to validate the submaximal Ekblom-Bak test (EB-test) and the Åstrand test (Å-test) for an elderly population.

METHODS: Participants (n = 104), aged 65-75 years, completed a submaximal aerobic test on a cycle ergometer followed by an individually adjusted indirect calorimetry VO2max test on a treadmill. The HR from the submaximal test was used to estimate VO2max using both the EB-test and Å-test equations.

RESULTS: The correlation between measured and estimated VO2max using the EB method and Å method in women was r = 0.64 and r = 0.58, respectively and in men r = 0.44 and r = 0.44, respectively. In women, the mean difference between estimated and measured VO2max was - 0.02 L min-1 (95% CI - 0.08 to 0.04) for the EB method and - 0.12 L min-1 (95% CI - 0.22 to - 0.02) for the Å method. Corresponding values for men were 0.05 L min-1 (95% CI - 0.04 to 0.14) and - 0.28 L min-1 (95% CI - 0.42 to - 0.14), respectively. However, the EB method was found to overestimate VO2max in men with low fitness and the Å method was found to underestimate VO2max in both women and men. For women, the coefficient of variance was 11.1%, when using the EB method and 19.8% when using the Å method. Corresponding values for men were 11.6% and 18.9%, respectively.

CONCLUSION: The submaximal EB-test is valid for estimating VO2max in elderly women, but not in all elderly men. The Å-test is not valid for estimating VO2max in the elderly.

Place, publisher, year, edition, pages
Springer, 2020. Vol. 120, no 2, p. 307-316
Keywords [en]
Cardiorespiratory fitness, Elderly, Oxygen uptake, Public health, Submaximal test, Validity
National Category
Sport and Fitness Sciences
Research subject
Medicine/Technology; Medicine/Technology
Identifiers
URN: urn:nbn:se:gih:diva-5960DOI: 10.1007/s00421-019-04275-7PubMedID: 31820103OAI: oai:DiVA.org:gih-5960DiVA, id: diva2:1380263
Available from: 2019-12-18 Created: 2019-12-18 Last updated: 2020-02-24

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Väisänen, DanielEkblom, ÖrjanEkblom Bak, ElinAndersson, EvaNilsson, JonnaEkblom, Maria

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Åstrand Laboratory of Work PhysiologyBjörn Ekblom's research groupLaboratory for Biomechanics and Motor Control
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