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- Title
Validity of the revised Ekblom Bak cycle ergometer test in adults.
- Authors
Björkman, Frida; Ekblom-Bak, Elin; Ekblom, Örjan; Ekblom, Björn
- Abstract
<bold>Purpose: </bold>To further develop the Ekblom Bak-test prediction equation for estimation of VO2max from submaximal cycle ergometry. <bold>Methods: </bold>The model group (117 men and 100 women, aged 48.3 ± 15.7 and 46.1 ± 16.8 years, VO2max 46.6 ± 11.1 and 40.4 ± 9.6 mL kg(-1) min(-1), respectively) and the cross-validation group (60 men and 55 women, aged 40.6 ± 17.1 and 41.6 ± 16.7 years, VO2max 49.0 ± 12.1 and 43.2 ± 8.9 mL min(-1) kg(-1), respectively) performed 4 min of cycling on a standard work rate (30 W) directly followed by 4 min on a higher work rate. Heart rate (HR) at each work rate was recorded. Thereafter, participants completed a graded maximal treadmill test for direct measurement of oxygen uptake. The new prediction equation was cross-validated and accuracy compared with the original Ekblom Bak equation as well as by the Åstrand test method. <bold>Results: </bold>The final sex-specific regression models included age, change in HR per-unit change in power (ΔHR/ΔPO), the difference in work rates (ΔPO), and HR at standard work rate as independent variables. The adjusted R (2) for the final models were 0.86 in men and 0.83 in women. The coefficient of variation (CV) was 8.7 % and SEE 0.28 L min(-1). The corresponding CV and SEE values for the EB-test2012 and the Åstrand tests were 10.9 and 18.1 % and 0.35 and 0.48 L min(-1), respectively. <bold>Conclusion: </bold>The new EB-test prediction equation provides an easy administered and valid estimation of VO2max for a wide variety of ages (20-86 years) and fitness levels (19-76 mL kg(-1) min(-1)).
- Subjects
ERGOMETRY; PHYSIOLOGY of men; PHYSIOLOGY of women; PHYSIOLOGICAL effects of oxygen; PHYSIOLOGICAL transport of oxygen
- Publication
European Journal of Applied Physiology, 2016, Vol 116, Issue 9, p1627
- ISSN
1439-6319
- Publication type
journal article
- DOI
10.1007/s00421-016-3412-0