Validity of the Actiheart step test for the estimation of maximum oxygen consumption in endurance athletes and healthy controls

Details

Ressource 1Download: heydenreich actiheart validation.pdf (900.72 [Ko])
State: Public
Version: Final published version
License: CC BY 4.0
Serval ID
serval:BIB_A40CD2797772
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Validity of the Actiheart step test for the estimation of maximum oxygen consumption in endurance athletes and healthy controls
Journal
Current Issues in Sport Science
Author(s)
Heydenreich J., Schutz Y., Kayser B., Melzer K.
ISSN
2414-6641 (Online)
Publication state
Published
Issued date
12/03/2019
Volume
4
Pages
NA
Language
english
Abstract
Submaximal step tests are often used for estimation of maximum oxygen consumption (VO2max) in humans. The validity of the Actiheart step test for VO2max estimation was not fully studied yet. There- fore, purpose of the study was to estimate VO2max using the Actiheart step test and to compare the data with measured VO2max in endurance trained athletes (ATH) and healthy non-athletes (CON). 68 ATH (54% men, 28.0±5.4 yrs, 20.9±1.7 kg∙m-2) and 63 CON (46% men, 27.6±5.1 yrs, 22.1±1.7 kg∙m-2) performed the Actiheart step test and a spiroergometry for assessment of VO2max. In addition, rest- ing metabolic rate (RMR; indirect calorimetry), maximum heart rate (HRmax; heart rate monitoring system during spiroergometry), and sleeping heart rate (SHR; Actiheart 6-day long term measure- ment) were determined. Validity of two different Actiheart software entry modes was assessed: (1) AHraw (estimated RMR [Schofield] and HRmax [Tanaka], SHR = 70 bpm) and (2) AHcomplete (mea- sured RMR, HRmax, and SHR). Validity was investigated using linear regression (R2 and standard error of the estimate (SEE)) and repeated-measures ANOVA with a Bonferroni post-hoc correction. The level of significance was set to α=0.05.
VO2max estimated by AHraw was significant related to measured VO2max in women CON (R2=0.22; p<0.05), whereas when VO2max was estimated by AHcomplete the relation was significant in women ATH and CON, and in men CON (R2=0.17-0.24; p<0.05). AHraw significantly underestimated VO2max in the total sample by 8% (51.4±10.2 vs. 55.9±7.6 ml∙kg-1∙min-1; p<0.0001), whereas no significant difference between AHcomplete and the criterion method was found (57.0±11.1 vs. 55.9±7.6 ml∙ kg-1∙min-1; p=0.26).
The Actiheart step test is an acceptable tool for the estimation of VO2max if an error within 8% can be tolerated. However, accuracy of the VO2max prediction is much improved when entering measured variables, such as RMR, SHR, and HRmax, into the software.
Keywords
Maximum oxygen consumption, athletes, cardiorespiratory fitness, exercise testing, metabolic equivalent
Create date
18/03/2019 9:14
Last modification date
20/08/2019 15:09
Usage data