Validation of Aerosport KB1-C portable metabolic system

George A. King, J. E. McLaughlin, E. T. Howley, D. R. Bassett, Barbara Ainsworth

Research output: Contribution to journalArticle

51 Scopus citations

Abstract

The purpose of this study was to test the validity of the Aerosport KB1-C portable metabolic measurement system against the criterion Douglas bag method. During cycle ergometry, simultaneous measurements of minute ventilation (V̇(E)), oxygen consumption (V̇CO2), and carbon dioxide production (V̇CO2) were made at rest and at power outputs of 50, 100, 150, 200, and 250 W. No significant differences (P > 0.05) were observed for V̇(E), V̇O2, and V̇CO2, between the KB1-C and Douglas bag at 100, 150, and 250 W, while the KB1-C was significantly different (P < 0.05) from Douglas bag values at rest, 50, and 200W. R values were found to be significantly different (P < 0.05) at 100, 150, and 200 W, while no significant differences were observed at rest, 50, and 250 W. The fractional concentrations of oxygen (F(E)O2) and carbon dioxide (F(E)C02) were not significantly different at 50, 100, 200, and 250 W while values at rest and 150W were significantly different (P < 0.05). These findings show that the Aerosport KB1-C portable metabolic system is acceptable for measuring oxygen uptake in the range of 1.5 and 3.5 L.min-1, using the medium flow pneumotach setting. At lower intensities, the low-flow pneumotach setting provides acceptable results.

Original languageEnglish (US)
Pages (from-to)304-308
Number of pages5
JournalInternational Journal of Sports Medicine
Volume20
Issue number5
DOIs
Publication statusPublished - 1999
Externally publishedYes

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Keywords

  • Exercise
  • Indirect calorimetry
  • Metabolism
  • Oxygen consumption
  • Portable
  • Validation

ASJC Scopus subject areas

  • Public Health, Environmental and Occupational Health
  • Orthopedics and Sports Medicine
  • Physical Therapy, Sports Therapy and Rehabilitation

Cite this

King, G. A., McLaughlin, J. E., Howley, E. T., Bassett, D. R., & Ainsworth, B. (1999). Validation of Aerosport KB1-C portable metabolic system. International Journal of Sports Medicine, 20(5), 304-308. https://doi.org/10.1055/s-2007-971135