The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.
The level of accuracy and agreement in measures of FEO2, FECO2 and V̇E between the cosmed K4b2 portable, respiratory gas analysis system and a metabolic cart
Abstract
This study aimed to assess the accuracy of the Cosmed K4b2 (Cosmed, Italy) portable metabolic system that measures FEO2, FECO2 and VE on a breath by breath basis. For gas concentration comparisons, expired air from 20 subjects performing treadmill running was collected in a 600 litre chain compensated Collins Tissot tank and analysed for FEO2 and FECO2 using a laboratory metabolic cart and the Cosmed K4 b2 metabolic system. For ventilation comparisons, serial steady state VE (STPD) values were measured on 10 subjects using the Cosmed K4b2 ventilation turbine and a Morgan ventilation monitor during a continuous treadmill running protocol at ascending speeds of 8, 11 and 14 km x h(-1). The Cosmed K4b2 FEO2 and FECO2 measures were significantly lower (P 0.05). When VE measures at the three running speeds were combined, the mean difference between instrument measures ranged between 3.5 - 4.0 l x min(-1) but the values were highly correlated (r= 0.982, P<0.01; SEM 3.03). Linear regression analysis revealed the following regression equations to predict metabolic cart values from Cosmed measures: FEO2 = 0.852+0.963 Cosmed (R2 = 0.940, P<0.00 1), FECO2 = 0.627+0.878 Cosmed (R2=0.856, P<0.001), VE = -2.50+0.984 Cosmed (R2 = 0.965. P < 0.001). The results indicated that the Cosmed K4b2 unit assessed here produced measures of FEO2, FECO2 and VE that had strong correlation to values obtained from a metabolic cart. However, linear regression analysis may further improve the accuracy of Co…
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The calorimeter model in question consistently exceeds well-validated laboratory systems under similar conditions by magnitudes ranging from 2% to 25%.
“The calorimeter model in question consistently exceeds well-validated laboratory systems under similar conditions by magnitudes ranging from 2% to 25% (22–28).”
From Real-world walking economy: can laboratory equations predict field energy expenditure? (2021) · cites this paper as [28]
The Douglas bag, mass spectrometer, and other laboratory-based metabolic system assessments of the validity of the Cosmed K4b2 unit reported positive, but consistent within-study bias ranging from 2% to 25% across the relevant measurement range.
“The Douglas bag, mass spectrometer, and other laboratory-based metabolic system assessments of the validity of the Cosmed K4b2 unit (22–28) we used reported positive, but consistent within-study bias ranging from 2% to 25% across the relevant measurement range.”
From Real-world walking economy: can laboratory equations predict field energy expenditure? (2021) · cites this paper as [28]
Accuracy metrics for individuals could misrepresent equation predictive accuracy because the measurement variability of the portable calorimeter would be present to an unknown extent.
“Equally important, accuracy metrics for individuals could misrepresent equation predictive accuracy because the measurement variability of the portable calorimeter (22–28, Fig. 3) would be present to an unknown extent.”
From Real-world walking economy: can laboratory equations predict field energy expenditure? (2021) · cites this paper as [28]
Citations
Cites
STATISTICAL METHODS FOR ASSESSING AGREEMENT BETWEEN TWO METHODS OF CLINICAL MEASUREMENT
Martin Bland, J., & Altman, D. (1986) · The Lancet · doi:10.1016/s0140-6736(86)90837-8 · Cited by 47,965
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Research works printed but not linked: 6
- Crandall, 1994, Evaluation of the Cosmed K2 portable telemetric oxygen uptake analyser, Medicine and Science in Sports and Exercise, 26, 108, 10.1249/00005768-199401000-00018 · DOI
- Denegar, 1993, Assessing reliability and precision of measurement: An introduction to Intraclass correlation and standard error of measurement, Journal of Sport Rehabilitation, 2, 35, 10.1123/jsr.2.1.35 · DOI
- Hausswirth, 1997, The Cosmed K4 telemetry system as an accurate device for oxygen uptake measurements during exercise, International Journal of Sports Medicine, 18, 449, 10.1055/s-2007-972662 · DOI
- Lothian, 1993, Validity and reliability of the Cosmed K2 to measure oxygen uptake, Canadian Journal of Applied Physiology, 18, 197, 10.1139/h93-016 · DOI
- Lucia, 1993, Validity and reliability of the Cosmed K2 instrument, International Journal of Sports Medicine, 14, 380, 10.1055/s-2007-1021196 · DOI
- Peel, 1993, Oxygen consumption using the K2 telemetry system and a metabolic cart, Medicine and Science in Sports and Exercise, 25, 396, 10.1249/00005768-199303000-00016 · DOI
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Real-world walking economy: can laboratory equations predict field energy expenditure?
Weyand, P. G., Ludlow, L. W., Nollkamper, J. J., & Buller, M. J. (2021) · Journal of Applied Physiology · doi:10.1152/japplphysiol.00121.2021 · Cited by 6
Metadata
- Authors
- Pinnington, H. C., Wong, P., Tay, J., Green, D., & Dawson, B.
- Venue
- Journal of Science and Medicine in Sport
- Publisher
- Elsevier BV
- Published
- 2001-09
- Volume
- 4
- Issue
- 3
- Pages
- 324-335
- ISSN
- 1440-2440
- Cited by
- 77
- References
- 1
- Language
- en
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