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The validity of the Moxus Modular metabolic system during incremental exercise tests: impacts on detection of small changes in oxygen consumption
Abstract
Purpose We investigated the accuracy of the Moxus Modular Metabolic System (MOXUS) against the Douglas Bag Method (DBM) during high-intensity exercise, and whether the two methods agreed when detecting small changes in [Formula: see text] between two consecutive workloads ([Formula: see text]). Methods Twelve trained male runners performed two maximal incremental running tests while gas exchange was analyzed simultaneously by the two systems using a serial setup for four consecutive intervals of 30 s on each test. Comparisons between methods were performed for [Formula: see text], [Formula: see text], fractions of expired O2 (FeO2) and CO2 (FeCO2) and [Formula: see text]. Results The MOXUS produced significant higher (mean ± SD, n = 54) readings for [Formula: see text] (80 ± 200 mL min(-1), p = 0.005) and [Formula: see text] (2.9 ± 4.2 L min(-1), p Discussion Although it was tested during high-intensity exercise and short sampling intervals, the MOXUS performed within the acceptable range of accuracy reported for automated analyzers. Most of the differences between equipments were due to differences in [Formula: see text]. Detecting small changes in [Formula: see text] during an incremental test with small changes in workload, however, might be beyond the equipment's accuracy.
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“Researchers collected respiratory gas measures using a MOXUS metabolic cart, previously validated for V O 2 measurements (4), (AEI, Pittsburgh, PA, USA)”
From Comparison of a Continuous and Discontinuous GXT on VO2 in Resistance-Trained and Endurance-Trained Males (2022) · cites this paper as [4]
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Cited by
(2022) · International Journal of Exercise Science · doi:10.70252/nhay2400 · Cited by 3
Metadata
- Authors
- Beltrami, F. G., Froyd, C., Mamen, A., & Noakes, T. D.
- Venue
- European Journal of Applied Physiology
- Published
- 2014-01-30
- Volume
- 114
- Issue
- 5
- Pages
- 941-950
- ISSN
- 1439-6319
- 1439-6327
- Cited by
- 5
- References
- 2
- Language
- en
- Licence
- www.springer.com/tdm (tdm)
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