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An appraisal of whole-room indirect calorimeters and a metabolic cart for measuring resting and active metabolic rates.

Abstract：

:Whole-room indirect calorimeters (WRICs) have traditionally been used for real-time resting metabolic rate (RMR) measurements, while metabolic rate (MR) during short-interval exercises has commonly been measured by metabolic carts (MCs). This study aims to investigate the feasibility of incorporating short-interval exercises into WRIC study protocols by comparing the performance of WRICs and an MC. We assessed the 40-min RMR of 15 subjects with 2-day repeats and the 10-15 min activity MR (AMR) of 14 subjects at three intensities, using a large WRIC, a small WRIC, and an MC. We evaluated the biases between the instruments and quantified sources of variation using variance component analysis. All three instruments showed good agreement for both RMR (maximum bias = 0.07 kcal/min) and AMR assessment (maximum bias = 0.53 kcal/min). Moreover, the majority of the variability was between-subject and between-intensity variation, whereas the types of instrument contributed only a small amount to total variation in RMR (2%) and AMR (0.2%) data. In Conclusion, the good reproducibility among the instruments indicates that they may be used interchangeably in well-designed studies. Overall, WRICs can serve as an accurate and versatile means of assessing MR, capable of integrating RMR and short-interval AMR assessments into a single protocol.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Chen S,Scott C,Pearce JV,Farrar JS,Evans RK,Celi FS

doi

10.1038/s41598-020-71001-1

subject

Has Abstract

pub_date

2020-08-31 00:00:00

pages

14343

issue

1

issn

2045-2322

pii

10.1038/s41598-020-71001-1

journal_volume

10

pub_type

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