Design and Verification of a Human Energy Metabolism Detection System Based on Breath-by-Breath Method.
10.12455/j.issn.1671-7104.240546
- Author:
Chendong LI
1
;
Wei FANG
2
;
Youcai WANG
2
;
Yanyan CHEN
2
;
Wei CAO
1
;
Jun XU
3
;
Yuyang WANG
3
;
Fei YANG
1
;
Zijun HE
2
;
Yining SUN
2
Author Information
1. Anhui Medical University, Hefei,
2. Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei,
3. The First Affiliated Hospital of Anhui Medical University, Hefei,
- Publication Type:Journal Article
- Keywords:
breath-by-breath method;
energy metabolism;
indirect calorimetry;
nutrition assessment
- MeSH:
Humans;
Energy Metabolism;
Breath Tests/instrumentation*;
Calorimetry, Indirect/instrumentation*;
Equipment Design
- From:
Chinese Journal of Medical Instrumentation
2025;49(2):197-203
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVE:To accurately measure human energy metabolism with high temporal resolution, a respiratory gas analysis system was designed using a breath-by-breath approach.
METHODS:Firstly, indirect calorimetry was employed in respiratory gas analysis to measure the respiratory flow and concentration signals in real-time. Secondly, oxygen consumption QO2 and carbon dioxide production QCO2 were calculated through respiratory characteristic alignment and respiratory signal segmentation. Finally, metabolic indexes were calculated according to the Weir formula. Furthermore, a controlled trial was formulated for validation comparisons with the MGC ULTIMA SYSTEM PFX CARDIO2.
RESULTS:The results indicate that the data points of metabolic indexes measured by this system all fall within the confidence interval when compared with those of the MGC.
CONCLUSION:The system has high consistency with the MGC measurement results. Thus, the system can accurately measure metabolism in real-time and provide data support for clinical nutrition assessment and therapy.
