ArticleNutrition in clinical practice : official publication of the American Society for Parenteral and Enteral Nutrition2018
Determining the Accuracy and Reliability of Indirect Calorimeters Utilizing the Methanol Combustion Technique.
Article in Nutrition in clinical practice : official publication of the American Society for Parenteral and Enteral Nutrition, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.
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Who cites it
22 citing papers in PubMed.
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- Technological and Biological Reliability, and Validity of Five Different CPET Systems During Simulated and Human Exercise.Scandinavian journal of medicine & science in sports · 2026Article
- Development of a computer-controlled closed-circuit respiratory calorimetry system to determine dietary energy utilization in broilers.Journal of animal science · 2025Article
- Whole-body volume of oxygen consumption while walking: Agreement between measured and estimated values.European journal of sport science · 2024Article
- Examining and Comparing the Energy Expenditure of Two Modes of a Virtual Reality Fitness Game (Supernatural): Indirect Calorimetry Study.JMIR serious games · 2024Article
- Resting energy metabolism and sweet taste preference during the menstrual cycle in healthy women.The British journal of nutrition · 2024Article
- Validation of an alternative technique for RQ estimation in anesthetized pigs.Intensive care medicine experimental · 2024Article
- Comparison of energy expenditure measurements by a new basic respiratory room vs. classical ventilated hood.Nutrition journal · 2023Article
- Effects of Olympic Combat Sports on Cardiorespiratory Fitness in Non-Athlete Population: A Systematic Review of Randomized Controlled Trials.Journal of clinical medicine · 2023Review
- The effects of chemotherapy on resting energy expenditure, body composition, and cancer-related fatigue in women with breast cancer: a prospective cohort study.Cancer & metabolism · 2023Article
- Hypothesized pathways for the association of vitamin D status and insulin sensitivity with resting energy expenditure: a cross sectional mediation analysis in Australian adults of European ancestry.European journal of clinical nutrition · 2022Article
- The cost of chewing: The energetics and evolutionary significance of mastication in humans.Science advances · 2022Article
- The Impact of the Metabolic Syndrome and Its Components on Resting Energy Expenditure.Metabolites · 2022Article
- Validity of four commercially available metabolic carts for assessing resting metabolic rate and respiratory exchange ratio in non-ventilated humans.Clinical nutrition (Edinburgh, Scotland) · 2022Article
- Article
- Energy expenditure due to gluconeogenesis in pathological conditions of insulin resistance.American journal of physiology. Endocrinology and metabolism · 2021Article
- Validity and reproducibility of VOScandinavian journal of medicine & science in sports · 2021Article
- Point-Counterpoint: Indirect Calorimetry Is Essential for Optimal Nutrition Therapy in the Intensive Care Unit.Nutrition in clinical practice : official publication of the American Society for Parenteral and Enteral Nutrition · 2021Article
- The use of a portable metabolic monitoring device for measuring RMR in healthy adults.The British journal of nutrition · 2020Article
Corrections and comments
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Authors and funding
14 authors.
Funding
Abstract
backgroundSeveral indirect calorimetry (IC) instruments are commercially available, but comparative validity and reliability data are lacking. Existing data are limited by inconsistencies in protocols, subject characteristics, or single-instrument validation comparisons. The aim of this study was to compare accuracy and reliability of metabolic carts using methanol combustion as the cross-laboratory criterion.
methodsEight 20-minute methanol burn trials were completed on 12 metabolic carts. Respiratory exchange ratio (RER) and percent O
resultsFor accuracy, 1 Omnical, Cosmed Quark CPET (Cosmed), and both Parvos (Parvo Medics trueOne 2400) measured all 3 variables within 2% of the true value; both DeltaTracs and the Vmax Encore System (Vmax) showed similar accuracy in measuring 1 or 2, but not all, variables. For reliability, 8 instruments were shown to be reliable, with the 2 Omnicals ranking best (coefficient of variation [CV] < 1.26%). Both Cosmeds, Parvos, DeltaTracs, 1 Jaeger Oxycon Pro (Oxycon), Max-II Metabolic Systems (Max-II), and Vmax were reliable for at least 1 variable (CV ≤ 3%). For multiple regression, humidity and amount of combusted methanol were significant predictors of RER (R
conclusionsOmnical, Parvo, Cosmed, and DeltaTrac had greater accuracy and reliability. The small number of instruments tested and expected differences in gas calibration variability limits the generalizability of conclusions. Finally, humidity and temperature could be modified in the laboratory to optimize IC conditions.
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