Trial reportBMJ open2025
Comparison of Vyntus CPX and Vmax Encore 29N for indirect calorimetry: a randomised crossover study in participants of the German Diabetes Study with type 2 diabetes.
Trial report in BMJ open, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT01055093 (Prospective Study on Diabetes Mellitus and Its Complications in Newly Diagnosed Adult Patients), which is not on this map. Not yet cited in PubMed.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Prospective Study on Diabetes Mellitus and Its Complications in Newly Diagnosed Adult Patients
Who cites it
0 citing papers in PubMed.
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Corrections and comments
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Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectivesThis study compared the reliability of two metabolic cart systems, Vyntus CPX and Vmax Encore 29N, to measure whole-body energy metabolism by indirect calorimetry (IC) in individuals with type 2 diabetes (T2D).
designRandomised, prospective, crossover study.
settingSingle-centre study conducted in the clinical research centre of the German Diabetes Study (GDS).
participantsFive participants (3 men, 2 women, mean age 49±6 years, body mass index (BMI) 32.62±4.2 kg/m²) with T2D completed the study protocol. Eligibility requires existing participation in GDS and availability for four consecutive study days.
interventionsParticipants underwent four IC measurements per day on four consecutive days, totalling 16 measurements per device. On each study day, two measurements with both devices, Vyntus CPX and Vmax Encore 29N, were performed in randomised order. Postcalorimetric gas calibration with normalisation was applied after each measurement. PRIMARY OUTCOME MEASURES: Reliability of respiratory quotient (RQ) and resting energy expenditure (REE), as assessed from the coefficient of variation (CV) and 95% CIs.
resultsDevice comparison showed minor differences in CV (95% CI) for carbon dioxide production (VCO TRIAL REGISTRATION NUMBER: ClinicalTrials.gov identifier: NCT01055093.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.