Fig 1.
The small volume “flex” metabolic chamber at the Fralin Biomedical Research Institute at Virginia Tech Carilion in Roanoke, Virginia, set up for a resting measurement.
Fig 2.
A sample infusion depicting expected (solid) and observed (dashed) (A) VO2 and (B) VCO2 values. Resting, stepped increase, and human study simulation event sections are denoted by differing background shading.
Table 1.
Reproducibility of O2 and CO2 recovery across specified event sections during infusion validation studies (n = 3).
Table 2.
Participant characteristics (n = 16).
Fig 3.
Mean resting (A) metabolic rate, (B) carbohydrate oxidation, and (C) respiratory exchange ratio across dextrose (n = 13), fructose (n = 16), and sucrose (n = 13) conditions assessed by linear mixed effects models.
Fig 4.
Postprandial change from resting (A) metabolic rate, (C) carbohydrate oxidation, and (E) RER; and areas under the curve for percent change from resting (B) metabolic rate, (D) carbohydrate oxidation, and (F) RER in response to consumption of 75-kcal beverages containing dextrose, fructose, or sucrose. Gray background on line plots A, C, and E indicate data 4 minutes before and after drink consumption, which were excluded from analysis. Data are expressed as mean ± standard error of the mean. *, p<0.05; RER: respiratory exchange ratio.
Table 3.
Comparison postprandial carbohydrate oxidation parameters in response to dextrose-, fructose-, and sucrose-containing beverage consumption as assessed by standard methods and Bayesian Hierarchical Modeling statistical methods.