Fig 1.
Blood glucose levels throughout the trials.
Average glycemia (dots and thick line) throughout the trials is plotted against day-time; thin lines are the individual blood glucose levels at rest, before and throughout the 3-h exercise are also illustrated. Horizontal dashed lines: hypoglycemic and hyperglycemic thresholds.
Fig 2.
Plasma insulin concentrations throughout the trials.
Average laboratory measured plasma insulin concentrations (full dots and thick line) at rest, before and throughout the 3-h exercise is plotted against day-time; thin lines are the individual concentrations.
Fig 3.
Relationship between insulin concentrations estimated by the Ecres algorithm and the corresponding laboratory-measured values.
The relationship between estimated and measured insulin concentrations was statistically significant (R = 0.771, p < 0.001, n = 81). Dashed lines are the 95% Confidence Limits. Dashed-dotted line is the identity line.
Fig 4.
Whole-body carbohydrates oxidation rates throughout the exercise.
Average whole-body carbohydrates oxidation rates (full dots and thick line) are illustrated as a function of exercise duration. Thin lines are the individual oxidation rates.
Fig 5.
Comparison between the estimated carbohydrates oxidation rate and the corresponding actually measured values.
Relationship between the estimated carbohydrates oxidation rates over 30 min period of the exercise and corrected for the overall exercise duration, and the actually measured values. The relationship was statistically significant and close to the identity line (R = 0.877, p < 0.001, n = 54). Dashed lines are the 95% Confidence Limits. Dashed-dotted line is the identity line.
Fig 6.
Comparison between the estimated amounts of required carbohydrates and the corresponding actually administered quantities.
Relationship between the amounts of required carbohydrates estimated by the algorithm for the 30 min exercise periods and the actually administered quantities. The relationship was statistically significant and close to the identity line (R = 0.788, p < 0.001, n = 54). Dashed lines are the 95% Confidence Limits. Dashed-dotted line is the identity line.
Fig 7.
Individual differences between the estimated amounts of carbohydrates and the actually administered quantities.
Average differences (full dots and thick line) between the actually administered amounts of carbohydrates for each of the 30 min exercise periods and the corresponding quantities estimated by the Ecres algorithm. Thin lines are the individual differences.