2.9. Continuous Glucose Monitoring
MRS
During the short visit after 1 week of the diet, a continuous glucose monitoring sensor (FreeStyle Libre, Abbott GmbH & Co, Wiesbaden, Germany)was placed at the back of the upper arm. Interstitial fluid glucose was measured every 15 min by the sensor. Measurements took place up to day 15 when the sensor was removed in the morning before the MRS measurements. Glycemic variability was calculated as the average coefficient of variation (%CV).