The Effects of Mobile-App-Based Low-Carbohydrate Dietary Guidance on Postprandial Hyperglycemia in Adults with Prediabetes

摘要

IntroductionPostprandial hyperglycemia is independently associated with many adverse complications, while diets with a low glycemic load are beneficial in improving post-meal glucose levels. This study aims to determine if mobile-app-based low-carbohydrate dietary guidance will reduce exposure to postprandial hyperglycemia in adults with prediabetes.MethodsThis single-blind, randomized controlled pilot study included 100 participants (39 men; mean age 53.6?±?11.9?years) and was performed in the PKU Care CNOOC Hospital, China. The intervention group ( n =?57) received low-carbohydrate dietary guidance through a moblie app (CAReNA) for 3 months, while the control group ( n =?43) only received health education on a diabetic diet. The primary outcome was change in time of postprandial hyperglycemia between baseline and 3?months.ResultsThe study revealed that the mean time in postprandial hyperglycemia (?7.8?mmol/l [140?mg/dl]) monitored by flash glucose monitoring changed from 3.27?h/day at baseline to 2.34?h/day at 3?months in the intervention group and from 3.08?h/day to 2.96?h/day in the control group, with a between-group difference of ??0.81?h/day ( P ?0.05). Fasting plasma glucose and glycated hemoglobin (HbA1c) in the intervention group decreased significantly, although no significant difference was seen between the two groups. Compared with the control group, the intervention group had a significant decrease in anthropometric and body composition measurements as well as triglycerides.ConclusionThe mobile-app-based low-carbohydrate dietary guidance effectively reduced the time spent in postprandial hyperglycemia in adults with prediabetes. This new type of nutritional management has beneficial effects on people with prediabetes and needs further research.Clinical Trial RegistrationChiCTR1900024880.