Effects of a personal health coaching intervention (dbcoach) on physical activity and glycated hemoglobin in patients with type 2 diabetes - A randomized controlled trial.

Authors

Vivien Hohberg, Eric Lichtenstein, Jan-Niklas Kreppke, Jan Kohl, Marc Donath, Fiona Streckmann, Markus Gerber, Lukas Zahner, Oliver Faude

Published in

Journal of science and medicine in sport. May 28, 2025. Epub May 28, 2025.

Abstract

This study aims to evaluate the effectiveness of the dbcoach intervention in improving key health outcomes in patients with type 2 diabetes.
The study employed a pragmatic randomized controlled trial with 100 participants randomly assigned to either an intervention group receiving 12 months of telephone-based coaching plus standard care, or a control group receiving standard care only.
Primary outcomes were objectively measured moderate-to-vigorous physical activity and glycated hemoglobin, while secondary outcomes included further physical activity measures, diet, anthropometrics, medication, and quality of life. Data were collected at baseline as well as after 6 and 12 months. Linear mixed-effects models were employed for analysis.
The intervention improved moderate-to-vigorous physical activity (Cohen's d = 0.51; 95 % confidence interval: 0.11, 0.90) with an increase of 14.2 (95 % confidence interval: 3.0, 25.3) minutes per day. However, the effect on glycated hemoglobin was negligible (95 % confidence interval: -0.20; 0.32, -0.72). Sedentary behavior was decreased (Cohen's d = -0.20; -0.71, 0.31). Analysis of medication showed variability, with decreased use of total insulin (rate ratio = 0.82; confidence interval 0.50, 3.03), but higher overall diabetes medication in the intervention group. There were no differences in diet (Cohen's d = -0.12; 95 % confidence interval: -0.78, 0.53) and BMI (Cohen's d = 0.01; 95% confidence interval: -0.16, 0.15).
The dbcoach intervention increased physical activity but did not impact glycated hemoglobin in type 2 diabetes patients. While the intervention can enhance physical activity, additional strategies may be necessary for glycemic control.

PMID:
40500612
Bibliographic data and abstract were imported from PubMed on 12 Jun 2025.

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