Breaking sedentary patterns to improve cardiovascular health in diabetic kidney disease: a wearable-supported intervention

Background Sedentary behavior is a potent, independent driver of cardiovascular morbidity in diabetes, and patients with diabetic kidney disease (DKD) exhibit particularly high cardiometabolic vulnerability. Despite this, real-world strategies capable of meaningfully reducing sedentary time in DKD—beyond simply promoting exercise—remain limited, and objective evidence on clinically delivered behavioral interventions is scarce. Purpose To determine whether a physiotherapist-led, wearable-guided intervention can produce clinically relevant reductions in sedentary behavior and improvements in moderate-to-vigorous physical activity (MVPA), functional capacity, and cardiometabolic risk markers in DKD. Methods This single-center, non-randomized controlled trial enrolled 66 DKD outpatients; 45 completed six-month follow-up (intervention group [IG] n=13; non-intervention group [NIG] n=11). All participants wore waist-worn ActiGraph accelerometers at baseline and six months. The IG additionally wore wrist accelerometers enabling monthly physiotherapist feedback designed to target sedentary behavior reduction and MVPA enhancement. This was integrated into a hybrid exercise program combining in-person coaching with remote monitoring. Outcomes included sedentary time, MVPA, estimated glomerular filtration rate (eGFR), hemoglobin A1c (HbA1c), muscle strength, and six-minute walk distance (6MWD). Results The IG achieved substantial and statistically significant reductions in sedentary time and increases in MVPA compared with the NIG (p<0.05). Importantly, these behavioral changes translated into measurable clinical benefits: improvements in eGFR, HbA1c, muscle strength, and 6MWD were observed exclusively in the IG. Together, these findings demonstrate a meaningful shift in cardiometabolic and functional risk profiles—an outcome rarely achieved in DKD using lifestyle-based interventions alone. Conclusions A physiotherapist-led, wearable-assisted hybrid exercise intervention produced robust improvements in sedentary behavior, physical activity, functional capacity, and key cardiometabolic indicators in DKD. This study provides compelling evidence that targeted, feedback-driven activity interventions can modify cardiovascular risk trajectories in a population traditionally considered difficult to mobilize. Wearable-supported physiotherapy may represent a scalable strategy for addressing sedentary burden and enhancing cardiovascular health in high-risk DKD populations.