Combined Exercise Training and Supervision: Impact on Cardiometabolic Risk Factors, Adherence, and Quality of Life in Adults With Type 2 Diabetes

Background: Type 2 diabetes mellitus (T2DM) is a major global and national public-health challenge. Most adults do not meet the aerobic and strength guidelines necessary for the prevention and management of the disease. Purpose: To synthesize evidence on how combined exercise training (CET: aerobic + resistance) affects cardiometabolic risk factors, adherence, and quality of life (QoL) in adults with T2DM; identify the impact of supervision features, and produce equity-focused, practice-ready recommendations. Methods: Narrative synthesis reporting CET effects on cardiometabolic risk factors, adherence, and QoL, emphasizing intervention parameters and supervision models. Results: CET consistently yields modest to clinically meaningful reductions in HbA1c and fasting glucose and improves body composition, lipids, blood pressure, vascular function, inflammatory markers (CRP, IL-6), myokine responses, and VO2max. Supervised CET produces larger effect sizes, greater adherence, better technique and safety, and stronger psychosocial benefits (self-efficacy, social support, QoL) than unsupervised/usual-care programs. Heterogeneity in modalities (MICT, HIIT), resistance intensity/equipment, scheduling, supervision models, outcome metrics, and underrepresentation of diverse populations limit definitive guidance. Conclusions: Supervised CET effectively improves cardiometabolic health and QoL in adults with T2DM. Standardized reporting, head-to-head trials of scheduling and supervision, and pragmatic studies in diverse settings are needed to support scalable implementation.