Association of Acarbose with Decreased Muscle Mass and Function in Patients with Type 2 Diabetes: A Retrospective, Cross-Sectional Study.

INTRODUCTION: Prevalence of sarcopenia has increased in patients with type 2 diabetes. The influence of glucose-lowering drugs on muscles in these patients remains unclear. We aimed to investigate the association between muscle mass/function and glucose-lowering drugs. METHODS: Data of 1042 hospitalized patients with type 2 diabetes were included in this retrospective, cross-sectional study. All the patients had stable hypoglycemic therapy in the last 3 months, and performed bioelectrical impedance analysis, grip strength, and gait speed tests on admission. RESULTS: Skeletal muscle index [6.81 (95% CI 6.67, 6.94) vs. 7.17 (7.09, 7.24) kg/m2], handgrip strength [23.41 (22.24, 24.58) vs. 26.93 (26.33, 27.54) kg], and gait speed [1.19 (1.15, 1.22) vs. 1.27 (1.25, 1.28) m/s] decreased in patients using acarbose compared with the others (all p < 0.001). Gait speed and skeletal muscle index remained lower in patients using acarbose compared to their matched patients in propensity score matching (p = 0.036 and 0.010, respectively). Among drug-naïve patients and patients using insulin, metformin, sulfonylureas, or acarbose monotherapy, the acarbose group had lowest skeletal muscle index and handgrip strength [6.81 (6.52, 7.11) kg/m2 and 22.54 (19.28, 25.79) kg, p = 0.028 and 0.001, respectively]. CONCLUSION: Acarbose treatment was associated with decreased muscle mass and strength. Assessment and exercise of muscles in patients with long-term acarbose treatment should be considered.