APLN and type 2 diabetes mellitus: In T2DM population without HFpEF HOMA-IR was significantly and positively correlated with WHR (r = 0.50; p = 0.001), waist circumference (r = 0.48; p = 0.001), BMI (r = 0.48; p = 0.002), LH hypertrophy (r = 0.42; p = 0.001), age (r = 0.44; p = 0.012), serum TG (r = 0.46; p = 0.001), hs-CRP (r = 0.38; p = 0.042) and NT-proBNP (r = 0.27; p = 0.036), apelin (r = 0.32; p = 0.022).