INS and type 2 diabetes mellitus: The present study applied Taichi training with 60 min/day, 6 days/week for 24 weeks to investigate the beneficial effect on pulmonary diffusion capacity and blood glycemic control, and moreover, the association of pulmonary diffusion capacity with blood levels of glucose, insulin, HbA1c, inflammatory markers, and endothelium-derived factors in older patients with T2DM.