INS and type 2 diabetes mellitus: <b>Methods</b>: Thirty adults (15 men and 15 women) aged 60-80 years with non-insulin-treated T2DM and sarcopenia-related deficits were randomized for 12 weeks to a higher-protein diet (1.2-1.5 g·kg<sup>-1</sup>·day<sup>-1</sup>) or a recommended protein diet (0.8-1.0 g·kg<sup>-1</sup>·day<sup>-1</sup>), with meal plans designed to maintain body mass.