INS and Insulin resistance: Grip strength, skeletal muscle mass (SM), skeletal muscle mass index (SMI), 6‐m gait speed (6‐m GS), glycated haemoglobin (HbA1c), fasting blood glucose (FBG), fasting insulin (FINS) and homeostasis model assessment of insulin resistance (HOMA‐IR) were measured at 0, 3 and 6 months, respectively.