Exercise may ameliorate mitochondrial dysfunction, insulin resistance and physical functioning in CKD. Studies of exercise in non-CKD patients with diabetes and insulin resistance have demonstrated exercise-induced improvements in mitochondrial biogenesis linked to improved insulin sensitivity as well as decreased mitochondrial oxidative stress. Animal studies suggest that exercise stimulates autophagy resulting in removal of defective and inefficient mitochondrial leading to a healthy mitochondrial network and improved insulin sensitivity.The primary goal of this study is to investigate the impact of combined resistance and aerobic exercise on skeletal muscle dysfunction. Given the investigator's preliminary data demonstrating strong association of sarcopenia and mortality in CKD, effective interventions that can impact physical function are urgently needed to improve patient health outcomes.