Forty elderly men were included in this study comparing power training plus high intensity interval training vs traditional strength training combined with high intensity interval training for the improvement of muscle function, morphology, and cardiovascular fitness. Primary outcomes of interest included 1 rep max in the knee extension and leg press exercises, rate of force development, and absolute and relative power. Secondary outcomes of interest included muscle thickness of the quadriceps femoris muscles, absolute and relative peak VO2, and rate of force development. Outcomes were assessed after 8 and 16 weeks of treatment. All outcomes significantly improved from baseline after 16 weeks of treatment. Results were similar between the two groups.