High-Intensity Interval Training for Older Adults

One repetition maximums (1RM) and body weight (BW) will be recorded at prior to and at 6 weeks to tailor the program. The circuit will be completed twice during each session and the exercises will include: squats, medicine ball forward chest throws, medicine ball overhead throw, farmers walk, seated shoulder press, seated row sitting on a fitness ball, aerobic riser step-ups, foot ladder drills, and twisting medicine ball passes. The anaerobic component will be completed once during a session and on a stationary bike. The progression of exercise:rest seconds will be 20:40 for Weeks 1-4, 30:30 for Weeks 5-8, and 40:20 for Weeks 9-12. Each session will start with a 5 minute warm up and end with a 5-minute cool down. Participants will be given real time feedback about heart rate (goal range: 85-95% HRmax) and exercise movement velocity. Participants will be encouraged to surpass the velocity of the previous repetition.