... Mach Z commercial-plus motor, a shock-absorbing running deck, and tons of workout programs–but ... Finally, the treadmill offers four timed workouts that with a variety of time lengths to match your ... joints as compared to road running, along with a 20-by-40-inch running belt that encourages long, ... like the knees and hips, treadmill walking and running surfaces are typically long, padded platforms that ...