Curve treadmill
A curved treadmill is a non-motorized, concave device that allows users to walk and run on it with each foot strike propelling the belt behind them. The system is designed to exploit the vertical and horizontal contours, pulling the belt down and back from the walking or running stride, Best Curved Treadmills for Sale [2020 Buyer's Guide ... A curved treadmill is a non-motorized treadmill built at almost a 30% incline. The self-powered treadmill requires users to use more natural force to move. This, in turn, exerts more energy and calories overall. During the downward movement of your run, your foot and weight pull the belt down and back.