Running aficionados are familiar with the advantages of curved manual treadmills.  100% powered by the strength of your own legs, you can determine all kinds of running workouts. Endurance runs, sprints or intervals - the Sprintbok absorbs any kind of running training thanks to its ball bearing slatted belt. The curved shape of the slat belt provides the manual treadmill with further advantages for a natural running experience. Depending on the body's center of gravity and position on the belt, users can vary running rhythm at any time. Compared to conventional treadmills, the Sprintbok by ONT curved manual treadmill technology delivers a more intense and effective running workout with overall higher strength input.