A "stair stepper" is a type of exercise machine that simulates climbing stairs. It is used to increase fitness and improve cardiovascular health. Full definition
In addition to the indoor pool and Jacuzzi, you can hit the treadmills or stair steppers while taking in spectacular views of the Gulf. (businesstravelerusa.com)
This can include hitting the elliptical or stair stepper at your gym, going for a walk or run in the park, a hike — you name it; as long as you're getting your heart rate elevated and breaking a sweat, you will be torching calories and blasting body fat. (womenshealthandfitness.com.au)
The group also includes stair steppers, treadmills, rowing machines and exercise bikes. (aimworkout.com)