máy treadmill, nếu set kiểu dốc lên là inclined walking.

Graded walking: tăng cường độ có thể bằng cách tăng tốc độ hoặc tạo độ dốc.


Maximal-Graded Exercise Tests on a Treadmill
Testing begins with the patient on a treadmill and starting to walk or jog at low intensity. The low intensity will put only a small amount of stress on the cardiovascular system. As the test continues, it will get progressively harder. Making the patient go faster or making the incline steeper will raise the intensity. The faster or steeper you go, the more stress on the cardiovascular system, thereby helping to find its limits. (http://www.livestrong.com/article/372239-maximal-graded-exer...