Exercise testing is the most common determination of exercise limitation and responsiveness of intervention in COPD. It has several exercise protocols including laboratory test and field test. Both test aim to investigate exercise capacity but laboratory test have more parameter detail than field test. In 2013 Borel et al, classified the exercise protocols into three categories by using the workload characteristic (incremental or constant) and the self-paced test. Self-paced test was developed to solve the disadvantage of Incremental and Constant work rate (laboratory test). Moreover,it reflect functional activity and is easy to use. Self-paced test that most famous test such as six minute walk test, step test and stepper test Six minute walk test (6-MWT) assesses distance walked as far as possible within 6 minutes on straight courses. Although the 6-MWT is the most reliable, but it is impractical (Kocks et al., 2011) because of environmental constrain (this test should be performed wild area).