Normative Values and Reference Equations of a New Incremental Step Test for the Assessment of Exercise Capacity for Portuguese Adults

"Performance of the incremental step test (number of steps) for the assessment of exercise capacity. The step test will be designed according to the characteristics of other validated field tests - the walking tests (6-minute walk test and the incremental shuttle walking test) The step test will be performed on a 20 cm tall, single-step device with no handles. The criteria for stopping the test will be the same as described in standard operating procedures for the walking field tests, with the addition of the inability to follow the work rate for a period of 10 seconds.~The main outcome of the test will be the highest number of steps and work rate achieved."