Developing and Validating a Step Test of Aerobic Fitness among Elementary School Children.

The tests to estimate aerobic fitness among children require substantial space and maximum effort, which is often difficult for children. We developed a simple submaximal step test (Step Test of Endurance for Pediatrics, or STEP) and assessed its reliability, validity, and ability to estimate aerobic fitness among elementary school children. Children aged 5-10 years completed the STEP with a protocol consisting of 0.