Six-Minute Walking Test

The 6MWT is a submaximal exercise test that assesses the maximum distance that a patient can walk voluntarily in 6 min. The test was performed in an indoor corridor far away from other people. The track was 30 m in length, marked every 3 m, with the turn-around points marked with a cone. The participants were instructed to walk as fast as they can for 6 min. They were allowed to rest or stop the test depending on their conditions during the test [16], and radio electrocardiography (SHC-U8, Solmitech, Korea) was used to record changes in heart rate every 10 s. Total distance, RPE, and HRmax at the end of the test were recorded.