Outcome measures
BBS
The study period was 15 days in total. We evaluated the participants on days 0, 7, and 14. On these days, they were instructed to walk 10 m on a flat floor at a comfortable speed 9 times while wearing a RehaGait® analyzer (HASOMED, Magdeburg, Germany). We measured the 10-m walking time (10mWT) with a stopwatch and the distance walked in 6 min (6-minute walking distance; 6MWD). We also performed timed up and go (TUG) test on days 0, 7, and 14, and BBS on days 0 and 14. We collected the following gait parameters using RehaGait®: stride duration and length, standard deviation of stride duration and length, cadence, ratio of the stance/swing phases, minimum/maximum knee joint angle, and minimum/maximum hip joint angle. We set the improvement rates of the 10mWT and 6MWD as the main outcome measures, which were calculated as the difference of values between days 14 and 0 divided by the value on day 0. All of the measurements shown above were acquired without wearing the device.