Figure 2.
Accelerometer data from the Advanced Industrial Science and Technology (AIST) gait database and from when the device was correctly or incorrectly attached at the waist of the participants. (A) Vertical acceleration data for the right waist (anterior superior iliac spine) of 204 participants aged 20 to 77 from the AIST gait database28. (B) Example data for one participant with the accelerometer attached at the waist for all 14 days. (C) Data from another participant with no valid measurement days during the 14-day period. Based on the AIST gait database, if the average acceleration during 25–35% and 80–90% of the gait cycle is greater than that during 50–60% of the gait cycle, the acceleration data are excluded from analysis.