Participants wore the activPALs on their right thighs. It was attached using a non-allergenic adhesive pad and positioned on the midline of the thigh, one-third of the way between the hip and knee. The time-stamped “event” data file from the activPAL software (version 5.8.5) was used to identify the duration of each sitting/lying, standing and stepping bout. The event file was converted to second-by-second data using an R program to synchronize data with the DO file.