“…(Note: In this systematic review, we did not impose a particular definition of older adult but included all studies reporting on 'older adults'). Hence, an individual might be considered an older adult if aged 55 and older [8,46], or 60 and older [11,13,27,32,34,39,48], or 63 and older [19], or 65 and older [2,3,7,20,21,26,28], or 71 to 92 [25]. As a result of the reporting differences across studies, the explored research findings correspond to different age groups.…”