“…Participants had to be older adults who did not participate in regular activities, particularly physical exercise (conducted 2 or 3 times a week for at least 20 min at a time) on a regular basis. Four of the 10 studies included participants who had been diagnosed with cognitive impairment (Clinical Dementia Rating Scale [CDR], score 0.5 or 1.0 on the Mini-Mental State Examination [MMSE] score 16 and above; Dannhauser et al, 2014; Kang et al, 2010; Tesky et al, 2014; Viola et al, 2011). Four studies included healthy adults with psychological complaints (subjective feelings of loneliness and depression according to participants’ self-reports, reports by health care providers, or based on a score between 1 and 5 on the Geriatric Depression Scale [GDS] or between 3 and 10 on the Geriatric Anxiety Inventory [GAI]; Kamegaya, Araki, Kigure, & Yamaguchi, 2014; McCaffrey, Liehr, Gregersen, & Nishioka, 2011; Pitkala, Routasalo, Kautiainen, & Tilvis, 2009; Rawtaer et al, 2015).…”