Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) CHO Chaeyoon,Effects of Physical Exercise on Mental Health of Frail Older Adults:,Asian Journal of Human Services,2186-3350,Asian Society of Human Services,2021,21,0,61-72,https://cir.nii.ac.jp/crid/1390289920609372928,https://doi.org/10.14391/ajhs.21.61