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Sachiko Ozone, Ryohei Goto, Shogo Kawada, Shoji Yokoya, Tetsuhiro Maeno

Tamaki Hirose, Yohei Sawaya, Masahiro Ishizaka, Naori Hashimoto, Akira Kubo, Tomohiko Urano

隆広柴, 洋平沢谷, 友彦浦野

Tengku Aizan Hamid, Sarah Abdulkareem Salih, Siti Farra Zillah Abdullah, Rahimah Ibrahim, Aidalina Mahmud

Tamaki Hirose, Yohei Sawaya, Masahiro Ishizaka, Naori Hashimoto, Akira Kubo, Tomohiko Urano

環広瀬, 洋平沢谷, 友彦浦野

Tamaki Hirose, Yohei Sawaya, Masahiro Ishizaka, Naori Hashimoto, Akira Kubo, Tomohiko Urano

Kenichiro Sato, Yoshiki Niimi, Takeshi Iwatsubo, Shinya Ishii

Tamaki Hirose, Yohei Sawaya, Masahiro Ishizaka, Naori Hashimoto, Akihiro Ito, Yoshiaki Endo, Kaoru Kobayashi, Akihiro Yakabi, Ko Onoda, Tsuyoshi Hara, Miyoko Watanabe, Masafumi Itokazu, Akira Kubo, Tomohiko Urano

環広瀬, 洋平沢谷, 隆広柴, 佳章遠藤, 正大石坂, 晃久保, 友彦浦野

2025	Relationship of frailty and resumption of social participation activities after the COVID‐19 pandemic among community‐dwelling older adults in Japan Journal of General and Family Medicine Sachiko Ozone, Ryohei Goto, Shogo Kawada, Shoji Yokoya, Tetsuhiro Maeno
2025	Frailty incidence proportion is more influenced by age than by time period: A retrospective study from 2012 to 2022 Geriatrics & Gerontology International Tamaki Hirose, Yohei Sawaya, Masahiro Ishizaka, Naori Hashimoto, Akira Kubo, Tomohiko Urano
2024	The role of day-care rehabilitation for community-dwelling older adults requiring support or care Nippon Ronen Igakkai Zasshi. Japanese Journal of Geriatrics 隆広柴, 洋平沢谷, 友彦浦野
2024	Characterization of social frailty domains and related adverse health outcomes in the Asia-Pacific: a systematic literature review PeerJ Tengku Aizan Hamid, Sarah Abdulkareem Salih, Siti Farra Zillah Abdullah, Rahimah Ibrahim, Aidalina Mahmud
2024	Prevalence and factors associated with changes in frailty among community‐dwelling older adults in Japan during the COVID‐19 pandemic: A prospective cohort study from 2020 to 2022 Geriatrics & Gerontology International Tamaki Hirose, Yohei Sawaya, Masahiro Ishizaka, Naori Hashimoto, Akira Kubo, Tomohiko Urano
2023	The current situation of COVID-19 and frailty-as an example of the cohort data from the northern part of Tochigi Prefecture- Nippon Ronen Igakkai Zasshi. Japanese Journal of Geriatrics 環広瀬, 洋平沢谷, 友彦浦野
2023	Frailty under COVID‐19 pandemic in Japan: Changes in prevalence of frailty from 2017 to 2021 Journal of the American Geriatrics Society Tamaki Hirose, Yohei Sawaya, Masahiro Ishizaka, Naori Hashimoto, Akira Kubo, Tomohiko Urano
2023	Long COVID-19 Syndrome and Frailty: Cause or Consequence or Both? Journal of Aging Research and Healthcare Ray Marks
2022	Kihon Checklist items associated with the development of frailty and recovery to robust status during the COVID‐19 pandemic Geriatrics & Gerontology International Tamaki Hirose, Yohei Sawaya, Masahiro Ishizaka, Naori Hashimoto, Akira Kubo, Tomohiko Urano
2022	Change in long‐term care service usage in Japan following the COVID‐19 pandemic: A survey using a nationwide statistical summary in 2018–2021 Geriatrics & Gerontology International Kenichiro Sato, Yoshiki Niimi, Takeshi Iwatsubo, Shinya Ishii
2022	Characteristics of Japanese Older Adults Whose Trunk Muscle Mass Decreased during the COVID-19 Pandemic International Journal of Environmental Research and Public Health Tamaki Hirose, Yohei Sawaya, Masahiro Ishizaka, Naori Hashimoto, Akihiro Ito, Yoshiaki Endo, Kaoru Kobayashi, Akihiro Yakabi, Ko Onoda, Tsuyoshi Hara, Miyoko Watanabe, Masafumi Itokazu, Akira Kubo, Tomohiko Urano
2021	Relationship between disuse syndrome and possession of information communication equipment in community-dwelling older adults Nippon Ronen Igakkai Zasshi. Japanese Journal of Geriatrics 環広瀬, 洋平沢谷, 隆広柴, 佳章遠藤, 正大石坂, 晃久保, 友彦浦野
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