Miyahara, So, Hideo Hirai, Hideki Ishikura, and Seiji Togashi. “The Change of After Lifting the State of Emergency by COVID-19 on the Physical Activity of the Elderly Japanese People”. International Journal of Medical Science and Clinical Invention 9, no. 04 (April 27, 2022): 6040–6045. Accessed June 17, 2024. http://valleyinternational.net/index.php/ijmsci/article/view/3457.