Association between COVID-19 emergency declarations and physical activity among community-dwelling older adults enrolled in a physical activity measurement program: Evidence from a retrospective observational study using the regression discontinuity design

• Ippei ChibaTohoku University
• Masayoshi TakahashiNagasaki University
• Sangyoon LeeNational Center for Geriatrics and Gerontology
• Seongryu BaeNational Center for Geriatrics and Gerontology
• Keitaro MakinoJapan Society for the Promotion of Science
• Osamu KatayamaJapan Society for the Promotion of Science
• Kenji HaradaNational Center for Geriatrics and Gerontology
• Kouki TomidaNational Center for Geriatrics and Gerontology
• Masanori MorikawaNational Center for Geriatrics and Gerontology
• Yukari YamashiroKao Corporation (Japan)
• Naoto TakayanagiKao Corporation (Japan)
• Motoki SudoKao Corporation (Japan)
• Hiroyuki ShimadaNational Center for Geriatrics and Gerontology