Effects of Mobile Health Care App "Asmile" on Physical Activity of 80,689 Users in Osaka Prefecture, Japan: Longitudinal Observational Study

Asuka Oyama   ¹ , PhD ;   Kenshiro Taguchi   ^{1, 2} , MS ;   Hiroe Seto   ^{1, 3} , PhD ;   Reiko Kanaya   ⁴ , MS ;   Jun'ichi Kotoku   ^{1, 2, 5} , PhD ;   Miyae Yamakawa   ⁴ , PhD, RN ;   Hiroshi Toki   ¹ , PhD ;   Ryohei Yamamoto   ^{1, 6, 7, 8} , MD, PhD

¹ Health and Counseling Center, The University of Osaka, Toyonaka, Japan

² Graduate Degree Program of Health Data Science, Teikyo University, Tokyo, Japan

³ Graduate School of Human Sciences, The University of Osaka, Suita, Japan

⁴ Division of Health Sciences, Graduate School of Medicine, The University of Osaka, Suita, Japan

⁵ Graduate School of Medical Care and Technology, Teikyo University, Tokyo, Japan

⁶ Department of Nephrology, Graduate School of Medicine, The University of Osaka, Suita, Japan

⁷ Laboratory of Behavioral Health Promotion, Department of Health Promotion, Graduate School of Medicine, The University of Osaka, Suita, Japan

⁸ Institute for Sports and Global Health, The University of Osaka, Suita, Japan