Effects of an mHealth App (Kencom) With Integrated Functions for Healthy Lifestyles on Physical Activity Levels and Cardiovascular Risk Biomarkers: Observational Study of 12,602 Users

Rikuta Hamaya   ^{1, 2} , MD, MSc ;   Hiroshi Fukuda   ^{3, 4} , MD, PhD ;   Masaki Takebayashi   ⁵ , PhD ;   Masaki Mori   ⁶ , PhD ;   Ryuji Matsushima   ⁶ , BA ;   Ken Nakano   ⁶ , MEng ;   Kuniaki Miyake   ⁶ , MD, PhD ;   Yoshiaki Tani   ⁶ , MSc ;   Hirohide Yokokawa   ³ , MD, PhD

¹ Division of Preventive Medicine, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA, United States

² Department of Epidemiology, Harvard University, Boston, MA, United States

³ Department of General Medicine, School of Medicine, Juntendo University, Tokyo, Japan

⁴ Department of Advanced Preventive Medicine and Health Literacy, Graduate School of Medicine, Juntendo University, Tokyo, Japan

⁵ Graduate School of Health Science, Aomori University of Health and Welfare, Aomori, Japan

⁶ DeSC Healthcare Inc., Tokyo, Japan