Effect of a Wearable Device–Based Physical Activity Intervention in North Korean Refugees: Pilot Randomized Controlled Trial

Ji Yoon Kim   ^{1, 2 *} , MD, MS ;   Kyoung Jin Kim   ^{1 *} , MD, PhD ;   Kyeong Jin Kim   ^{1 *} , MD, PhD ;   Jimi Choi   ¹ , PhD ;   Jinhee Seo   ³ , MS ;   Jung-Been Lee   ⁴ , PhD ;   Jae Hyun Bae   ¹ , MD, PhD ;   Nam Hoon Kim   ¹ , MD, PhD ;   Hee Young Kim   ¹ , MD, PhD ;   Soo-Kyung Lee   ³ , PhD ;   Sin Gon Kim   ¹ , MD, PhD

¹ Division of Endocrinology and Metabolism, Department of Internal Medicine, Korea University College of Medicine, Seoul, Republic of Korea

² Division of Endocrinology and Metabolism, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea

³ Department of Food and Nutrition, Inha University, Incheon, Republic of Korea

⁴ Division of Computer Science and Engineering, Sun Moon University, Asan, Republic of Korea

*these authors contributed equally