Objective Assessment of Physical Activity at Home Using a Novel Floor-Vibration Monitoring System: Validation and Comparison With Wearable Activity Trackers and Indirect Calorimetry Measurements

Yuki Nakajima   ^{1 *} , BSc ;   Asami Kitayama   ^{1 *} , MSc ;   Yuji Ohta   ¹ , DEng ;   Nobuhisa Motooka   ¹ , PhD ;   Mayumi Kuno-Mizumura   ² , PhD ;   Motohiko Miyachi   ^{3, 4} , PhD ;   Shigeho Tanaka   ^{4, 5} , PhD ;   Kazuko Ishikawa-Takata   ^{4, 6} , PhD ;   Julien Tripette   ^{1, 4, 7} , PhD

¹ Department of Human-Environmental Sciences, Ochanomizu University, Bunkyo, Japan

² Department of Performing Arts, Ochanomizu University, Bunkyo, Japan

³ Faculty of Sport Sciences, Waseda University, Tokorozawa, Japan

⁴ National Institute of Health and Nutrition, National Institutes of Biomedical Innovation, Health and Nutrition, Settsu, Japan

⁵ Faculty of Nutrition, Kagawa Nutrition University, Sakado, Japan

⁶ Faculty of Applied Biosciences, Tokyo University of Agriculture, Setagaya, Japan

⁷ Center for Interdisciplinary AI and Data Science, Ochanomizu University, Bunkyo, Japan

*these authors contributed equally