Machine Learning for Estimating Cardiorespiratory Fitness in Patients With Obesity: Protocol for a Retrospective and Prospective Multicenter Cohort Study

Jarle Berge   ^{1, 2, 3} , PhD ;   Vimala Nunavath   ⁴ , PhD ;   Rikke Aune Asbjørnsen   ^{5, 6} , PhD ;   Heidi Borgeraas   ¹ , PhD ;   Jens Kristoffer Hertel   ¹ , PhD ;   Anita Dyb Linge   ^{7, 8} , PhD ;   Inge Groote   ⁹ , PhD ;   Trine Stensrud   ¹⁰ , PhD ;   Espen Gjevestad   ³ , PhD ;   Linda Mathisen   ¹ , BSc ;   Matthan WA Caan   ¹¹ , PhD ;   Martin Paulson   ¹² , MD ;   Eva Maria Støa   ¹³ , PhD ;   Jan - Michael Johansen   ¹³ , PhD ;   AI and VO2max Group   ¹⁴ ;   Bjørn-Jostein Singstad   ^{1, 4, 5, 9, 15, 16} , Phd

¹ Department of Endocrinology, Obesity and Nutrition, Vestfold Hospital Trust, Tonsberg, Norway

² Department of Neurology and Rehabilitation, Vestfold Hospital Trust, Stavern, Norway

³ Department of Joint Operative Disciplines, Norwegian Police University College, Stavern, Norway

⁴ Department of Science and Industry Systems, University of South-Eastern Norway, Kongsberg, Norway

⁵ Department of Research and Innovation, Vestfold Hospital Trust, Tonsberg, Norway

⁶ Departement of Digital Health Research, Oslo University Hospital, Oslo, Norway

⁷ Muritunet Rehabilitation Centre, Valldal, Norway

⁸ Department of Social Science and History, Volda University College, Volda, Norway

⁹ Department of Radiology, Vestfold Hospital Trust, Tonsberg, Norway

¹⁰ Department of Sports Medicine, Norwegian School of Sports Sciences, Oslo, Norway

¹¹ Department of Radiology, University of Amsterdam, Amsterdam, The Netherlands

¹² Department of Oncology and Hematology, Vestfold Hospital Trust, Tonsberg, Norway

¹³ Department of Sports, Physical Education and Outdoor Studies, University of South-Eastern Norway, Bø, Norway

¹⁴ See Acknowledgments

¹⁵ Medical Technology and E-health, Akershus University Hospital, Lørenskog, Norway

¹⁶ Institute of Clinical Medicine, University of Oslo, Oslo, Norway