aDepartment of Psychosocial Science

bHuman Enhancement and Body Image Lab (HEBI Lab), Addiction Research Group, University of Bergen, Bergen

cAnabolic Androgenic Steroid Research Group, Section for Clinical Addiction Research, Division of Mental Health and Addiction, Oslo University Hospital

dPROMENTA Research Center, Department of Psychology, University of Oslo, Oslo, Norway

eSchool of Life Sciences, Pharmacy and Chemistry, Faculty of Health, Science, Social Care and Education, Kingston University, London, UK

fInstitute of Health Promotion and Sport Sciences, Eötvös Loránd University (ELTE), Budapest, Hungary

Correspondence to Dominic Sagoe, Department of Psychosocial Science, University of Bergen, Christiesgate 12, 5015 Bergen, Norway. Tel: +47 45531850; e-mail: [email protected]