Truls M. Straume-Næsheim Do Minor Head Impacts in Football (Soccer) cause Concussive Injury? – A Prospective Case Control Study T M Straume-Næsheim 1 , T E Andersen 1 , I M Holme 1 , A S McIntosh 1,2 , J Dvorak 3 , R Bahr 1 1 Oslo Sports Trauma Research Center, Department of Sports Medicine, The Norwegian School of Sports Sciences Oslo, Norway, 2 School of Risk and Safety Sciences, The University of New South Wales, Australia, 3 FIFA Medical Assessment and Research Center (F-MARC), Schulthess Clinic, Zurich, Switzerland Keywords: Soccer [MeSH]; closed head trauma [MeSH]; brain injury [MeSH]; neuropsychological tests [MeSH]. Word count: 3,339 excluding tables, figure legends and references. Corresponding author: Truls Martin Straume-Næsheim MD PhD Fellow, Oslo Sports Trauma Research Center Department of Sports Medicine, The Norwegian School of Sports Sciences P.O.Box 4014 - Ullevål Stadion NO-0806 Oslo Phone: +47 23 26 23 47 Cell phone: +47 98 48 55 80 Fax: +47 23 26 23 07 E-mail: truls.straume-nesheim@nih.no / tmsn@online.no - 1 -