Ketone Ester Intake Did Not Improve Performance, Neither Cognitive Function or Sleep, During an 8-Day Simulated Cycling Race - Louise Engelbrecht; Wout Lauriks; Ruben Robberechts; Myrthe Stalmans; Monique Ramaekers; Elmarie Terblanche; Katrien Koppo; Chiel Poffé (Medicine & Science in Sports & Exercise, 2026)