The Effects of Ketone Ester Supplementation During a 5 Week Live High, Train Low Altitude Training Camp

Inclusion Criteria: * Physically fit and regularly involved in physical activity (2-5h per week) * Good health status confirmed by a medical screening * Non-smoking Exclusion Criteria: * Any kind of injury/pathology that is a contra-indication to perform high-intensity exercise * Any kind of injury/pathology that is a contra-indication for exposure to hypoxia * Ongoing pregnancy or breastfeeding * intake of any medication or nutritional supplement that is proven to affect exercise performance during the last month prior to the start of the study * Involvement in elite athletic training at a semi-professional or professional level * Exposure to altitudes higher than 1500 m during the 3 months prior to the start of the study * Blood ferritin levels below 30 ng/mL * Current participation in another research trial * Any other argument to believe that the subject is unlikely to succesfully complete the full study protocol