The Effect of a Citrus Extract on Exercise Performance in Moderately Trained Athletes

Inclusion Criteria: * healthy idividuals * Participants are amateur or (semi-) professional athletes in resistance or interval sports (engage in \>4 hours of intense physical activity per week). Exclusion Criteria: * Use of creatine supplements and/or anabolic steroids. * Allergy to test product/placebo * Allergy to citrus fruits * BMI lower than 18 or higher than 30 * Recent muscle injury in less than one month before the start of the study. * Cardiovascular complications * Use of medication that may interfere with the study results * Administration of investigational drugs or participation in any scientific intervention study which may interfere with this study (to be decided by the principle investigator), in the 180 days prior to the study. * Abuse of products; alcohol (\> 20 alcoholic units per week) and drugs.