RecruitingBehavioural interventionEffect of Different Meal Types Given Before Exercise on Plasma Amino Acid Levels and Metabolic Control Parameters in Classical Phenylketonuria Patients Undergoing Aerobic and Resistance ExercisesThis study will be the first in the literature to evaluate the relationship between aerobic and resistance exercises, plasma amino acid levels, metabolic control of patients, and the metabolic response to exercise with different types of meals in patients with Phenylketonuria (PKU). In patients with phenylketonuria, the aim is to determine which pre-exercise dietary recommendations are more physiologically appropriate and ideal for achieving good metabolic control. In the literature, there are very few studies examining the effects of exercise on plasma amino acid levels and metabolic parameters in PKU patients.