Effect of Different Meal Types Given Before Exercise on Plasma Amino Acid Levels and Metabolic Control Parameters in Classical Phenylketonuria Patients Undergoing Aerobic and Resistance Exercises

Inclusion Criteria: * Be over 18 years old, * Having a classic FKU diagnosis, * Not being actively engaged in sports, * Not having any other existing diseases, * Not having an active infection, * Have a BMI in the range of 20-28 kg/m2 within the last 3 months, * Agreeing to consume test meals and provide blood samples for parameters that will evaluate plasma amino acid levels as part of the research * Being willing to participate in this study Exclusion Criteria: * Presence of a chronic disease accompanying FKU disease (endocrine, etc.) * The individual with FKU has mental retardation or is deemed unfit for work based on psychomotor assessment, * Recent weight loss, history of hospitalisation, a past infection, or a diagnosed illness * Use of drugs or alcohol that alter protein and energy metabolism (e.g., corticosteroids, etc.) * Pregnancy status * Smoking habits The considerations to be taken into account when planning the day/date of the test are as follows. * Having engaged in heavy exercise or sports within 24 hours before the application of test diets, * Being in the menstrual period for female patients.