Comparison of Pulmonary Function, Exercise Capacity, and Physical Activity Level Between Children With Hemophilia and Healthy Controls

Hemophilia group Inclusion criteria: * Having been diagnosed with hemophilia and being clinically stable, * Being between the ages of 8-18, * Being on prophylaxis treatment (a routine treatment), * Being 125 cm or taller, * Being inhibitor negative at the time of enrollment, * To be able to cooperate with the tests to be performed, * Being willing to participate in the study. Exclusion criteria: * Being inhibitor positive at the time of enrollment, * Having a history of acute joint bleeding, * Being unable to bear weight on the extremities, * Having a history of acute intramuscular bleeding, * Having undergone radionuclide synovectomy, * Having a history of surgery on any of the lower extremity joints, * Having a severe cardiovascular, orthopedic or neurological problem that may affect the assessments. Control group Inclusion criteria: * Not having any known internal or chronic disease * Being male between the ages of 8-18 * Having full range of motion in the upper extremity * Having full range of motion in the lower extremity * Not having any history of injury or surgery in the lower extremity * Being 125 cm or taller * Being willing to participate in the study Exclusion criteria: * Having any problem that may affect the tests * Not having full range of motion in the upper extremity * Having a history of injury or surgery in any of the lower extremity joints * Having a neurological deficit * Having pain or movement limitation in the lower extremity