Effects of Core Stabilization Exercises in Children with Acute Lymphoblastic Leukemia

This study tests whether core stabilization exercises — targeted workouts that strengthen the muscles around the spine and abdomen — can improve physical function and reduce fatigue in children with acute lymphoblastic leukemia (ALL, a type of blood cancer) who are in the maintenance phase of chemotherapy. **You may be eligible if...** - Your child is 7–18 years old with a diagnosis of ALL - Your child is currently in the maintenance phase of chemotherapy - Your child can understand and follow verbal instructions - Your child does not have active blood clots, uncontrolled pain, or circulatory instability **You may NOT be eligible if...** - Your child has received or is receiving cranial (brain) radiation - Your child has heart or lung disease - Your child has bone, joint, or muscle problems - Your child has a neuromotor disorder or a genetic syndrome Talk to your doctor to see if this trial is right for you.