This experimental study aims to examine the effects of ROM (Range of Motion) exercises on comfort level and vital signs in children diagnosed with cancer.

The sample of the study consisted of a total of 60 oncology patient children, 30 in the experimental group and 30 in the control group, between the ages of 6-12, who were hospitalized in the Pediatric Bone Marrow Transplant Unit and Pediatric Hematology Oncology Service of a state hospital. The data of the study were collected with the "Data Collection Form", "Life Findings Table" and "Comfort Scale in Children". Range of motion exercise applications continued once a day for 5 days a week for approximately 20 minutes. Fever, pulse, respiration, blood pressure, pain and comfort levels of the children were measured before and after the exercise. In the study, it was investigated whether Range of motion exercises have an effect on vital signs and comfort levels of children with cancer.

Inclusion Criteria:

• Individuals between 6 and 12 years of age.
• Patients diagnosed with oncology.
• Patients who agreed to participate in the study and whose consent was obtained from their parents.
• Patients who can communicate and are conscious.

Exclusion Criteria:

• Patients with fractures or orthopedic conditions that may limit exercise.
• Patients with serious cardiac problems that may prevent exercise.