Use of the Peak Heart Rate Reached During Six-Minute Walk Test to Predict Individualized Training Intensity in Patients With Cystic Fibrosis: Validity and Reliability

HR6peak is valid and demonstrates satisfactory test-retest reliability in patients with CF. These results might suggest the use of HR6peak as a simple alternative method to individualize exercise prescriptions in this population. Further studies are needed in a larger cohort of patients to confirm these preliminary findings.