Prediction of Mortality in Adolescents with Cystic Fibrosis-Corrigendum: Prediction of Mortality in Adolescents with Cystic Fibrosis (Medicine and Science in Sports and Exercise (2014) 46:11 (2047-2052) DOI: 10.1249/MSS.0000000000000344)

It has come to the attention of the Editor-in-Chief that an article by Hulzebos et al. (1) contains a section in its Discussion that was plagiarized verbatim fromWilliams et al. (2) without attribution. This is a serious breach that is being corrected here. There is presently no reason to believe that the data reported by Hulzebos et al. are nonoriginal or misrepresented so the article is not being retracted at this time. The plagiarized statement in Hulzebos et al. (1) from Williams et al. (2) is shown below: Physical activity and exercise training play an important role in the clinical management of patients with CF. Exercise training is more common and recognized as an essential part of rehabilitation programs and overall CF care. Regular exercise training is associated with improved aerobic and anaerobic capacity, higher pulmonary function, and enhanced airway mucus clearance. Furthermore, patients with higher aerobic fitness have improved survival. Aerobic and anaerobic training may have different effects, whereas the combination of both has been reported to be beneficial in CF. However, exercise training remains underused and not always incorporated into routine CF management. We propose that an active lifestyle and exercise training are an efficacious part of regular CF patient management. The plagiarized section is being replaced by the following statement: Exercise is an important part of the care and treatment of patients with CF (3) and results in improved physical fitness and improved lung function. Furthermore, higher aerobic fitness is associated with better survival (26,28). However, exercise testing, training, and physical activity promotion continues to be underutilized in CF clinics (45). Also, ventilatory efficiencymay be improved in patientswith CF as a result of training.Given its high trainability and relative importance in the prediction of mortality, we recommend that future studies in CF not only make note of the more commonly reported exercise outcomes but also pay special attention to relevant ventilatory (efficiency) variables like peak O_E/O₂. In the replacement wording, reference 45 is the Williams et al. article (2).