Bone mineral density, pulmonary function, chronological age, and age at diagnosis in children and adolescents with cystic fibrosis.

Objective: To assess bone mineral density in patients with cystic fibrosis (CF), and to correlate it with possible intervening variables.

Methods: Children and adolescents diagnosed with CF, aged 6 to 18 years, followed at the outpatient clinic were included in the study. First, demographic data were collected and, subsequently, patients underwent a spirometric test.

The Borg scale is accurate in children and adolescents older than 9 years with cystic fibrosis.

Objective: To evaluate the accuracy of the modified Borg scale to estimate lung impairment, measured via FEV(1) in children and adolescents with cystic fibrosis.

Methods: This cross-sectional prospective study was conducted with cystic fibrosis patients, 6-18 y old. With the modified Borg scale we evaluated their subjective perceptions of dyspnea before and after submaximal exercises, and its correlation with lung function (spirometry), 6-min walk test (6MWT), and nutritional status according to body mass index.