Please select the eligibility criteria that correspond to the clinical trial below.
Title: Acute Effects of Combined Exercise and Oscillatory Positive Expiratory Pressure Therapy on Sputum Properties and Lung Diffusion Capacity in Cystic Fibrosis: a Randomized Crossover Trial
Brief Summary: The investigators aim to compare a single bout of moderately intense cycling exercise incorporating Flutter® breathing maneuvers with a single bout of moderately intense cycling exercise alone on sputum viscoelasticity (primary endpoint) and the diffusion capacity of the lungs in adult patients with cystic fibrosis.

The investigators further aim to analyze the short-term variability of resting diffusion capacity of carbon monoxide (DLCO) and nitric oxide (DLNO) in patients with cystic fibrosis.


Options:
A: Inclusion Criteria:

* Confirmed diagnosis of CF based on either two CF-causing mutations and/or a sweat chloride concentration during two tests of \> 60 mmol/l
* Patients that are able to provide sputum samples
* Adult age ≥ 18 years

Exclusion Criteria:

* Unstable condition affecting participation in the exercise experiments (i.e., major hemoptysis or pneumothorax within the last 3 months, acute exacerbation and iv-antibiotics during the last 4 weeks, unstable allergic bronchopulmonary aspergillosis, listed for lung transplantation, major musculoskeletal injuries such as fractures or sprains during the last 2 months, others according to the impression of the doctor)
* Cardiac arrhythmias with exercise
* Requiring additional oxygen with exercise
* Colonization with Burkholderia cenocepacia
* Status post lung transplantation
B: Inclusion Criteria:

* Homozygous for the F508del-CFTR mutation
* Confirmed diagnosis of CF defined as a sweat chloride value ≥60 mmol/L by quantitative pilocarpine iontophoresis
* Stable CF disease as judged by the investigator
* Forced expiratory volume in 1 second (FEV1) at least 40% and not greater than 90% of predicted

Exclusion Criteria:

* History of any comorbidity that might confound the results of the study, interfere with the use of cardiopulmonary exercise tests (CPETs) as an assessment, or pose an additional risk in administering study drug to the subject
* Any previous exposure to LUM or IVA
* History of cardiac arrhythmia, ischemic heart disease, congestive heart failure, or other clinically significant cardiac condition, or medical condition requiring chronic use of a beta blocker, non-dihydropyridine calcium channel blocker, or other cardiac medication known to affect exercise tolerance
* History of solid organ or hematological transplantation
* For subjects under 18 years of age at Screening, except those who have had bilateral lens removal, selected findings on a screening ophthalmologic examination will be exclusionary
* Using or expected to require any concomitant medication that is prohibited in this study
* History of alcohol or drug abuse, as deemed by the investigator, in the past year, including but not limited to cannabis, cocaine, and opiates
* Participation in an investigational drug study within 30 days before the Screening Visit
* Pregnant or nursing females; males with a female partner who is pregnant or nursing
* Colonization with organisms associated with a more rapid decline in pulmonary status
C: Inclusion Criteria:

* Diagnosis of cystic fibrosis, according to the Brazilian Guidelines for diagnosis and treatment of CF;
* Prepubertal or pubertal, according to the Tanner scale
* Both sex.

Exclusion Criteria:

* Inability to perform the protocol established to the study;
* To be unable to understand and / or perform procedures.
* Exacerbation of the clinical picture, defined as modification and / or addition of antibiotic.
* To be pregnant.
D: Inclusion Criteria:

* Cystic fibrosis diagnosis confirmed by 2 positive sudoriparous diagnostic tests
* Age : 7 to 17 years
* Capacity to expectorate
* Clinically stable
* Ability to pedal on a bike and to respect orders for physical session

Exclusion Criteria:

* Haemoptysis \> 50ml
* Permanent non-invasive ventilation
* Respiration or digestive evolutive clinical abnormality
* Exacerbation

Answer: A