An observational study in Bronchiectasis Adult and Healthy Controls Group - Age and Sex-matched, sponsored by Hacettepe University. Recruiting at 1 site in Turkey (Türkiye). Open to participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-06-25.
Sponsored by Hacettepe University · Observational
Individuals with bronchiectasis exhibit productive cough and recurrent lung infections as well as reduced exercise capacity, physical activity level, and respiratory and peripheral muscle strength. 6-minute walk test (6MWT) is often used to assess exercise capacity in chronic lung diseases. 6MWT is recommended to be performed along a flat corridor, at least 30 m long, with low pedestrian traffic, on a hard surface. To overcome technical limitations during 6MWT, 6-minute stepper test (6MST) has been proposed to assess exercise capacity. Another test that provides information about exercise capacity is the 1-minute sit-to-stand test (1STS). To our knowledge, there is limited information about different exercise tests including 6MST and 1STS and cardiopulmonary responses to these tests in individuals with bronchiectasis. Therefore, this study aims to compare the responses to the 6MST between individuals with bronchiectasis and healthy controls and to investigate the relationships among 6MST, 6MWT, and 1STS responses and muscle strength.
404 studies on the registry are indexed under Bronchiectasis; 125 are open to participants now.
This study's planned enrollment of 60 is below the median of 160 across 137 observational studies indexed under Bronchiectasis.
Browse Bronchiectasis studies →Hacettepe University is the lead sponsor of 1,007 studies on the registry; 214 are open to participants now.
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Individuals with bronchiectasis and healthy controls
Bronchiectasis group - Inclusion criteria for the study:
Bronchiectasis group - Exclusion criteria:
Control group - Inclusion criteria for the study:
Control group - Exclusion criteria:
- Individuals with any known internal disease and those who do not volunteer to participate in the study will not be included in the study.
Individuals with bronchiectasis
Other: No intervention; Observational study
Other: No intervention; Observational study
No intervention
Maximal inspiratory pressure
Maximal inspiratory pressure (MIP) and will be measured using aa mouth-piece pressure measurement device. The measurement will be repeated three times so that there will be no difference of 10 cmH₂O or 10%, and the highest value will be used for analysis.
Time frame: 1st day
Maximal expiratory pressure
Maximal expiratory pressure (MEP) and will be measured using a mouth-piece pressure measurement device. The measurement will be repeated three times so that there will be no difference of 10 cmH₂O or 10%, and the highest value will be used for analysis.
Time frame: 1st day
Peripheral muscle strength
Peripheral muscle strength will be assessed using a portable dynamometer. The peripheral muscle strength test will be repeated three times for the right and left sides.
Time frame: 1st day
6-minute stepper test responses
6-minute stepper test will be performed, and the number of repetitions will be recorded. Cardiopulmonary responses before and after 6-minute stepper test will be recorded. 6-minute stepper test will be performed twice with 30 minutes apart.
Time frame: 1st day
1 minute sit-to-stand test responses
1 minute sit-to-stand test will be performed and the repetitions will be recoded. Cardiopulmonary responses will be recorded before and after the test.
Time frame: 1 minute sit-to-stand test will be performed and the repetitions will be recoded. Cardiopulmonary responses will be recorded before and after the test.
6-minute walk test responses
6-minute walk test will be performed, and the distance walked will be recorded. Cardiopulmonary responses before and after 6-minute walk test will be recorded.
Time frame: 1st day
Dyspnea
The modified Medical Research Council (mMRC) dyspnea scale will be used for dyspnea assessment. The mMRC dyspnea scale is a scale in which individuals choose the expression that best describes their dyspnea level from among 5 expressions related to shortness of breath. The higher the degree, the more severe the shortness of breath.
Time frame: 1st day
Charlson Comorbidity Index
Charlson Comorbidity Index (CCI) will be used to query accompanying comorbidities. Higher CCI scores indicate a greater burden of comorbid conditions.
Time frame: 1st day
Bronchiectasis Severity Index
Bronchiectasis Severity Index will be used to evaluate disease severity and prognosis in bronchiectasis. It is calculated by respiratory function, age, chronic colonization with Pseudomonas aeruginosa and other bacterial infections, shortness of breath and radiological extent of the disease. Based on Bronchiectasis Severity Index, bronchiectasis severity is defined as mild (0-4), moderate (5-8) and severe (≥9).
Time frame: 1st day
Forced vital capacity
Pulmonary function test using a spirometer will be performed. Forced vital capacity will be recorded.
Time frame: 1st day
Forced expiratory volume in one second
Pulmonary function test using a spirometer will be performed. Forced expiratory volume in one second will be recorded.
Time frame: 1st day
Forced expiratory volume in one second/forced vital capacity ratio
Pulmonary function test using a spirometer will be performed. Forced expiratory volume in one second/forced vital capacity ratio will be recorded.
Time frame: 1st day
Peak expiratory flow
Pulmonary function test using a spirometer will be performed. Peak expiratory flow will be recorded.
Time frame: 1st day
Forced mid-expiratory flow (FEF25-75)
Pulmonary function test using a spirometer will be performed. Forced mid-expiratory flow (FEF25-75) will be recorded.
Time frame: 1st day
Plan to share: No
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