Respiratory Function and Oxygenation in Smokers and Non-smokers
For patients and families
In plain language
An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.
- What is being studied
- This is an observational study: the protocol does not assign a study treatment.
- Who it may be relevant to
- Registry conditions: Smoking, Tobacco. Basic parameters: 18 years — 65 years · All.
- What needs checking
- Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
- Where it takes place
- Turkey (Türkiye)
- Next step
- Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →
Unsure about the terms? Read our patient guide →
Official title
A Comparison of Respiratory Function, Exercise Capacity and Oxygenation Between Smokers and Non-smokers
Overview
This study aimed to compare respiratory function, exercise capacity, and intercostal muscle oxygenation in healthy smokers and non-smokers.
Primary outcome measures
- Forced vital capacity [Time frame: 1st day]
- Forced expiratory volume in one second [Time frame: 1st day]
- Forced expiratory volume in one second/forced vital capacity ratio [Time frame: 1st day]
- Peak expiratory flow [Time frame: 1st day]
- Forced mid-expiratory flow [Time frame: 1st day]
- Inspiratory muscle strength [Time frame: 1st day]
- Exercise capacity [Time frame: 2nd day]
- Intercostal muscle oxygenation [Time frame: 2nd day]
Eligibility criteria
Inclusion Criteria (Smokers):
- According to the World Health Organization and ICD smoking addiction criteria, consuming at least one cigarette every day for the last year
- Volunteering to participate in research
- Able to walk and cooperate
Exclusion Criteria (Smokers):
- Having any cardiopulmonary disease
- Having a musculoskeletal problem that could affect the tests
- Failure to comply with tests
Inclusion Criteria (Non-smokers):
- According to the World Health Organization and ICD smoking addiction criteria, having never smoked or not having smoked in the last year
- Volunteering to participate in research
- Able to walk and cooperate
Exclusion Criteria (Non-smokers):
- Having any cardiopulmonary disease
- Having a musculoskeletal problem that could affect the tests
- Failure to comply with tests
Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.
Healthy volunteers: Yes
Study design
- Observational model
- Case-only
Study locations
Turkey (Türkiye) · 1 center
- Kirsehir Ahi Evran University — Kırşehir
Identifiers
NCT: NCT07027956 · 2025-08/88