Trial · NCT07882407
A Behavioral Circuit Breathing Training Intervention on Smoking Cessation and Respiratory Function Among Youth Who Use E-cigarettes
NCT07882407, Not applicable, Recruiting, Chulalongkorn University
3 sourcestrials-2026-11-12-0.5.0
Cite this record
ConductScience Library. A Behavioral Circuit Breathing Training Intervention on Smoking Cessation and Respiratory Function Among Youth Who Use E-cigarettes. Trials, record NCT07882407. Release trials-2026-11-12-0.5.0, 12 Nov 2026. https://conductscience.org/library/trials/NCT07882407
On this page
Trial
As registered on ClinicalTrials.gov, in the graph's capture of the registry.
- Title
- A Behavioral Circuit Breathing Training Intervention on Smoking Cessation and Respiratory Function Among Youth Who Use E-cigarettes
- NCT number
- NCT07882407
- Status
- Recruiting
- Phases
- Not applicable
- Enrollment
- 45 participants, estimated
- Lead sponsor
- Chulalongkorn University
- Conditions
- E Cigarette Use
- Interventions
- Circuit Breathing Intervention, Diaphragmatic Breathing
- First posted
- 2026-10-20
- Last updated
- 2026-10-20
Source ClinicalTrials.gov
Registered outcomes13
Each outcome the trial registered, primary first, in ClinicalTrials.gov's words.
| List | Outcome | Time frame | Description |
|---|---|---|---|
| Primary | Tobacco Craving Questionnaire-Short Form (TCQ-SF) Score | Change from baseline Tobacco Craving Questionnaire-Short Form (TCQ-SF) score at 6 weeks. | Craving will be assessed using the 12-item TCQ-SF. The questionnaire is a self-report measure using a 7-point Likert scale, ranging from 1 (strongly disagree) to 7 (strongly agree). Higher scores indicate greater tobacco craving. |
| Primary | Smoking Cessation Status and Behaviors | Change from baseline smoking cessation status and behaviors at 6 weeks. | This self-report questionnaire consists of seven items assessing 7-day point-prevalence abstinence, duration of smoking cessation, smoking cessation behaviors, and attempts to quit smoking. |
| Primary | Penn State Electronic Cigarette Dependence Index Score | Change from baseline Penn State Electronic Cigarette Dependence Index score at 6 weeks. | E-cigarette dependence will be assessed using the Penn State Electronic Cigarette Dependence Index. The scale consists of 10 items, with a maximum total score of 20. |
| Primary | Pulmonary function (Forced Expiratory Volume in one second; FEV1) | Change from baseline FEV1 at 6 weeks. | The participants were instructed to sit on a chair and wear a nose clip. The researcher provided them with a detailed set of instructions to ensure they performed the maneuver correctly according to guidelines of the American Thoracic Society (ATS). Prior to demonstrating forced inspiration and expiration, the participants were asked to perform three cycles of slow normal breathing as part of the FVC maneuver. FEV1 (L) will be reported in liter (L). |
| Primary | Pulmonary function (The ratio of the forced expiratory volume in the first one second to the forced vital capacity of the lungs; FEV1/FVC) | Change from baseline FEV1/FVC at 6 weeks. | The participants were instructed to sit on a chair and wear a nose clip. The researcher provided them with a detailed set of instructions to ensure they performed the maneuver correctly according to guidelines of the American Thoracic Society (ATS). Prior to demonstrating forced inspiration and expiration, the participants were asked to perform three cycles of slow normal breathing as part of the FVC maneuver. FEV1/FVC will be reported in percent (%). |
| Primary | Pulmonary function (Maximal voluntary ventilation; MVV) | Change from baseline MVV at 6 weeks. | The participants were instructed to sit on a chair and wear a nose clip. The researcher provided them with a detailed set of instructions to ensure they performed the maneuver correctly according to guidelines of the American Thoracic Society (ATS). During the MVV maneuver, participants were instructed to demonstrate in rapid and forceful inhalation and exhalation for a duration of 10 seconds. MVV will be reported in liter per minute (L/min). |
| Primary | Pulmonary function (Forced expiratory flow at 25-75%) | Change from baseline FEF 25-75% at 6 weeks. | The participants were instructed to sit on a chair and wear a nose clip. The researcher provided them with a detailed set of instructions to ensure they performed the maneuver correctly according to guidelines of the American Thoracic Society (ATS). Prior to demonstrating forced inspiration and expiration, the participants were asked to perform three cycles of slow normal breathing as part of the FVC maneuver. |
| Primary | Respiratory muscle strength | Change from baseline Maximal Inspiratory Pressure (MIP) and Maximal Expiratory Pressure (MEP) at 6 weeks. | Respiratory muscle strength was evaluated by measuring Maximal Inspiratory Pressure (MIP) and Maximal Expiratory Pressure (MEP) in centimeters of water (cmH2O). The participants were seated and utilized a portable handheld mouth pressure meter (MicroRPM), along with a nose clip. To assess MIP, participants were instructed to exhale until they emptied their lungs at the point of functional residual capacity (FRC). Participants held the device to their mouth and forcefully inhaled for 1-2 seconds. For the measurement of MEP, participants were directed to inhale until their lungs were completely filled with air, starting from the total lung capacity (TLC) point. Participants were asked to maintain the device on their mouth and forcefully exhaled for 1-2 seconds. |
| Secondary | WHOQOL-BREF Score | Change from baseline WHOQOL-BREF Score at 6 weeks. | Quality of life will be assessed using the World Health Organization Quality of Life questionnaire (WHOQOL). Participants will complete the 26-item questionnaire independently using an electronic device through Google Forms. Completion will take approximately 10 minutes. |
| Secondary | Pittsburgh Sleep Quality Index (PSQI) Global Score | Change from baseline Pittsburgh Sleep Quality Index (PSQI) Global Score at 6 weeks. | Sleep quality will be assessed using the Pittsburgh Sleep Quality Index (PSQI). Participants will complete the 19-item questionnaire independently using an electronic device through Google Forms. Completion will take approximately 10 minutes. |
1 to 10 of 13Source ClinicalTrials.gov
See all 13 registered outcomesOutcomes0
Each outcome the trial posted results for, in ClinicalTrials.gov's words.
None in this release.
Results by group0
Each measurement the trial posted, group by group, in the words and numbers it posted.
None in this release.
Participant flow0
How many started, completed or left each group, period by period.
None in this release.
Adverse events0
Each adverse event the trial posted, group by group: the participants affected out of those at risk.
None in this release.
Adverse event totals0
The totals the trial posted for each group.
None in this release.
Papers0
The papers the trial lists on ClinicalTrials.gov.
None in this release.
Grants0
The grants NIH RePORTER links to the trial, newest funded first: NIH's, and some of AHRQ's, CDC's, FDA's and VA's. Each shows its title, principal investigators, organization and funder in its newest year.
None in this release.
Trial comparisons0
Comparisons of the trial's two groups, calculated by ConductScience from the counts it posted.
None in this release.
Tests0
The ConductCognition tests this trial's registered outcomes name, as ScienceGraph matched them in trial-tests-2026-11-12-0.2.1.
None in this release.
Data dates
The day each source was copied for this release.
Sources 3
- ClinicalTrials.gov's posted results, through CTTI's AACTFreely available. Acknowledgement requested
- ClinicalTrials.govNo license stated
- NIH RePORTER's clinical studies and project filesPublic domain
Each source's terms
- ClinicalTrials.gov's posted results, through CTTI's AACTClinicalTrials.gov data via Aggregate Analysis of ClinicalTrials.gov (AACT), CTTI. CTTI makes its materials freely available and requests acknowledgement. https://aact.ctti-clinicaltrials.org/documentation/299
- ClinicalTrials.govnone stated
- NIH RePORTER's clinical studies and project filesPublic domain (NIH RePORTER)
ClinicalTrials.gov's data carry an international copyright outside the United States: https://clinicaltrials.gov/about-site/terms-conditions.
For software
Read this trial from software.
The record and each of its lists are JSON, twenty rows a page. No key.
GET https://conductscience.org/api/trials/v1/NCT07882407
GET https://conductscience.org/api/trials/v1/NCT07882407/registered