# The Effect of Volitional Pursed-lips Breathing

> **NCT04663698** · NA · COMPLETED · sponsor: **Karl Josef Franke, PD DR med** · enrollment: 110 (actual)

## Conditions studied

- COPD

## Interventions

- **OTHER:** Baseline
- **OTHER:** MESH-Resistor 5
- **OTHER:** MESH-Resistor 10
- **OTHER:** Perforated Resistor 7
- **OTHER:** Perforated Resistor 11

## Key facts

- **NCT ID:** NCT04663698
- **Lead sponsor:** Karl Josef Franke, PD DR med
- **Sponsor class:** INDUSTRY
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2019-09-11
- **Primary completion:** 2021-01-08
- **Final completion:** 2021-03-30
- **Target enrollment:** 110 (ACTUAL)
- **Last updated:** 2021-09-14


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04663698

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04663698, "The Effect of Volitional Pursed-lips Breathing". Retrieved via AI Analytics 2026-07-10 from https://api.ai-analytics.org/clinical/NCT04663698. Licensed CC0.

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