# Determining Baseline Respiratory Duty Cycles in Subjects With and Without Airway Hyperresponsiveness

> **NCT04001465** · NA · COMPLETED · sponsor: **University of Saskatchewan** · enrollment: 34 (actual)

## Conditions studied

- Airway Hyper Responsiveness

## Interventions

- **PROCEDURE:** Volumetric methacholine challenge unmodified
- **PROCEDURE:** Modified volumetric methacholine challenge

## Key facts

- **NCT ID:** NCT04001465
- **Lead sponsor:** University of Saskatchewan
- **Sponsor class:** OTHER
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2019-05-14
- **Primary completion:** 2019-06-30
- **Final completion:** 2019-06-30
- **Target enrollment:** 34 (ACTUAL)
- **Last updated:** 2020-03-27


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04001465

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04001465, "Determining Baseline Respiratory Duty Cycles in Subjects With and Without Airway Hyperresponsiveness". Retrieved via AI Analytics 2026-06-22 from https://api.ai-analytics.org/clinical/NCT04001465. Licensed CC0.

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