Effects of Caffeine on Methacholine Challenge and Exhaled Nitric Oxide Levels.

Not Applicable

Completed

• Conditions: Asthma
• Interventions: Other: caffeine; Other: No caffeine

• Registration Number: NCT01057875
• Lead Sponsor: University of Saskatchewan

Brief Summary

To investigate whether or not the ingestion of caffeine with alter airway responsiveness to methacholine and/or change the level of exhaled nitric oxide.

Detailed Description

Not available

Study Timeline

• Study Start: 2010-01
• Study First Submitted: 2010-01-26
• Study First Submitted QC: 2010-01-26
• Study First Posted: 2010-01-27
• Primary Completion: 2010-02
• Study Completion: 2010-02
• Status Verified: 2010-10
• Last Update Submitted: 2010-10-05
• Last Update Posted: 2010-10-07

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 15

Inclusion Criteria

• clinical diagnosis of asthma
• FEV1 greater than 65%

Exclusion Criteria

• asthma is poorly controlled
• presence of other airway disease (e.g. COPD)

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: CROSSOVER

Arm && Interventions

Group	Intervention	Description
coffee with caffeine	caffeine	-
decaffeinated coffee	No caffeine	Starbuck's Grande Pike Roast Decaf

Primary Outcome Measures

Name	Time	Method
methacholine pc20	1 hour post ingestion

Trial Locations

Locations (1)

University of Saskatchewan; 🇨🇦 Saskatoon, Saskatchewan, Canada