Effectiveness of Ipratropium Bromide in Preventing Exercise-induced Bronchoconstriction in Athletes (STAMINA)

This will be a double-blind placebo-controlled study in which we plan to study 40 competitive endurance athletes. We will conduct an exercise test to evaluate maximal oxygen uptake and 2 exercise challenge tests to provoke EIA. Prior to the exercise challenge tests the athletes will randomly receive inhaled placebo or inhaled ipratropium bromide. We will compare the athletes' airway response to the exercise challenge with and without the active drug.

Study Overview

• Status: Completed
• Conditions: Bronchospasm, Exercise-Induced
• Intervention / Treatment: Drug: Placebo; Drug: ipratropium bromide

Detailed Description

Exercise-induced asthma (EIA) is common and often unrecognized among endurance athletes. The mechanisms of asthma appear to be different between athletes and non-athletes, in that the occurrence of asthma is higher among endurance athletes and seems to be promoted by training. This suggests that factors inherent to athleticism, such as the parasympathetic nervous system, which has been shown to change with endurance training and is known to lead to narrowing of the airways, may be involved with the development of asthma in athletes. Although asthma mechanisms and treatments have been extensively studied in classic asthmatics, there is very limited data in athletes.

This will be a double-blind placebo-controlled study in which we plan to study 40 competitive endurance athletes. We will conduct an exercise test to evaluate maximal oxygen uptake and 2 exercise challenge tests to provoke EIA. Prior to the exercise challenge tests the athletes will randomly receive inhaled placebo or inhaled ipratropium bromide. We will compare the athletes' airway response to the exercise challenge with and without the active drug.

If ipratropium bromide proves to prevent EIA in athletes, this drug may be appropriate and effective to target EIA in this population. The results of this study may lead to improved clinical management of athletes with asthma.

• Study Type: Interventional
• Enrollment (Actual): 20
• Phase: Phase 4

Contacts and Locations

Study Locations

• United States
  • California
    • San Francisco, California, United States, 94143
      • University of California, San Francisco

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 13 years and older (Child, Adult, Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• Athletes > 13 years of age

Exclusion Criteria:

• History of cardiac complaints (chest pain, shortness of breath, palpitations, dyspnea on exertion).
• History of cardiac disease or taking cardioactive medications.
• History of smoking.
• History of glaucoma.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Crossover Assignment
• Masking: Quadruple

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Placebo Comparator: placebo; placebo 2 puffs prior to exercise challenge	Drug: Placebo; Inhaled placebo administered before exercise.
Active Comparator: ipratropium bromide; ipratropium bromide HFA 2 puffs prior to exercise challenge	Drug: ipratropium bromide; Inhaled ipratropium bromide administered before exercise.; Other Names: atrovent

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Time Frame
Spirometry and Specific Airway Conductance Measured by Body Plethysmography Before and After Exercise Challenge After Randomized Administration of Either Inhaled Ipratropium Bromide or Inhaled Placebo	The outcome measures will be assessed over an expected average of 6 months.

Secondary Outcome Measures

Outcome Measure	Time Frame
Specific IgE Measurements	The outcome measures will be assessed over an expected average of 6 months.

Collaborators and Investigators

• Sponsor: University of California, San Francisco
• Investigators: Principal Investigator: Mona Luke-Zeitoun, Assistant Clinical Professor (Volunteer)

Study record dates

Study Major Dates

• Study Start: December 1, 2012
• Primary Completion (Actual): December 1, 2014
• Study Completion (Actual): December 1, 2014

Study Registration Dates

• First Submitted: September 13, 2012
• First Submitted That Met QC Criteria: September 21, 2012
• First Posted (Estimate): September 24, 2012

Study Record Updates

• Last Update Posted (Actual): June 5, 2020
• Last Update Submitted That Met QC Criteria: May 20, 2020
• Last Verified: May 1, 2020

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Respiratory Tract Diseases; Immune System Diseases; Hypersensitivity, Immediate; Bronchial Diseases; Respiratory Hypersensitivity; Hypersensitivity; Asthma; Bronchial Spasm; Asthma, Exercise-Induced; Physiological Effects of Drugs; Neurotransmitter Agents; Molecular Mechanisms of Pharmacological Action; Autonomic Agents; Peripheral Nervous System Agents; Cholinergic Antagonists; Cholinergic Agents; Anticonvulsants; Bronchodilator Agents; Anti-Asthmatic Agents; Respiratory System Agents; Bromides; Ipratropium
• Other Study ID Numbers: 12-09621

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No
• product manufactured in and exported from the U.S.: No