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Exercise-induced Bronchoconstriction Diagnostics: Impact of a Repeated Exercise Challenge Test

This study has been completed.
Sponsor:
ClinicalTrials.gov Identifier:
NCT01214551
First Posted: October 5, 2010
Last Update Posted: February 9, 2017
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
Collaborator:
Klinikk for allergi og luftveissykdommer
Information provided by (Responsible Party):
Norwegian University of Science and Technology
September 23, 2010
October 5, 2010
February 9, 2017
August 2010
March 2011   (Final data collection date for primary outcome measure)
Forced expiratory volume in one second (FEV1) [ Time Frame: up to 4 weeks ]
Forced expiratory volume in one second (FEV1) [ Time Frame: 01.09.10-01.07.2011 ]
Complete list of historical versions of study NCT01214551 on ClinicalTrials.gov Archive Site
  • Forced vital capacity (FVC) [ Time Frame: up to 4 weeks ]
  • Forced expiratory flow at 50 % FVC(FEF50%) [ Time Frame: up to 4 weeks ]
  • Fractional exhaled nitric oxide (FENO) [ Time Frame: up to 4 weeks ]
  • Total lung capacity (TLC) [ Time Frame: up to 4 weeks ]
  • Specific airway resistance (sRAW) [ Time Frame: up to 4 weeks ]
  • Specific airway conductance (sGAW) [ Time Frame: up to 4 weeks ]
  • Residual volume (RV) [ Time Frame: up to 4 weeks ]
  • Diffusing capacity (TLCO) [ Time Frame: up to 4 weeks ]
  • Maximum voluntary ventilation (MVV) [ Time Frame: up to 4 weeks ]
  • Breathing reserve (BR) [ Time Frame: up to 4 weeks ]
  • Respiratory exchange ration (RER) [ Time Frame: up to 4 weeks ]
  • Oxygen uptake peak (VO2 peak) [ Time Frame: up to 4 weeks ]
  • Heart rate peak (HR peak) [ Time Frame: up to 4 weeks ]
  • Ventilation peak (VE peak) [ Time Frame: up to 4 weeks ]
  • Forced vital capacity (FVC) [ Time Frame: 01.09.10-01.07.2011 ]
  • Forced expiratory flow at 50 % FVC(FEF50%) [ Time Frame: 01.09.10-01.07.2011 ]
  • Fractional exhaled nitric oxide (FENO) [ Time Frame: 01.09.10-01.07.2011 ]
  • Total lung capacity (TLC) [ Time Frame: 01.09.10-01.07.2011 ]
  • Specific airway resistance (sRAW) [ Time Frame: 01.09.10-01.07.2011 ]
  • Specific airway conductance (sGAW) [ Time Frame: 01.09.10-01.07.2011 ]
  • Residual volume [ Time Frame: 01.09.10-01.07.2011 ]
  • Diffusing capacity (TLCO) [ Time Frame: 01.09.10-01.07.2011 ]
  • Maximum voluntary ventilation [ Time Frame: 01.09.10-01.07.2011 ]
  • Breathing reserve (BR) [ Time Frame: 01.09.10-01.07.2011 ]
  • Respiratory exchange ration (RER) [ Time Frame: 01.09.10-01.07.2011 ]
  • Oxygen uptake peak (VO2 peak) [ Time Frame: 01.09.10-01.07.2011 ]
  • Heart rate peak [ Time Frame: 01.09.10-01.07.2011 ]
  • Questionnaire [ Time Frame: 01.09.10-01.07.2011 ]
  • Ventilation peak (VE peak) [ Time Frame: 01.09.10-01.07.2011 ]
Not Provided
Not Provided
 
Exercise-induced Bronchoconstriction Diagnostics: Impact of a Repeated Exercise Challenge Test
Exercise-induced Bronchoconstriction Diagnostics: Impact of a Repeated Exercise Challenge Test
The purpose of this study is to increase the knowledge of the possible diagnostic effect of exercise induced bronchoconstriction performing a repeated exercise challenge test.
Prior studies have shown that the intensity influences the sensitivity of exercise challenge tests (ECT) and that a heart rate-based protocol does not ensure sufficient exercise intensity to induce bronchoconstriction. It is not common clinical practice to perform a pre ECT to establish maximal heart rate or maximal oxygen uptake. The heart rate formula recommended by ATS (HRmax= 220−age) is usually applied to determine recommended intensity of the ECT. Conducting a second ECT, based on the knowledge of the first test, introduce the possibility to adjust the intensity on an individual basis. In addition, based on clinical experience, patients may seem reluctant to perform maximal the first time they undergo an ECT on a treadmill. The hypothesis is that patients are less reluctant to perform maximal the second time they undergo the test when they are more accustomed to the procedure and the treadmill by itself.
Observational
Observational Model: Other
Time Perspective: Prospective
Not Provided
Not Provided
Non-Probability Sample
Subjects referred to Klinikk for allergi og luftveissykdommer
Exercise Induced Bronchoconstriction
Not Provided
Not Provided
Angell MR, Augestad LB, Haugen TS, Frostad A, Grønnerød TA, Stensrud T. Exercise-induced bronchoconstriction diagnostics: Impact of a repeated exercise challenge test. Open Journal of Respiratory Diseases 4:55-63, 2014 http://file.scirp.org/pdf/OJRD_2014043017202072.pdf

*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
 
Completed
20
March 2011
March 2011   (Final data collection date for primary outcome measure)

Inclusion Criteria:

  • Referred to Klinikk for allergi og luftveissykdommer
  • Meet at least 3 out of 5 criteria (symptoms related to exercise):

    1. Cough during exercise or within 5 minutes after exercise
    2. Wheeze during exercise or within 5 minutes after exercise
    3. Heavy breathing, expiratory in particular, during exercise or within 5 minutes after exercise (duration 5 minutes or more)
    4. Improvement of physical fitness/breath is lacking despite of exercise intensification
    5. Chest tightness during or after exercise
  • Patients former diagnosed with-and treated for asthma who have symptoms of EIB are included in the study.

Exclusion Criteria:

  • Ongoing respiratory infection or recent respiratory infection, judged by the responsible doctor to be of importance of the result
  • The inability to perform an Exercise challenge test with maximum effort
Sexes Eligible for Study: All
16 Years to 45 Years   (Child, Adult)
No
Contact information is only displayed when the study is recruiting subjects
Norway
 
 
NCT01214551
2010/1551-4
No
Not Provided
Not Provided
Norwegian University of Science and Technology
Norwegian University of Science and Technology
Klinikk for allergi og luftveissykdommer
Principal Investigator: Liv B Augestad, Professor Norwegian University of Science and Technology
Norwegian University of Science and Technology
February 2017