1. The primary objective of this study is: * To evaluate the magnitude of the protective effect of the combination of budesonide and formoterol on an as-needed basis compared to the use of terbutaline as-needed on exercise induced bronchoconstriction in adults and adolescents with mild intermittent asthma 2. The secondary objectives of this study are: * To evaluate the magnitude of the protective effect of the combination of budesonide and formoterol as-needed compared to regular once daily use of budesonide plus terbutaline as-needed on exercise induced bronchoconstriction in adults and adolescents with mild intermittent asthma * To evaluate safety of budesonide/formoterol as-needed, terbutaline as-needed and regular use of budesonide + terbutaline as-needed as terms of adverse event
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
66
400 yg x 1
0.4 mg as-needed
160/4.5 yg as-needed
Research Site
Oslo, Norway
Research Site
Trondheim, Norway
Research Site
Gothenburg, Sweden
Research Site
Huddinge, Sweden
Research Site
Linköping, Sweden
Research Site
Luleå, Sweden
Research Site
Lund, Sweden
Research Site
Skene, Sweden
Research Site
Stockholm, Sweden
Research Site
Uppsala, Sweden
Percent Change in Maximum Post-exercise Forced Expiratory Volume in One Second (FEV1) Fall After 6 Weeks
FEV1
Time frame: Baseline and Visit 6
Percent Change in Maximum Post-exercise FEV1 Fall After 3 Weeks
FEV1
Time frame: Baseline and 3 weeks
Bronchial Responsiveness to Mannitol
Change in cumulative Mannitol dose in mg in patients with a positive mannitol provocation test at baseline (PD15)
Time frame: Baseline and 6 weeks
Concentration of Exhaled Nitric Oxide
Time frame: 6 weeks
Use of as Needed Medication
Mean number of as needed inhalations taken before exercise
Time frame: 6 weeks
Asthma Control Measured by a 5-item Asthma Control Questionnaire (ACQ5)
Change in overall ACQ5. ACQ5 measures asthma control and a lower values shows a better asthma control, a higher value is worse. A decrease in the ACQ5 shows an improvement during the treatment period. Range of ACQ5 is 0-5, with 0 as the best value and 5 as the worst value. Further information at www.qoltech.co.uk.
Time frame: Baseline e and 6 weeks
Diary Recording of Asthma Symptoms
Asthma symptoms during days with exercise
Time frame: 6 weeks
Number of Participants With an Adverse Event During the Study
Time frame: 6 weeks
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