Exercise Induced Asthma
Conditions
Brief summary
High school elite training programs are today more and more under development in several 'elite sport schools' in Belgium, in order to select and train future elite athletes already at young age. Little is known about the effects of sustained training on the potential development of asthma in adolescents during lung growth. It would be of great importance to be able to select the individuals at risk to develop exercise-induced asthma, already at the start of their enrollment in the 'elite sport school. This would allow physicians to follow their lung function parameters very closely and regularly; and, if necessary, start treatment early after the first signs of exercise-induced asthma.
Detailed description
Competitive swimmers, competitive indoor athletes and control individuals performing sports at a recreational level will be recruited for the study. They will perform a sport-specific training (swimmers and controls: swimming for 90 minutes, indoor athletes: basketball or volleyball for 90 minutes) Baseline measurements: * Airway inflammation upper and lower airways will be assessed by collection of nasal fluid (nasal sponge will be inserted in nostril for 5 minutes), Fraction of exhaled Nitric Oxide measurement and sputum induction. * Upper and lower airway symptoms will be assessed by questionnaires (SinoNasal Outcome Measure-22, Visual Analogue Score, Asthma Symptom Score and Juniper Score) * Allergy will be assessed by skin prick test (on skin) and immunocap test (in blood, 1 tube of 10 ml). * Lung function and nasal patency will be measured by spirometry and Peak Nasal Inspiratory Flow measurement. * Exercise induced bronchoconstriction will be assessed by eucapnic voluntary hyperventilation test. Measurements immediately after training: * Collection of nasal fluid * Assessment of upper airway symptoms (Visual Analogue Score) * Spirometry and Fraction of Exhaled Nitric Oxide measurement * Peak Nasal Inspiratory Flow measurement Measurements 24 hours after training: * Collection of nasal fluid * Assessment of upper airway symptoms (Visual Analogue Score) * Spirometry and Fraction of Exhaled Nitric Oxide measurement * Peak Nasal Inspiratory Flow measurement * Sputum induction * Venous puncture (1 tube of 10 ml)
Interventions
None listed
Sponsors
Universitaire Ziekenhuizen KU Leuven
Study design
Observational model
COHORT
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
14 Years to 25 Years
Healthy volunteers
Yes
Inclusion criteria
* Performing sports at national or international level (swimmers and indoor athletes)
Exclusion criteria
* Performing sport at recreational level (not more than 4 hours/week for healthy individuals)
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Measurement of airway inflammation | Baseline, immediately after and 24 hours after sport-specific training | Airway inflammation upper and lower airways will be assessed by collection of nasal fluid (nasal sponge will be inserted in nostril for 5 minutes), Fraction of exhaled Nitric Oxide measurement and sputum induction. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Measurement of exercise induced bronchoconstriction | baseline | Exercise induced bronchoconstriction will be assessed by eucapnic voluntary hyperventilation test. |
Other
| Measure | Time frame | Description |
|---|---|---|
| Detection of allergy | baseline | -Allergy will be assessed by skin prick test (on skin) and immunocap test (in blood, 1 tube of 10 ml). |
| Assessment of upper and lower airway symptoms | Baseline, immediately after and 24 hours after sport-specific training | -Upper and lower airway symptoms will be assessed by questionnaires (SinoNasal Outcome Measure-22, Visual Analogue Score, Asthma Symptom Score and Juniper Score) |
| Measurement of lung function and nasal patency | at baseline, immediately after and 24 hours sport-specific training | -Lung function and nasal patency will be measured by spirometry and Peak Nasal Inspiratory Flow measurement. |
Countries
Belgium
Outcome results
None listed