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Exercise-induced asthma prophylaxis in athletes using inhaled nedocromil sodium
Allergologia Et Immunopathologia
|March 1, 1996
Summary
Nedocromil sodium effectively prevents exercise-induced asthma (EIA) in athletes. A single 4mg dose before exercise showed significant protection, with sustained administration offering even greater benefits.
Area of Science:
- Pulmonology
- Sports Medicine
- Pharmacology
Background:
- Exercise-induced asthma (EIA) is a common condition affecting athletes.
- Nedocromil sodium (NS) is a potential prophylactic agent for EIA.
- Evaluating optimal dosing strategies for NS in EIA management is crucial.
Purpose of the Study:
- To assess the efficacy of two Nedocromil sodium (NS) dosages for exercise-induced asthma (EIA) prophylaxis.
- To compare the protective effects of a single pre-exercise dose versus a sustained administration regimen of NS.
Main Methods:
- An open-label, comparative, cross-over study involving 13 athletes (12-38 years old) with EIA.
- Pulmonary function (FEV1) was measured via spirometry before and at multiple time points after treadmill tests.
- Interventions included a single 4mg NS inhalation pre-exercise and a four-week regimen of 4mg NS every 8 hours plus a 4mg pre-exercise dose.
Main Results:
- Baseline exercise challenge resulted in a significant mean FEV1 decrease of 33.6%.
- The single 4mg NS dose reduced FEV1 decrease to 12.6%, achieving >30% protection in 81.5% of cases.
- Sustained NS administration further improved protection (9.7% FEV1 decrease, 77.2% of cases), though differences between regimens were not statistically significant.
Conclusions:
- Nedocromil sodium (4mg) administered pre-exercise is effective in preventing exercise-induced asthma.
- Sustained administration of Nedocromil sodium may offer enhanced prophylactic benefits for EIA.
- Further research could explore long-term efficacy and optimal dosing for Nedocromil sodium in EIA management.