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Is exercise induced asthma considered a comorbidity? 

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Increased exposure to air pollution during exercise does not outweigh beneficial effects of physical activity on the risk of asthma and COPD.
These experiments suggest that the type of exercise influences the severity of exercise-induced asthma even under conditions of the same metabolic stress and respiratory heat loss.
from the exercise questionnaire suggested that asthmatics perceive their disease as a limiting factor to improved aerobic fitness and that they lack adequate knowledge about asthma and exercise.
The findings of this study suggest that the mechanism of exercise-induced asthma may be multifactorial, and the relative importance of each factor may vary in different patients.
In addition, a beneficial effect of training on exercise-induced asthma is demonstrated.

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