Bronchodilators and exercise:
Methylxanthines such as theophylline, sympathomimetic agents (such as ephedra, pseudoephedrine, amphetamines and methamphetamines), cromolyn sodium, and corticosteroids such as prednisone or methylprednisolone increase exercise capacity in patients with limited bronchospasm. During rest and exercise, methylxanthines and sympathomimetic agents (albuterol) increase or have no effect on heart rate and blood pressure. Sympathomimetic agents may also increase blood pressure during rest and exercise. Cromolyn sodium and corticosteroids have no effect on either heart rate or blood pressure during rest and exercise.
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