ASTHMAXcel perception: a mobile health application for training in the perception of airflow limitation.

Objective: ASTHMAXcel Perception is an expansion of prior ASTHMAXcel mobile health applications for children with asthma. ASTHMAXcel Perception was evaluated for its ability to improve asthma control and perception of airflow limitation.

Methods: Patients with asthma ages 15-21 were randomized to receive ASTHMAXcel Perception with peak expiratory flow (PEF) feedback or usual care (UC).