The primary objective of the trial is to evaluate the efficacy of fluticasone propionate/albuterol sulfate multidose dry powder inhaler with electronic module (Fp/ABS eMDPI). Secondary objectives are: * To evaluate the efficacy of Fp/ABS eMDPI administered four times daily * To evaluate the safety and tolerability of Fp/ABS eMDPI administered four times daily over four weeks * To investigate the pharmacokinetics of Fp/ABS eMDPI, ABS eMDPI and Fp eMDPI after administration of a single dose The planned study duration for each participant is approximately 10 weeks, excluding an optional prescreening visit.
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Change from Baseline forced expiratory volume in one second (FEV1) area under the effect curve over 4 weeks
Timeframe: Baseline, Week 4
Change from Baseline trough FEV1 at week 4
Timeframe: Baseline, Week 4