This randomized , partially blinded , single-dose , placebo - and positive - ( moxifloxacin ) controlled , three-way cross-over study investigated the effect of a single inhaled supra-therapeutic dose ( @-fold clinical dose in COPD patients ) of @ g glycopyrronium on the Fridericia-corrected QT interval ( QTcF ; primary objective ) , Bazettcorrected QT interval ( QTcB ) , heart rate , blood pressure , pharmacokinetics ( PK ) , safety , and tolerability .