Broeders, M E Verapamil causes decreased diaphragm endurance but no decrease of nocturnal O(2) saturation in patients with chronic obstructive pulmonary disease. [electronic resource] - European journal of clinical pharmacology Jan 2000 - 729-32 p. digital Publication Type: Clinical Trial; Controlled Clinical Trial; Journal Article ISSN: 0031-6970 Standard No.: 10.1007/s002280050005 doi Subjects--Topical Terms: AgedBlood Gas AnalysisCalcium Channel Blockers--pharmacologyCircadian Rhythm--physiologyCross-Over StudiesDiaphragm--drug effectsDouble-Blind MethodDrug InteractionsHumansLung Diseases, Obstructive--metabolismMiddle AgedMuscle Contraction--drug effectsMuscle, Skeletal--drug effectsOxygen--metabolismPlacebosTheophylline--pharmacologyVasodilator Agents--pharmacologyVerapamil--pharmacology