Alt, E U Intrinsic heart rate response as a predictor of rate-adaptive pacing benefit. [electronic resource] - Chest Apr 1995 - 925-30 p. digital Publication Type: Clinical Trial; Journal Article; Randomized Controlled Trial ISSN: 0012-3692 Standard No.: 10.1378/chest.107.4.925 doi Subjects--Topical Terms: Age FactorsAnaerobic ThresholdCardiac Pacing, Artificial--methodsExercise TestFemaleHeart RateHumansMaleMiddle AgedOxygen ConsumptionSex Factors