Mehta, D Comparative evaluation of chronotropic responses of QT sensing and activity sensing rate responsive pacemakers. [electronic resource] - Pacing and clinical electrophysiology : PACE Oct 1988 - 1405-12 p. digital Publication Type: Comparative Study; Journal Article ISSN: 0147-8389 Standard No.: 10.1111/j.1540-8159.1988.tb04988.x doi Subjects--Topical Terms: AdultAgedAged, 80 and overAtrioventricular Node--physiologyElectrocardiographyEvaluation Studies as TopicHeart Conduction System--physiologyHeart RateHumansJoggingMiddle AgedPacemaker, ArtificialPhysical ExertionTime Factors