title: Clinical usefulness of rate adaptive pacing systems: what should we assess?
authors.forename: C P
authors.initials: CP
authors.lastname: Lau
authors.forename: S K
authors.initials: SK
authors.lastname: Leung
mesh_terms: D002304:Cardiac Pacing, Artificial / Q000379:methods; D002320:Cardiovascular Physiological Phenomena; D015444:Exercise; D006339:Heart Rate; D006801:Humans