title: High heart rate variability, marker of healthy longevity.
authors.forename: Donald H
authors.initials: DH
authors.lastname: Singer
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000375:Aging; D002648:Child; D003430:Cross-Sectional Studies; D015716:Electrocardiography, Ambulatory; D006339:Heart Rate; D006801:Humans; D008136:Longevity; D008875:Middle Aged; D010275:Parasympathetic Nervous System; D012016:Reference Values