title: It's not funny: How changes in If limit maximum heart rate with aging.
authors.affiliation: Department of Neuroscience, University of Wisconsin School of Medicine and Public Health, Madison, WI 53705 garobert@wisc.edu.|Cardiovascular Research Center, University of Wisconsin School of Medicine and Public Health, Madison, WI 53705.
authors.forename: Gail A
authors.identifier: 0000-0003-4694-5790
authors.initials: GA
authors.lastname: Robertson
mesh_terms: D000242:Cyclic AMP; D006339:Heart Rate; D032342:Muscle Cells; D010138:Pacemaker, Artificial; D012849:Sinoatrial Node
chemical_list: D000242:Cyclic AMP