title: Effect of exercise on the atrial recovery wave.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D004562:Electrocardiography; D005080:Exercise Test; D006325:Heart Atria; D006327:Heart Block / Q000503:physiopathology*; D006801:Humans; D008875:Middle Aged