{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,28]],"date-time":"2026-04-28T15:18:05Z","timestamp":1777389485510,"version":"3.51.4"},"reference-count":12,"publisher":"SAGE Publications","issue":"3","license":[{"start":{"date-parts":[[1980,5,1]],"date-time":"1980-05-01T00:00:00Z","timestamp":325987200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Am J Sports Med"],"published-print":{"date-parts":[[1980,5]]},"abstract":"<jats:p>Physical examinations and electrocardiograms were performed on 50 young men in preseason training for Pop Warner Foot ball. Functional murmurs were found in 52%. The majority of electrocardiographic findings were within the accepted normal range for nonathletes but some were consistent with findings in trained athletes. Awareness of these normal variations is im portant for proper assessment of prospective and participating athletes.<\/jats:p>","DOI":"10.1177\/036354658000800311","type":"journal-article","created":{"date-parts":[[2007,6,21]],"date-time":"2007-06-21T20:46:52Z","timestamp":1182458812000},"page":"200-201","source":"Crossref","is-referenced-by-count":1,"title":["Cardiologic assessment in participants of Pop Warner Junior League football"],"prefix":"10.1177","volume":"8","author":[{"given":"Grace S.","family":"Wolff","sequence":"first","affiliation":[{"name":"Department of Pediatrics (Pediatric Cardiology), Albany Medical Center Hospital, Albany, New York"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Matthew","family":"Farina","sequence":"additional","affiliation":[{"name":"Department of Pediatrics (Pediatric Cardiology), Albany Medical Center Hospital, Albany, New York"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Robert","family":"Rinaldi","sequence":"additional","affiliation":[{"name":"Department of Pediatrics (Pediatric Cardiology), Albany Medical Center Hospital, Albany, New York"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[1980,5,1]]},"reference":[{"key":"atypb1","unstructured":"Rose KD: Relationship of cardiac problems to athlete participation. In Sport Medicine: Pathology, edited by O Ringertz. New York, MSS Information Corporation , 1973, pp 48-64"},{"key":"atypb2","unstructured":"Plas F.: Cardiac examination and fitness for sport. J Sport Med Phys Fitness 12: 139-142, 1972"},{"key":"atypb3","doi-asserted-by":"crossref","unstructured":"McClellan JT , Jokl E.: Congenital anomalies of coronary arteries as cause of sudden death associated with physical exertion. In Medicine and Sport, Exercise and Cardiac Death, edited by E Jokl and M Hebbelinck. Basel, S Karger, 1971, Vol 5, pp 91-98","DOI":"10.1159\/000430598"},{"key":"atypb4","doi-asserted-by":"crossref","unstructured":"James TN, Froggatt P., Marshall TK: Sudden cardiac death in young athletes. In Medicine and Sport, Exercise and Cardiac Death, edited by E Jokl and M Hebbelinck. Basel, S Karger, 1971, Vol 5, pp 102-111","DOI":"10.1159\/000430600"},{"key":"atypb5","doi-asserted-by":"crossref","unstructured":"Jokl E., Greenstein J.: Fatal coronary sclerosis in a boy of ten years. In Medicine and Sport, Exercise and Cardiac Death, edited by E Jokl and M Hebbelinck. Basel, S Karger, 1971, Vol 5, pp 64-66","DOI":"10.1159\/000430594"},{"key":"atypb6","doi-asserted-by":"crossref","unstructured":"Lichtman J., O'Rourke RS, Klein A., et al.: Electrocardiogram of the athlete. Arch Intern Med 132: 767-770, 1973","DOI":"10.1001\/archinte.132.5.763"},{"key":"atypb7","doi-asserted-by":"publisher","DOI":"10.1136\/hrt.32.2.160"},{"key":"atypb8","unstructured":"Venerando A. , Rulli V.: Frequency morphology and meaning of the electrocardiographic anomalies in Olympic marathon runners and walkers . J Sports Med Phys Fitness 4: 135-141, 1964"},{"key":"atypb9","doi-asserted-by":"publisher","DOI":"10.1161\/01.CIR.53.2.286"},{"key":"atypb10","unstructured":"Moss AJ, Adams FH: Problems of Blood Pressure in Childhood. Charles C Thomas , Springfield, IL, 1962"},{"key":"atypb11","unstructured":"Namin EP, Miller RA: The normal electrocardiogram and vectorcardiogram in children. In Electrocardiography in Infants and Children, edited by DE Cassels, RF Ziegler. New York, Grune and Stratton, 1966 , pp 99-108"},{"key":"atypb12","unstructured":"Wasserburger RH: The Normal and Abnormal Unipolar Electrocardiogram in Infants and Children. Baltimore, Williams and Wilkins Co, 1963, pp 1-61"}],"container-title":["The American Journal of Sports Medicine"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/036354658000800311","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/036354658000800311","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,4,28]],"date-time":"2026-04-28T09:47:39Z","timestamp":1777369659000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.sagepub.com\/doi\/10.1177\/036354658000800311"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1980,5]]},"references-count":12,"journal-issue":{"issue":"3","published-print":{"date-parts":[[1980,5]]}},"alternative-id":["10.1177\/036354658000800311"],"URL":"https:\/\/doi.org\/10.1177\/036354658000800311","relation":{},"ISSN":["0363-5465","1552-3365"],"issn-type":[{"value":"0363-5465","type":"print"},{"value":"1552-3365","type":"electronic"}],"subject":[],"published":{"date-parts":[[1980,5]]}}}