{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1362825896076404352.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1016/0002-8703(86)90467-9"}},{"identifier":{"@type":"URI","@value":"https://api.elsevier.com/content/article/PII:0002870386904679?httpAccept=text/xml"}},{"identifier":{"@type":"URI","@value":"https://api.elsevier.com/content/article/PII:0002870386904679?httpAccept=text/plain"}},{"identifier":{"@type":"PMID","@value":"3766372"}},{"identifier":{"@type":"NAID","@value":"30016701102"}}],"dc:title":[{"@value":"Daily variations of ECG and left ventricular parameters at exercise in patients with anginal attacks but normal coronary arteriograms"}],"description":[{"notation":[{"@value":"In 21 patients with typical exercise-induced anginal pain but normal coronary arteriograms (group N) and in 14 patients with angiographically proved coronary stenosis (group C), symptom-limited ergometer exercise ECG and radionuclide angiocardiography were performed twice on two different days. Exercise-induced ST changes showed larger variations between the two exercise tests in group N than in group C ([delta ST1-delta ST2]: 0.07 +/- 0.06 mV in group N, 0.03 +/- 0.03 mV in group C, p less than 0.05). Rate pressure product and left ventricular ejection fraction at exercise also showed larger variations between the two tests in group N than in group C (p less than 0.001, p less than 0.05, respectively). However, substantial overlaps existed in some cases in the two groups. In conclusion, some of the patients with exercise-induced anginal pain but normal coronary arteriograms may have a variable threshold of exertional chest pain probably caused by variation in coronary vascular tone, and the other patients may have a fixed threshold of chest pain caused by other mechanisms."}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1382825896076404361","@type":"Researcher","foaf:name":[{"@value":"Yasuro Sugishita"}]},{"@id":"https://cir.nii.ac.jp/crid/1382825896076404352","@type":"Researcher","foaf:name":[{"@value":"Susumu Koseki"}]},{"@id":"https://cir.nii.ac.jp/crid/1382825896076404358","@type":"Researcher","foaf:name":[{"@value":"Ryuichi Ajisaka"}]},{"@id":"https://cir.nii.ac.jp/crid/1382825896076404359","@type":"Researcher","foaf:name":[{"@value":"Mitsuo Matsuda"}]},{"@id":"https://cir.nii.ac.jp/crid/1382825896076404360","@type":"Researcher","foaf:name":[{"@value":"Kaname Iida"}]},{"@id":"https://cir.nii.ac.jp/crid/1382825896076404354","@type":"Researcher","foaf:name":[{"@value":"Keiji Iida"}]},{"@id":"https://cir.nii.ac.jp/crid/1382825896076404355","@type":"Researcher","foaf:name":[{"@value":"Iwao Ito"}]},{"@id":"https://cir.nii.ac.jp/crid/1382825896076404356","@type":"Researcher","foaf:name":[{"@value":"Motoo Ooshima"}]},{"@id":"https://cir.nii.ac.jp/crid/1382825896076404357","@type":"Researcher","foaf:name":[{"@value":"Tohru Takeda"}]},{"@id":"https://cir.nii.ac.jp/crid/1382825896076404353","@type":"Researcher","foaf:name":[{"@value":"Masayoshi Akisada"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"00028703"}],"prism:publicationName":[{"@value":"American Heart Journal"}],"dc:publisher":[{"@value":"Elsevier BV"}],"prism:publicationDate":"1986-10","prism:volume":"112","prism:number":"4","prism:startingPage":"728","prism:endingPage":"738"},"reviewed":"false","dc:rights":["https://www.elsevier.com/tdm/userlicense/1.0/","https://www.elsevier.com/legal/tdmrep-license"],"url":[{"@id":"https://api.elsevier.com/content/article/PII:0002870386904679?httpAccept=text/xml"},{"@id":"https://api.elsevier.com/content/article/PII:0002870386904679?httpAccept=text/plain"}],"createdAt":"2004-04-17","modifiedAt":"2025-09-03","foaf:topic":[{"@id":"https://cir.nii.ac.jp/all?q=Adult","dc:title":"Adult"},{"@id":"https://cir.nii.ac.jp/all?q=Male","dc:title":"Male"},{"@id":"https://cir.nii.ac.jp/all?q=Physical%20Exertion","dc:title":"Physical Exertion"},{"@id":"https://cir.nii.ac.jp/all?q=Blood%20Pressure","dc:title":"Blood Pressure"},{"@id":"https://cir.nii.ac.jp/all?q=Stroke%20Volume","dc:title":"Stroke Volume"},{"@id":"https://cir.nii.ac.jp/all?q=Middle%20Aged","dc:title":"Middle Aged"},{"@id":"https://cir.nii.ac.jp/all?q=Coronary%20Angiography","dc:title":"Coronary Angiography"},{"@id":"https://cir.nii.ac.jp/all?q=Coronary%20Vessels","dc:title":"Coronary Vessels"},{"@id":"https://cir.nii.ac.jp/all?q=Angina%20Pectoris","dc:title":"Angina Pectoris"},{"@id":"https://cir.nii.ac.jp/all?q=Electrocardiography","dc:title":"Electrocardiography"},{"@id":"https://cir.nii.ac.jp/all?q=Heart%20Rate","dc:title":"Heart Rate"},{"@id":"https://cir.nii.ac.jp/all?q=Exercise%20Test","dc:title":"Exercise Test"},{"@id":"https://cir.nii.ac.jp/all?q=Humans","dc:title":"Humans"},{"@id":"https://cir.nii.ac.jp/all?q=Female","dc:title":"Female"},{"@id":"https://cir.nii.ac.jp/all?q=Vascular%20Resistance","dc:title":"Vascular Resistance"},{"@id":"https://cir.nii.ac.jp/all?q=Radionuclide%20Angiography","dc:title":"Radionuclide Angiography"},{"@id":"https://cir.nii.ac.jp/all?q=Aged","dc:title":"Aged"}],"relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1390282680079319168","@type":"Article","relationType":["isReferencedBy","isCitedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Non-Invasive Assessment of Coronary Arterial Tone Using Trans-Thoracic Doppler Echocardiography"}]}],"dataSourceIdentifier":[{"@type":"CROSSREF","@value":"10.1016/0002-8703(86)90467-9"},{"@type":"CIA","@value":"30016701102"},{"@type":"OPENAIRE","@value":"doi_dedup___::aa7ba5246917ebed04117eb5c46475a6"},{"@type":"CROSSREF","@value":"10.1253/circj.70.459_references_DOI_V5PLwllbAjPzeoSWPbvpzqQ8nwJ"}]}