TREADMILL EXERCISE STUDY OF HEALTHY MALES IN A TOTAL COMMUNITY—TECUMSEH, MICHIGAN: CLINICAL AND ELECTROCARDIOGRAPHIC CHARACTERISTICS12
- 1 April 1970
- journal article
- research article
- Published by Oxford University Press (OUP) in American Journal of Epidemiology
- Vol. 91 (4) , 368-377
- https://doi.org/10.1093/oxfordjournals.aje.a121147
Abstract
Chiang, B. N., H. J. Montoye and D. A. Cunningham (Univ. of Michigan School of Public Health, Ann Arbor, Mich.). Treadmill exercise study of healthy males in a total community—Tecumseh, Michigan: Clinical and electrocardiographic characteristics. Amer. J. Epid., 1970, 97: 368–377.—In a total community, Tecumseh, Michigan, 1, 064 healthy males aged 10–69 underwent a maximal or near maximal treadmill exercise test. No serious complication or fatality occurred. Thirty-eight of the 1, 064 or 3.6% showed ischemic ST segment depression ≤1 mm during and/or after exercise. The prevalence of ischemic ST segment depression increased with age, but none occurred in 427 persons under the age of 29. Characteristic patterns of the ST segment in this group of healthy men are their transient nature and lack of chest pain in spite of this change. Ventricular premature beats during exerdse occurred in 6.5%; the prevalence parallels that of ischemic ST segment depression. Orthostatic T wave inversions and post-exercise giant T waves (100% or more increase in amplitude) are common findings among young persons under the age of 40.Keywords
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