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J Am Coll Cardiol, 2001; 37:705-710
© 2001 by the American College of Cardiology Foundation
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The warm-up effect protects against ischemic left ventricular dysfunction in patients with angina

Andrew D. Kelion, MA, MRCPa, Terence P. Webba, Maureen A. Gardnera, Oliver J. M. Ormerod, DM, FRCPa and Adrian P. Banning, MD, MRCPa

a Cardiology Department, John Radcliffe Hospital, Oxford, United Kingdom



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  		Figure 1 Mean regional EF for (a) ischemic (n = 70) and (b) nonischemic (n = 116) LV sectors before, during and after two exercise tests 30 min apart. Closed circles = first exercise test; open circles = second exercise test; error bars = standard error of the mean. *p < 0.05 versus equivalent time point for first test using Wilcoxon signed rank test with Bonferroni correction. EF = ejection fraction.

 


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  		Figure 2 Scatter plots illustrating changes in LV indices as functions of the change during Exercise 1. (a) Change in regional EF between baseline and 15 min after Exercise 1. y-intercept –0.3 (–1.4 to 0.8); slope 0.4 (0.3 to 0.5); R = 0.50. (b) Change in regional EF between Exercise 1 and Exercise 2. Ischemic sectors (closed circles): y-intercept 1.1 (–2.0 to 4.1); slope –0.4 (–0.7 to –0.2); R = –0.42. Nonischemic sectors (open circles): y-intercept –1.1 (–3.2 to 1.1); slope 0.1 (–0.2 to 0.3); R = 0.01. (c) Change in global EF between baseline and 15 min after Exercise 1. y-intercept 0.5 (–0.9 to 2.0); slope 0.5 (0.2 to 0.7); R = 0.59. (d) Change in global EF between Exercise 1 and Exercise 2. y-intercept 0.7 (–0.6 to 2.0); slope –0.3 (–0.5 to –0.1); R = –0.54. EF = ejection fraction.

 




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