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Figure 3 | Respiratory Research

Figure 3

From: Dynamic hyperinflation is associated with a poor cardiovascular response to exercise in COPD patients

Figure 3

Relationship between double product change from rest to peak exercise (DP reserve) and EELV (%TLC) at peak of exercise in the study population. Horizontal and vertical interrupted lines correspond to 10,000 mmHg · bpm DP reserve value and to 75% EELV of TLC value, respectively. According to the ROC curve method, a DP reserve ≤ 10,000 mmHg · bpm was the cut-off point, which maximized sensitivity and specificity (0.720 and 0.783, respectively) with respect to EELV (% TLC) ≥ 75%, as a threshold value. Continuous line is the linear regression line.

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Respiratory Research

ISSN: 1465-993X

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