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Figure 4 Peak oxygen consumption (pV̇o2) against age for patients with systolic heart failure (SHF) (unfilled circles), patients with preserved systolic function with diastolic dysfunction (PSFDD) (grey circles) and controls (solid circles). Regression lines for controls (solid line, r = 0.34), PSFDD (long dashes, r = 0.37) and SHF (short dashes, r = 0.07).
