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Figure 4 Exercise and viscosity parameters are compared between patients with hematocrit (Hct)  65% or <65%. Those with higher Hct had a longer mean treadmill exercise duration (A) and higher peak oxygen consumption (VO2) (B) despite higher whole blood viscosity at low shear (C) and high shear (D) in the same group. VO2 = oxygen consumption; low shear = 0.27 s–1; high shear = 128.5 s–1.
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