Table 2.

Peak capacity for oxygen utilization and delivery in patients with mitochondrial myopathy and healthy controls

Group	VO2 peak (ml/kg/min)	Peak a-vO2 difference (ml/dl)	ΔQ/ΔVO2
Controls	20.7 ± 7.9 (9.5–31.9)	12.6 ± 2.3 (9.3–16.0)	5.9 ± 1.2 (4.7–7.7)
Patients with mitochondrial myopathy	11.1 ± 4.0* (5.6–18.7)	5.9 ± 2.3* (3.1–8.9)	14.4 ± 5.1** (9.2–25.0)a

a Value for Patient 4 not included in average and range presented (see text). Group average ± SD and range of values are provided.

*P < 0.01; **P < 0.001.