Fig. 3.

GLUT4 and mitochondrial markers increased after 2 wk of low-volume high-intensity interval training. A–D: 2 wk of high-intensity training increased GLUT4 protein content in skeletal muscle (A), glycemic control (average blood glucose) as measured by continuous glucose monitoring (B), citrate synthase (CS) activity (C), and mitochondrial markers in skeletal muscle (D). Pre, before training; Post, after training; NDUFA9, NADH dehydrogenase (ubiquinone) 1α subcomplex subunit 9. Values are means ± SD; n = 7. *P < 0.05. [Adapted from Ref. 46.]