Due to an issue with the reference management software during manuscript preparation, a citation for a manuscript used to comprise Figure 2 is missing. The following reference should have been cited in relation to Figure 2:
Coggan AR, Swanson SC, Mendenhall LA, et al. (1995) Effect of endurance training on hepatic glycogenolysis and gluconeogenesis during prolonged exercise in men. Am J Physiol Endocrinol Metab 268, E375–E383.