But science, like any other reputable discipline, eventually evolved to the point where more precise testing methods could paint a clearer picture of what’s really going on. In 2006, Wakeling et al (J. R. Soc. Interface, 3, 533-544) released a study that analyzed muscle fiber recruitment in the three plantarflexor calf muscles: soleus, medial gastrocnemius, and lateral gastrocnemius.