Figure 4. Effect of SCI (spinal cord injury) and FES-CE (functional electric cycle ergometry) on CSAf (muscle fiber cross sectional area; μm) pre-treatment (empty); vs. post-treatment (black). UIC; uninjured control, IC; injured control, IE; injured exercise trained. a = significantly different than UIC; b = significantly different than baseline in same group; c = significant difference between IC and IE. Level of significance was (p < 0.05).