Figure 4. Mean and standard deviation of internal/external (IR/ER) rotation joint angles of HG, bold solid line (mean) and solid line (standard deviation) and CG, bold dashed line (mean) and dashed line (standard deviation). The charts show the joint angles of the affected side (AF) and unaffected side (UF) of HG. HG = hemiparetic group; CG = control group. The bars and asterisks on the x-axes indicate the phases of the gait cycle that presented significant differences (P ≤ 0.05) between the HG and CG curves (t-test or Wilcoxon test according to the presence or absence of normal distribution and equality of variance).