Fig. 7
Linear regressions among indices of AIH-induced enhancements in corticospinal excitability and their correlation with motor savings outcomes. The red text indicates statistically significant adjusted R2 values (p < 0.05), while the black text signifies insignificant values. (A) We identified a significant correlation between increased maximum motor-evoked potential amplitude (MEPmax) after AIH and savings of lower step length asymmetry. (B) Increased area under the recruitment curve post-AIH exhibited a significant correlation with the savings of lower step length asymmetry. (C) We observed a significant correlation between heightened MEPmax post-AIH and the savings of higher step time asymmetry. (D) Increased area under the recruitment curve post-AIH positively correlated with the savings of higher step time asymmetry. (E) There was a significant correlation between elevated MEPmax after AIH and the savings of lower net metabolic power. (F) We found a positive correlation between a larger area under the recruitment curve post-AIH and the savings of lower net metabolic power. Individual data points are shown in blue, and the 95% confidence interval is represented by the grey-shaded area.
