Figure 4.

Scatterplots demonstrating the relationships between the three commonly used voluntary activation quantification techniques. There were significant correlations between all the three methods (P < 0.001). Note that the correlation between the CAR method and the ITT based percent activation method was very strong, however, the relationships between these methods and the modified CAR method was not very strong. R² values represent the amount of variability explained by the model. The equations in the figure describe the relationships between the different quantification methods.