Figure 1. Scatter plots exploring individual differences in impedance following intermittent sub-maximal treadmill exercise. The difference between pre- and post-exercise impedance is plotted against body weight for the female (●; a) and male (○; b) children. Values greater than zero indicate a decrease from pre- to post-exercise. The mean difference is represented by the solid line, and the dashed lines represent ± 2 SD from the mean.