Figure 4.   Data from the paired motor unit technique in control and whole‐body relaxation trials.

The different panels illustrate the changes in ΔF of individual test units (A, n = 101), peak smoothed firing rate (B), recruitment (C) and derecruitment thresholds (D) of individual motor units (n = 174) from control to whole‐body relaxation. Each pair of points represents an individual test unit (A) or motor unit (B, C, D), whilst each colour refers to one participant. Estimated marginal means are represented in black circles, with 95% confidence intervals indicated. Kernel density estimation (density curves) of the data is represented on the right by half‐violin plots (blue for control and orange for whole‐body relaxation). The peak, valleys and tails of the density curves can be visually compared to see where control and whole‐body relaxation trials were similar or different. The repeated measures nested linear mixed‐effects models revealed a significant (^* P < 0.05) decrease in ΔF and peak smoothed firing rate from control to whole‐body relaxation, and an increase in recruitment threshold. [Colour figure can be viewed at wileyonlinelibrary.com]