Fig. 2.

The central activation ballistic force ratio (CAB Ratio) is associated with mobility in older adults. The CAB ratio, which is derived from comparing the rates of rapid voluntary and electrically-stimulated force development to represent a measure indicative of the nervous systems ability to generate rapid, ballistic force, was associated with mobility (r = 0.38, p = 0.006). The figure illustrates sex-specific lines of best fit, which are significant for both men (filled circles/solid line; r = 0.60, p = 0.12) and women (open circles/dashed line; r = 0.37, p = 0.028)