Table 1.

MU recruitment thresholds

Initial Recruitment Threshold	Before WBV	After WBV
Category 1	1.08 ± 0.74	2.60 ± 1.56*
Category 2	3.79 ± 1.14	4.07 ± 1.60
Category 3	7.44 ± 0.73	7.81 ± 1.05
Category 4	10.42 ± 1.84	10.13 ± 4.37
Category 5	25.40 ± 10.59	21.34 ± 7.76†

Recruitment threshold (N, mean ± SD) before and after whole body vibration (WBV) of motor units (MUs) categorized by their initial threshold.

^*Significantly greater recruitment threshold after WBV (P = 0.008).

^†Significantly lower recruitment thresholds after WBV (P = 0.031).