Table 1. Means (±SD) of quadriceps inhibition (QI) over time and the change in lumbar paraspinal (LP) median frequency during the first and second exercise sets.
Control (n=25)
History of LBP (n=25)
BSL QI (%)
9.92 (9.37)
9.27 (94.0)
Post Set 1 QI(%)
13.38 (9.80)
11.91 (.28)
Post Set 2 QI(%)
16.26 (9.85)
14.20 (9.73)
Set 1 DLPMedF(%)
-17.10 (5.69)
-16.61 (5.63)
Set 2 DLPMedF(%)
-24.82 (8.37)
-23.72 (5.84)
BSL: Baseline. ∆LP: % change in lumbar paraspinal median frequency during exercise set.