Table 1. Comparison of p values for median frequency between low back pain (LBP) and controls at each percentage of HAT (head, arms, trunk segment).
%HAT LBP vs. Control Between groups at each %HAT
100% 120% 140% 160%
Left ULES .176 .615 .233 .101 .236
Right ULES .267 .463 .147 .086 .287
Left LLES .453 .850 .968 .090 .402
Right LLES .685 .867 .708 .160 .540
Left biceps femoris .132 .631 .099 .037* .415
Right biceps femoris .004* .677 .057 .065 .037*
ULES: Upper lumbar erector spinae. LLES: Lower lumbar erector spinae.* p ≤ 0.05