Skip to main content

Table 3 Isometric trunk rotational strength values

From: Trunk rotational strength asymmetry in adolescents with idiopathic scoliosis: an observational study

  36° 18° Neutral -18° -36°
Pre-Rotation Side Left/Concave Right/Convex
Contraction Direction Left/Concave Right/Convex Left/Concave Right/Convex Left/Concave Right/Convex Left/Concave Right/Convex Left/Concave Right/Convex
Force Arc Low High Low High    High Low High Low
  Absolute Values
HG (n = 24) 25.8(8.2) 49.7(13.5) 31.2(9.7) 41.4(10.7) 35.9(10.1) 36.7(11.1) 42.9(12.7) 31.1(10) 44.9(12.6) 24.7(7.8)
ISG (n = 14) 19.6(6.9) 42.5(11.8) 24.0(7.5) 38.7(11.6) 30.5(6.8) 35.2(9.8) 38.2(4.6) 28.3(8.7) 41.9(7.4) 22.9(7.2)
p-values < 0.05 ns 0.05 ns 0.05 ns ns ns ns ns
  Normalized to Lean Body Weight
HG (n = 24) 0.62(.17) 1.18(.26)* 0.74(.21) 1.00(.22) 0.86(.22) 0.88(.25) 1.02(.25) 0.74(.19) 1.08(.30)* 0.59(.17)
ISG (n = 14) 0.50(.16)††† 1.10(.27) 0.59(.19)†† 0.99(.22) 0.77(.16) 0.89(.22)† 0.96(.10) 0.72(.16)†† 1.05(.17) 0.57(.16)†††
p-values < 0.05 ns 0.01 ns ns ns ns ns ns ns
  1. Trunk rotational strength presented in absolute values and normalized to Lean Body Weight (Nm/Kg) (with standard deviations) measured at five trunk positions in two contraction directions. If viewed with Figure 2 it illustrates the five trunk positions, i.e. rotated to the left 36° or 18°, neutral position, and rotated to the right 18°, or 36°. Strength values in two contraction directions, left or right for the healthy group (HG) and concave or convex for the idiopathic scoliosis group (ISG), are shown below each position figure. P-values are listed directly below the vales compared between the HG and ISG. Within group significant differences: *, †, ††, ††† = p < 0.05
\