Table 3

Isometric trunk rotational strength values

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


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

McIntire et al. Scoliosis 2007 2:9   doi:10.1186/1748-7161-2-9

Open Data