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Table 2 Comparison of LM thickness at different time points between two groups (mean ± SD, cm)

From: Effect of real-time ultrasound imaging for biofeedback on trunk muscle contraction in healthy subjects: a preliminary study

Time point

Exp (n = 20)

CG (n = 20)

Trest

2.432 ± 0.328

2.460 ± 0.285

Tc-max

3.162 ± 0.334#

3.058 ± 0.342#

T15s

3.101 ± 0.332#

2.849 ± 0.350#

T30s

3.052 ± 0.326#,*

2.662 ± 0.282

Fgroup / P value

12.34 / <  0.001

Ftime / P value

31.45 / <  0.001

Fgroup*time / P value

3.137 / 0.027

  1. NOTE: Exp Experimental group, CG Control group. # Compared with the resting state, P <  0.05;
  2. * Compared with the control group, P <  0.05