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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