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Table 3 Comparison of TrA 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 0.281 ± 0.076 0.285 ± 0.081
Tc-max 0.539 ± 0.122# 0.518 ± 0.103#
T15s 0.521 ± 0.118#,* 0.412 ± 0.099#
T30s 0.468 ± 0.120#,* 0.348 ± 0.098
Fgroup / P value 14.01 / < 0.001
Ftime / P value 40.54 / < 0.001
Fgroup*time / P value 3.583 / 0.015
  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