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Table 1 Statistical results of Spasms and NEMG in relaxation period

From: Spasm and flexion-relaxation phenomenon response to large lifting load during the performance of a trunk flexion-extension exercise

Lifting Load (kg) Spasms NEMG(%MVC) (Mean(SD))
Case prevalence Absolute (%MVC) Normalized
0 0 0 1.05(0.21) 1.00(0.00)
15 10a** 45%a** 1.87(0.33) a** 1.78(0.09) a**
20 15a**b* 68%a**b* 2.13(0.32) a** 2.03(0.10) a**b*
25 18a**b**c* 82% a**b**c* 2.37(0.40) a**b** 2.26(0.12) a**b**c*
  1. ** P < 0.01;*P < 0.05 (a = vs. 0 kg; b = vs. 15 kg; c = vs. 20 kg). (NEMG = mean normalized EMG)