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Table 7 Comparison of mean value of left side bending within and between groups

From: Efficacy of spinal extension exercise program versus muscle energy technique in treatment of chronic mechanical low back pain

 Group A (n = 20)Group B (n = 20)t valueP value
Pre-treatment28.20 ± 3.5029.65 ± 5.88− 0.9480.351 (NS)
Post-treatment42.40 ± 4.0841.55 ± 4.620.6170.541 (NS)
Mean difference14.2011.90 
% change50.3540.13
t value− 21.218− 14.796
p value0.001 (S)0.001 (S)
  1. NS not significant, S significant