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Table 4 Comparison of mean values of flexion of lumbar spine within and between both 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-treatment51.00 ± 11.7751.30 ± 10.01− 0.0870.931 (NS)
Post-treatment61.10 ± 11.9259.85 ± 8.110.3880.700 (NS)
Mean difference10.108.55 
% change19.8016.67
t value− 14.522− 7.616
p value0.001 (S)0.001 (S)
  1. NS not significant, S significant