The Egyptian Journal of Neurology, Psychiatry and Neurosurgery

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 value	P value
Pre-treatment	28.20 ± 3.50	29.65 ± 5.88	− 0.948	0.351 (NS)
Post-treatment	42.40 ± 4.08	41.55 ± 4.62	0.617	0.541 (NS)
Mean difference	14.20	11.90
% change	50.35	40.13
t value	− 21.218	− 14.796
p value	0.001 (S)	0.001 (S)

NS not significant, S significant

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