Postural correction training improves chronic pain, nerve function, and inflammation in knee osteoarthritis: A retrospective cohort study

Table 4 Comparison of inflammatory factors between the two groups (mean ± SD)

Groups	IL-1β (ng/L)		IL-6 (ng/L)		TNF-α (ng/L)		CRP (mg/L)
	Pre-intervention	Post-intervention	Pre-intervention	Post-intervention	Pre-intervention	Post-intervention	Pre-intervention	Post-intervention
Observation group (n = 50)	26.11 ± 3.45	10.99 ± 1.14a	35.71 ± 5.43	15.19 ± 2.04a	42.09 ± 6.52	18.15 ± 2.94a	12.92 ± 2.44	3.73 ± 1.02a
Control group (n = 50)	26.13 ± 3.41	15.80 ± 1.41a	35.95 ± 5.32	23.64 ± 3.50a	43.06 ± 6.54	27.19 ± 3.85a	12.73 ± 2.47	6.26 ± 2.03a
t value	0.025	18.766	0.222	14.740	0.743	13.186	0.386	7.898
P value	0.980	0.000	0.825	0.000	0.459	0.000	0.701	0.000

^aShows within-group comparisons with pre-intervention: t_{(observation group)} = 28.039, 24.486, 23.273, 24.725, P_{(observation group)} = 0.000, 0.000, 0.000, 0.000, 0.000; t_{(control group)} = 20.658, 13.943, 14.273, 14.593, P_{(control group)} = 0.000, 0.000, 0.000, 0.000.

IL-1β: Interleukin-1β; IL-6: Interleukin-6; TNF-α: Tumor necrosis factor-alpha; CRP: C-reactive protein.