The Egyptian Journal of Neurology, Psychiatry and Neurosurgery

Table 1 Comparison of laboratory tests, physical activity tests and HDRS scores before and after exercise in group I

From: Effect of intra-dialytic physical exercise on depression in prevalent hemodialysis patients

	Group I		Test value	P value
	Before	After	Test value	P value
TNF-α (pg/ml)
Mean ± SD	109.88 ± 46.80	46.24 ± 14.66	7.883•	0.000
Range	32–200	20–79	7.883•	0.000
Ca (mg/dl)
Mean ± SD	8.43 ± 0.61	8.36 ± 0.65	1.026•	0.315
Range	7.5–9.5	7.3–9.3	1.026•	0.315
PO₄ (mg/dl)
Mean ± SD	5.46 ± 0.89	4.36 ± 0.90	5.352•	0.000
Range	4.1–7.5	2.8–6	5.352•	0.000
PTH (pg/ml)
Mean ± SD	466.60 ± 176.68	402.00 ± 140.98	2.900•	0.008
Range	99–770	140–620	2.900•	0.008
URR %
Mean ± SD	72.40 ± 8.47	76.23 ± 7.48	− 4.655•	0.000
Range	61–90	65–90	− 4.655•	0.000
HB (g/dl)
Mean ± SD	9.41 ± 1.13	9.55 ± 0.92	− 0.990•	0.332
Range	7.5–13	8–12.7	− 0.990•	0.332
T. sat. %
Mean ± SD	33.74 ± 8.89	31.39 ± 8.26	1.645•	0.113
Range	18–51	12.6–48	1.645•	0.113
TSH (mu/l)
Mean ± SD	1.56 ± 0.34	1.46 ± 0.33	2.042•	0.052
Range	1–2.3	0.9–2.1	2.042•	0.052
HDRS
Mean ± SD	17.56 ± 4.21	10.40 ± 3.25	10.310•	0.000
Range	11–26	5–18	10.310•	0.000
6MWT (m)
Mean ± SD	217.68 ± 37.40	253.04 ± 42.48	− 15.413•	0.000
Range	153–285	177–343	− 15.413•	0.000
RAPA
Median (IQR)	2 (2–2)	3 (3–3)	− 4.134≠	0.000
Range	1–3	1–4	− 4.134≠	0.000
PeakVO₂ (ml/(kg min)
Mean ± SD	9.91 ± 0.88	10.72 ± 0.98	− 15.828•	0.000
Range	8.4–11.5	9–12.8	− 15.828•	0.000

TNF-α: tumor necrosis factor alpha, Ca: calcium, PO₄: phosphorus, PTH: parathyroid hormone, URR: urea reduction ratio, HB: hemoglobin, T. sat.: transferrin saturation, TSH: Thyroid Stimulation Hormone, HDRS: Hamilton Depression Rating Scale, 6MWT: six-min walk test, RAPA: rapid assessment of physical activity, peak volume of oxygen consumption (peak VO₂)
•: Paired t test; ≠: Wilcoxon Rank test; P value > 0.05: non-significant; P value < 0.05: significant; P value < 0.01: highly significant

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