Table 1 Basic characteristics of study participants

Men (%)

71 (60.2%)

21 (52.5%)

50 (64.1%)

Age, year

61.4 ± 12.8

61.5 ± 12.4

61.3 ± 13.0

BMI, kg/m²

23.6 (20.8, 26.2)

24.0 (20.7, 27.1)

23.5 (20.8, 25.9)

Causes of end-stage kidney disease

Diabetes mellitus

37 (31.4%)

16 (40.0%)

21 (27.0%)

Glomerulonephritis

34 (28.81%)

9 (22.5%)

25 (32.0%)

Hypertensive nephrosclerosis

19 (16.1%)

5 (12.5%)

14 (18.0%)

Others and Undetermined

28(23.73%)

10 (25.0%)

18 (23.1%)

Hemoglobin, g/L

112.7 ± 12.2

112.6 ± 12.1

112.8 ± 12.4

Sodium, mmol/L

140.0 (138.0, 141.9)

139.2 (138.0, 141.4)

140.0 (138.0, 142.0)

Potassium, mmol/L

5.02 ± 0.76

4.88 ± 0.75

5.10 ± 0.76

Phosphate, mmol/L

1.53 ± 0.44

1.53 ± 0.43

1.53 ± 0.45

Bicarbonate, mmol/L

22.71 ± 3.02

23.32 ± 2.60

22.39 ± 3.18

Albumin-adjusted calcium, mmol/L

2.20 ± 0.20

2.23 ± 0.19

2.19 ± 0.21

Albumin,g/L

40.91 ± 2.67

40.89 ± 2.51

40.92 ± 2.77

hs-CRP, mg/L

2.20 (0.99, 6.67)

1.83 (1.04, 5.42)

2.39 (0.96, 6.92)

Predialysis creatinine, µmol/L

921.6 ± 217.0

854.7 ± 216.5

956.0 ± 210.4

Predialysis BUN, mmol/L

24.9 (22.8, 27.3)

24.1 (20.8, 26.3)

25.0 (23.1, 27.7)

iPTH, pmol/L

88.0 (23.2, 200.6)

100.4 (27.6, 171.0)

85.2 (22.2, 207.9)

25(OH)D, ng/ml

11.58 (8.51, 15.41)

7.49 (5.56, 8.53)

13.73 (11.59, 17.86)

single-pool Kt/V

1.43 (1.24, 1.66)

1.51 (1.29, 1.64)

1.36 (1.21, 1.66)

Dialysis vintage, months

82 (52,135)

81 (43,136)

83 (52,130)

Gait speed, m/s

0.95 ± 0.22

0.88 ± 0.21

0.99 ± 0.20

Handgrip strength, kg

27.92 ± 9.12

24.79 ± 7.10

29.54 ± 9.65

Low gait speed

69 (58.5%)

28 (70.0%)

41 (52.6%)

Low handgrip strengh

28 (23.7%)

12 (30.0%)

16 (20.8%)