Table 2 Characteristics of study participants of quartiles of serum phosphate.

From: Exploring the Link between Serum Phosphate Levels and Low Muscle Strength, Dynapenia, and Sarcopenia

Characteristics of Study Participants

Hypophosphatemia

Quartiles of serum phosphate in normal range

Hyperphosphatemia

P Value

<0.81

Q1 (0.81–1.03) (n = 1880)

Q2 (1.03–1.16) (n = 2018)

Q3 (1.16–1.26) (n = 1869)

Q4 (1.29–1.49) (n = 1654)

>1.49

Continuous variables, mean (SD)

Age (years)

53.24(16.44)

52.29(18.16)

50.51(18.79)

48.65(19.01)

49.62(18.86)

41.19(18.82)

<0.001

Thigh circumference (cm)

53.37(7.43)

52.99(7.06)

53.12(7.21)

52.66(7.01)

52.73(7.07)

53.33(7.03)

0.264

Calf circumference (cm)

38.32(4.59)

38.33(4.30)

38.36(4.31)

37.95(4.25)

37.96(4.38)

38.35(4.59)

0.010

Muscle Strength (nt)

401.04(126.00)

365.76(120.09)

350.09(124.92)

338.14(115.83)

331.78(124.69)

303.36(122.24)

<0.001

Appendicular lean mass (g)

23066.66(5910.36)

22424.09(5858.85)

21988.30(6168.79)

21335.16(6082.25)

21412.85(6422.66)

22969.98(6802.24)

<0.001

BMI (kg/m2)

29.20(6.59)

28.79(6.11)

28.36(6.20)

28.07(6.04)

27.98(6.21)

28.44(6.17)

<0.001

AST (U/L)

28.22(30.94)

25.04(16.51)

24.24(12.81)

24.71(24.12)

24.64(15.72)

35.15(123.19)

0.563

Serum TC (mg/dL)

192.60(41.66)

199.94(40.85)

198.54(38.64)

201.86(42.94)

202.30(41.54)

206.95(48.28)

0.017

Serum FG (mg/dL)

107.26(36.09)

101.77(39.53)

96.28(30.52)

96.18(35.88)

94.90(34.84)

91.10(29.89)

<0.001

Serum HDL (mg/dL)

46.93(13.22)

50.05(15.17)

51.60(15.89)

52.54(15.56)

52.75(15.91)

52.47(16.40)

<0.001

Calcium (mg/dL)

9.26(0.53)

9.32(0.43)

9.39(0.39)

9.43(0.39)

9.46(0.40)

9.56(0.49)

<0.001

Creatinine (mg/dL)

0.82(0.33)

0.81(0.27)

0.84(0.39)

0.80(0.42)

0.85(0.47)

1.25(1.69)

<0.001

Categorical variables, n (%)

Arthritis

48(2.5)

490(27.1)

509(28.2)

439(24.3)

369(20.4)

46(2.4)

0.050

Congestive heart failure

8(3.5)

64(30.8)

54(26)

56(26.9)

34(16.3)

14(6.1)

0.204

Coronary heart disease

8(2.4)

98(32.2)

83(27.3)

73(24)

50(16.4)

17(5.2)

0.129

Angina/angina pectoris

11(4.0)

74(28.9)

76(29.7)

67(26.2)

39(15.2)

14(5.0)

0.083

Heart attack

10(3.0)

90(28.8)

83(26.6)

86(27.6)

53(17)

14(4.2)

0.127

Stroke

8(3.4)

64(28.2)

59(26)

49(21.6)

55(24.2)

3(1.3)

0.697

Smoking

84(2.2)

924(25.7)

973(27.1)

865(24.1)

828(23.1)

133(3.5)

0.352

  1. BMI, body mass index; SBP, systolic blood pressure; Serum FG, serum fasting glucose; Serum TC, serum total cholesterol; AST, aspartate aminotransferase; Serum HDL, serum high density lipoprotein.
  2. aValues were expressed as mean (standard deviation).
  3. bValues in the categorical variables were expressed as number (%).