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Table 1 Characteristics of participants

From: Weight over-reporting is associated with low muscle mass among community-dwelling Japanese adults aged 40 years and older: a cross sectional study

Variables

All (n = 525)

Female (n = 436)

Male (n = 89)

Age, years

72 (67, 77)

72 (67, 77)

74 (69, 78)

Measured height, cm

154.3 ± 7.6

152.1 ± 5.8

164.9 ± 6.1

Measured weight, kg

53.7 ± 9.2

51.9 ± 8.3

62.3 ± 8.3

Measured BMI, kg/m2

22.5 ± 3.2

22.4 ± 3.3

22.9 ± 2.7

Weight misperception, kga

0.5 (−0.2, 1.0)

0.5 (−0.1, 1.0)

0.3 (−0.6, 0.8)

Weight misperception, %a

0.9 (−0.3, 2.0)

1.0 (−0.1, 2.1)

0.5 −0.9, 1.3)

%fat, %

29.6 ± 7.9

31.2 ± 7.2

21.6 ± 5.8

ALM, kg

15.9 ± 3.2

14.9 ± 1.9

21.0 ± 3.3

SMI, kg/m2

6.6 ± 0.8

6.4 ± 0.5

7.7 ± 0.9

Low muscle mass, n (%)

49 (9.3%)

33 (7.6%)

16 (18.0%)

Exercise habit, n (%)

 Yes

396 (75.4%)

329 (75.5%)

67 (75.3%)

 No

129 (24.6%)

107 (24.5%)

22 (24.7%)

Smoking habit, n (%)

 No

507 (96.6%)

429 (98.4%)

78 (87.6%)

 Yes

18 (3.4%)

7 (1.6%)

11 (12.4%)

Drinking habit, n (%)

 No

337 (64.2%)

310 (71.1%)

27 (30.3%)

 Yes

118 (22.5%)

126 (28.9%)

62 (69.7%)

Self-reported health, n (%)

 Good

440 (83.8%)

367 (84.2%)

73 (82.0%)

 Poor

85 (16.2%)

69 (15.8%)

16 (18.0%)

Self-reported physical fitness, n (%)

 Good

269 (51.2%)

223 (51.1%)

46 (51.7%)

 Poor

256 (48.8%)

213 (48.9%)

43 (48.3%)

Socioeconomic status, n (%)

 High

385 (73.5%)

324 (74.3%)

61 (69.3%)

 Low

139 (26.5%)

112 (25.7%)

27 (30.7%)

  1. Data are the means ± SD or percentages. Age and weight misperceptions are median values (interquartile ranges)
  2. BMI Body mass index, ALM Appendicular lean mass, SMI Skeletal muscle index
  3. aCalculated by subtracting measured values from self-reported values