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Table 1 Characteristics of participants with no, resolving, developing, and persistent high intensity back pain

From: High baseline fat mass, but not lean tissue mass, is associated with high intensity low back pain and disability in community-based adults

Baseline characteristics

High intensity low back pain

No (n = 84)

Resolving (n = 13)

Developing (n = 11)

Persistent (n = 15)

Age (years)

49.0 (8.2)

42.6 (10.6)

50.9 (6.6)

50.1 (7.7)

Gender (n, % female)

64 (76.2)

10 (76.9)

10 (90.9)

12 (80.0)

BMI (kg/m2)

29.7 (7.5)

36.5 (7.5)

37.0 (9.5)

36.4 (7.9)

SF-36 mental component summary score

48.9 (11.7)

42.1 (15.6)

42.0 (16.9)

40.5 (15.0)

Strenuous physical activity for > 20 min (over 14-day period) (n, %)

70 (83.3)

9 (69.2)

9 (81.8)

7 (46.7)

Fat mass (kg)

 Total

31.6 (16.1)

46.4 (16.4)

45.7 (14.6)

43.1 (14.6)

 Trunk

16.5 (8.4)

25.1 (8.2)

24.1 (7.2)

23.0 (8.1)

 Upper limb

3.0 (1.7)

4.3 (2.1)

4.5 (1.9)

4.3 (1.6)

 Lower limb

11.2 (6.4)

15.9 (7.0)

16.1 (5.8)

14.8 (6.0)

 Android

2.9 (1.6)

4.5 (1.7)

4.2 (1.5)

4.2 (1.8)

 Gynoid

5.8 (2.6)

8.0 (2.9)

8.0 (2.3)

7.7 (2.4)

 Android to gynoid ratio (%)

48.6 (16.2)

58.3 (14.2)

52.5 (8.4)

54.2 (17.8)

Lean tissue mass (kg)

 Total

46.8 (9.5)

51.9 (11.7)

48.1 (10.2)

49.0 (12.2)

 Upper limb

5.1 (1.4)

5.7 (1.4)

5.0 (1.3)

5.5 (1.9)

 Lower limb

15.4 (3.4)

17.1 (3.4)

15.6 (3.1)

15.7 (4.5)

Total body fat to lean mass ratio

0.7 (0.3)

0.9 (0.3)

0.9 (0.2)

0.9 (0.3)

  1. Mean (SD) unless otherwise noted
  2. BMI body mass index, SF-36 Short Form 36