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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