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Table 1 Clinical data in lean, overweight and obese patients with fibromyalgia

From: Exercise and obesity in fibromyalgia: beneficial roles of IGF-1 and resistin?

  Lean (group 1) Overweight (group 2) Obese (group 3) Lean vs overweight Lean vs obese
  Median (range) n Median (range) n Median (range) n P-valuea
Age, years 52.0 (33.5 to 54.0) 9 53.0 (48.0 to 56.0) 26 51.0 (47.0 to 55.5) 13 0.288 0.647
BMI, kg/m2 23.5 (21.5 to 24.0) 9 28.1 (27.1 to 29.5) 26 32.7 (30.8 to 35.7) 13 <0.001 <0.001
Tender points, n 14.0 (12.5 to 15.5) 9 15.0 (13.0 to 17.0) 26 15.0 (13.0 to 16.0) 13 0.224 0.393
Baseline FIQ fatigue, mm 97.0 (77.5 to 98.0) 9 74.0 (52.8 to 88.5) 26 88.0 (72.5 to 91.5) 13 0.008 0.110
Baseline MFIGF 20.0 (17.0 to 20.0) 9 16.5 (13.0 to 20.0) 26 17.0 (14.5 to 20.0) 13 0.061 0.209
Change in FIQ fatigue after 15 weeks, mm -7.0 (-13.5 to 0.0)
P = 0.046
8 -0.5 (-16.3 to 8.3)
P = 0.485
26 -8.0 (-20.5 to 2.0)
P = 0.059
13 0.368 0.972
Change in FIQ fatigue after 30 weeks, mm -4.5 (-12.8 to 0.3)
P = 0.161
8 -2.0 (-7.0 to 8.8)
P = 0.966
24 -2.5 (-6.8 to 4.5)
P = 0.345
12 0.254 0.473
Change in MFIGF after 15 weeks -2.0 (-4.2 to 0.0)
P = 0.084
8 0.0 (-1.2 to 1.0)
P = 0.515
26 0.0 (-3.5 to 1.0)
P = 0.641
13 0.164 0.336
Change in MFIGF after 30 weeks -3.0 (-5.5 to -2.0)
P = 0.017
8 -2.0 (-3.0 to 0.0)
P = 0.001
24 -3.0 (-4.0 to -1.0)
P = 0.016
12 0.147 0.624
  1. Levels of fatigue (FIQ and MFIGF) at baseline (0 weeks), during training (15 weeks) and after training (30 weeks). Lean patients had BMI 18.5 to 24.9; overweight patients had BMI 25.0 to 29.9. Obese patients had BMI ≥30.0. Median values and interquartile range are indicated. aMann-Whitney U-test. n, number; BMI, body mass index; FIQ, Fibromyalgia Impact Questionnaire; MFIGF, Multidimensional Fatigue Inventory subscale of General Fatigue.
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