Table 2

Results of correlation analyses of the associations of maximal aerobic capacity and lifting capacity, work ability, pain-related disability and physical functioning with demographic and clinical characteristics

V̇O2max (L/min) n=74Lifting capacity (kg) n=72Work ability (WAS) n=73Pain-related disability (PDI) n=72Physical functioning (RAND-36 PF) n=73
V̇O2max (L/min)

Age (years)−0.44*−0.37*−0.10−0.050.00−0.01−0.21
BMI (kg/m2)−0.06−0.07−0.10−0.19−0.170.10−0.33**
Diagnosis area0.15−0.12−0.060.13−0.24*0.25*−0.09
Pain duration (years)−0.180.38*−0.07−
Education level0.50**0.190.41*0.100.35**−0.140.18
Work demands−0.49**0.09−−0.20*
Pain intensity (VAS)−0.17−0.03−0.31−0.08−0.36**0.41**−0.35**
Catastrophising (PCS)−0.09−0.14−0.04−0.35*−0.180.16−0.26*
Injustice (IEQ)−0.06−0.210.11−0.38*−0.210.25*−0.21
Distress (BSI-GSIT)−−0.20−0.27*0.29*−0.07
  • Correlation significance: *P<0.05 ; **p<0.01.

  • *0=male, 1=female.

  • BMI, body mass index; BSI, Brief Symptom Inventory; GSIT, Global Severity Index Total Score; IEQ, Injustice Experience Questionnaire; PCS, Pain Catastrophising Scale; PDI, Pain Disability Index; PF, physical functioning; VAS, Visual Analogue Scale; V̇O2max, maximal aerobic capacity; WAS, Work Ability Score.