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Table 4 Results of “chair stand test” and pain response

From: Feasibility of isometric spinal muscle training in patients with bone metastases under radiation therapy - first results of a randomized pilot trial

Chair stand test   Intervention group (n = 30)   Control group (n = 30)  
  n Mean SD Min Median Max n Mean SD Min Median Max
Baseline (t0) 30 5.1 1.4 2.0 5.0 7.0 30 4.6 2.0 0.0 4.0 9.0
End of RT (t1) 30 6.7 1.9 4.0 6.5 12.0 30 4.9 2.2 0.0 5.0 10.0
After 3 month (t2) 25 9.0 2.6 5.0 10.0 13.0 23 5.0 2.7 0.0 5.0 10.0
Treatment effect within groups (t2)   p < .001       p = 0.525     
Treatment effect between groups (t2)   p < .001          
pain response (VAS 0–10)             
Pain score at baseline (VAS) 30 4.8 2.1 0.5 5.0 9.0 30 5.1 2.7 0.0 5.3 9.0
Pain score end of RT (VAS) 30 2.4 2.0 0.0 2.0 8.0 30 3.3 2.5 0.0 3.3 9.0
Pain score after 3 month (VAS) 25 1.9 1.4 0.0 1.5 5.0 23 3.8 2.3 0.0 4.5 7.0
Treatment effect within groups (t2)   p < .001       p = 0.010     
Treatment effect between groups (t2)   p = 0.003           
No response (n, %) 8 32%      12 52.2%    
Partial response (n, %) 5 20%      6 26.1%    
Complete response (n, %) 12 48%      5 21.7%    
Treatment effect (t2)   p = 0.158          
  1. The “chair stand test” showed an improvement in intervention group over the course (p < .001), and between groups in favor to intervention group (p < .001). The intervention group improved in pain score (VAS, 0–10) over the course (p < .001), and was significant better between groups (p = .003) after 3 month. The overall pain response showed no significant difference between groups (p = .158). Wilcoxon U test was used between groups, signed-rank test was used within groups. Chi-square test was measured for pain response.