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Table 3 Differences in muscle strength.

From: Effect of tadalafil on blood flow, pain, and function in chronic cold Complex Regional Pain Syndrome: a randomized controlled trial

  tadalafil placebo   
  start end start end Pt Pgt
Knee extension 64.2N (64.8%) 56.7N (70.3%) 97.7N (45.2%) 80.3N (58.9%) 0.01* 0.05
Knee flexion 52.0N (66.1%) 45.2N (70.7%) 70.4N (52.9%) 43.5N (71.8%) 0.12 0.08
Foot dorsal flexion 79.6N (53.6%) 84.3N (51.0%) 102.5N (39.5%) 81.4N (52.1%) 0.40 0.28
Foot plantar flexion 93.0N (56.4%) 100.2N (57.0%) 134.6N (42.4%) 76.1N (64.1%) 0.05 0.34
  1. Results of the muscle force tests measured with the MicroFet 2 Dynamometer. Values indicate the differences in muscle strength between the CRPS affected and contralateral sides. All values are given in units of Newtons (percent difference between the two sides). The start and end times were when treatment started at t = 0 and ended at t = 12 weeks.
  2. Pt = P-value for differences over time; Pgt = P-value for interaction Group*Time