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Table 2 Postural balance (scaled velocity moment [m2/s]). Baseline and percentages changes after 12 months of treatment with melatonin or placebo (median with 25–75 % interquartile range

From: The effect of melatonin treatment on postural stability, muscle strength, and quality of life and sleep in postmenopausal women: a randomized controlled trial

  Baseline (m2/s) P-value Changes after 12 months (%) P-value*
Normal standing, eyes open 0.04   0.11
 Placebo 4.1 (2.9;6.4)   −10.98 (−30.39;19.00)  
 Melatonin 3.3 (2.7;4.1)   6.30 (−22.83;43.43)  
Normal standing, eyes closed 0.31   0.29
 Placebo 5.7 (3.6;8.5)   −7.79 (−39.72;33.31)  
 Melatonin 4.7 (3.4; 6.7)   4.06 (−24.17;50.00)  
Semi tandem   0.58   0.67
 Placebo 20.4 (15.6;33.1)   −4.97 (−33.98;29.42)  
 Melatonin 20.5 (16.4; 28.7)   −15.60 (−26.79;23.33)  
Tandem   0.48   0.55
 Placebo 48.7 (34.1;63.3)   −4.00 (−38.45;48.70)  
 Melatonin 43.3 (29.0; 73.3)   2.10 (−26.27;46.77)  
  1. Significance is shown in bold
  2. *Percentages change between groups