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

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

	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)