Table 1.

Demographics and Health Status.^a

Variable	Whole Cohort (n = 31)	Vibration (n = 14)	Control (n = 17)	P
Age, years	61.6 ± 8.3	61.6 ± 9.2	61.6 ± 7.8	.98
Vitamin D, nmol/L	86.8 ± 25.9	85.6 ± 25.8	87.8 ± 26.8	.83
Body mass index,b kg/m2	28.8 ± 4.7	28.4 ± 3.9	29.1 ± 5.3	.72
Education, %				.06
High school	83.8	85.7	81.2
Undergraduate	9.7	0.0	18.8
Postgraduate	6.5	14.3	0.0
Smoking status, %				.15
Past smoker	35.5	35.7	35.2
Current smoker	9.7	0.0	5.7
Alcohol drinks per week	3.8 ± 4.8	3.3 ± 2.8	4.3 ± 6.1	.59
Caffeine drinks per week	20.3 ± 10.1	21.4 ± 7.3	19.3 ± 12.3	.59
Months of AI therapy at baseline, median (IQR)	10 (20)	3 (13.5)	19 (26.5)	.06c
Bone mineral density, g/cm3
Hip	0.874 ± 0.105	0.871 ± 0.093	0.877 ± 0.116	.88
Spine	1.011 ± 0.177	0.987 ± 0.159	1.032 ± 0.193	.49
Whole body	1.053 ± 0.106	1.03 ± 0.061	1.073 ± 0.131	.24

Abbreviations: AI, aromatase inhibitor; IQR, interquartile range.

^aAll data presented as mean ± SD unless otherwise specified.

^bBody mass index: an indicator of body fat calculated by weight (kg)/height² (m). Normal values range from 18.5 to 24.9kg/m². Values >25 kg/m² are considered overweight, and >30 kg/m² are considered obese.

^cMann-Whitney test.