Table 1.
Comparison of body composition variables between normal, osteopenia and osteoporosis. Values are means (±SD).
Variables
Normal
(n = 85)
Osteopenia
(n = 120)
Osteoporosis
(n = 64)
P for linear trends
Demographic Measures
Age (yrs)
71.7 (5.3)
72.4 (4.5)
80.3 (6.0)
.001
Menopause period (yrs)
50.7 (3.9)
49.0 (4.8)
49.0 (3.0)
.180
Body Composition
BMI (kg·m
2
)
25.3 (3.1)
25.1 (3.4)
22.7 (3.3)
.039
Body fat (%)
36.7 (6.2)
36.3 (6.1)
33.6 (7.7)
.264
Lean mass (kg)
35.3 (3.0)
34.9 (3.4)
32.6 (3.3)
.032
WC (cm)
83.6 (9.3)
84.3 (8.3)
83.8 (8.8)
.934
ASM index (kg·m
2
)
6.1 (.4)
5.9 (.6)
5.5 (.5)
.007
Bone Mineral Density
Femur total BMD (g·cm
2
)
.937 (.076)
.783 (.048)
.655 (.107)
.001
Femur total T-score
-.22 (.67)
-1.61 (.42)
-2.89 (.73)
.001
Femur neck BMD (g·cm
2
)
.814 (.073)
.704 (.058)
.588 (.132)
.001
Femur neck T-score
-1.06 (.61)
-1.99 (.50)
-2.94 (1.09)
.001
Physical Activity
LPA (min/day)
54.9 (14.2)
49.6 (14.6)
31.7 (14.7)
.001
MPA (min/day)
21.2 (15.7)
17.7 (9.2)
7.6 (6.2)
.002
VPA (min/day)
1.3 (1.6)
1.2 (1.4)
.6 (.6)
.234
BMD: bone mineral density; BMI: body mass index; WC: waist circumference; ASM: appendicular skeletal muscle mass; LPA: low physical activity; MPA: moderate physical activity; VPA: vigorous physical activity.