East Japan (n = 75)

West Japan (n = 104)

SOS correlation

SOS correlation

Age

19.0 ± 0.7

−0.007

20.8 ± 1.9**

−0.175

Height (cm)

157.5 ± 4.9

0.001

157.9 ± 5.1

0.001

Body weight (kg)

51.0 ± 7.1

0.082

53.0 ± 7.2

0.137

BMI (kg/m2)

20.5 ± 2.5

0.098

21.3 ± 2.8

0.137

SJ (cm)

21.6 ± 4.6

0.280*

CMJ (cm)

23.2 ± 5.0

0.273*

Right hand grip strength average (kg)

25.2 ± 4.4

0.1

Left hand grip strength average (kg)

23.2 ± 4.6

0.184

Muscle mass (kg)

36.0 ± 3.0

0.283**

Body fat percentage (%)

27.3 ± 5.4

−0.063

SOS (m/sec)

1557.1 ± 29.7

1549.2 ± 37.2

%YAM (%)

110.4 ± 16.7

106.3 ± 20.5

%YAM ≥ 100

58 (77.3)

61 (58.7)††

<100

17 (22.7)

43 (41.3)

No family history of osteoporosis

54 (96.4)

95 (91.3)

Family history of osteoporosis

2 (3.6)

9 (8.7)