Correlation between bone mineral density and body composition in Japanese females aged 18–40 years with low forearm bone mineral density

Table 1 Comparison of first examination results between those targeted and not targeted for the second examination

Characteristics of subjects	Second examination
Characteristics of subjects	Not targets^a (n = 2921)	Targets^b (n = 539)
Age (year)	33.2 ± 4.1	33.0 ± 4.2
Body height (cm)	157.7 ± 5.0	157.9 ± 5.0
Body weight (kg)	51.5 ± 7.0	48.4 ± 6.0**
BMI (kg/m²)	20.7 ± 2.7	19.4 ± 2.2**
BF%: by BIA (%)	25.0 ± 5.5	23.1 ± 5.3**

** P < 0.01; unpaired t test
All values are given as the mean ± standard deviation
BMI, Body mass index; BF%, body fat percentage; BIA, bioelectrical impedance analysis; BMD, bone mineral density
^aBMD of the forearm (distal) more than 0.41 g/cm² at first examination
^bBMD of the forearm (distal) below 0.41 g/cm² at first examination

ISSN: 1347-4715