Figure 1
Tendency and percentile of PBF in study participants. (A) PBF by age and gender. (B) Selected percentiles of smoothed PBF among boys aged 11–14.5 years, and (C) selected percentiles of smoothed PBF among girls aged 11–14.5 years.
PBF = percentage of body fat.
Figure 2
A strong correlation between fat content and PBF in study participants. Pearson’s correlation coefficient was calculated to analyze the relations (A) between PBF and BMI, (B) between PBF and subcutaneous fat, and (C) between BMI and subcutaneous fat.
BMI = body mass index; PBF = percentage of body fat.
Figure 3
Using of PBF to identify being overweight and obese in study participants. (A) Percentage of overweight or obese participants classified by PBF vs BMI. Prevalence of being overweight and obese defined by PBF in (B) Hanoi and (C) Nam Dinh city.
BMI = body mass index; PBF = percentage of body fat.
Table 1Anthropometric and body composition characteristics by gender.
Characteristics |
Boys (n = 445) |
Girls (n = 457) |
p
|
Age (y) †
|
13.1 (12.2 – 13.9) |
12.8 (11.9 – 13.6) |
< 0.0001 |
Height (cm) *
|
156.1 ± 10.3 |
153.3 ± 6.8 |
< 0.0001 |
Weight (kg) †
|
48.1 (40.3 – 54.1) |
44.7 (38.6 – 49.7) |
< 0.0001 |
Hip (cm) †
|
85.2 (80.0 – 90.0) |
84.9 (80.0 – 89.0) |
0.983 |
Waist (cm)b |
69.8 (63.0 – 75.0) |
66.6 (62.0 – 70.0) |
< 0.0001 |
BMI (Kg/m2) †
|
19.5 (16.8 – 21.5) |
18.8 (16.7 – 20.4) |
0.023 |
Subcutaneous fat (%)*
|
12.4 ± 4.4 |
18.5 ± 3.9 |
< 0.0001 |
PBF (%)*
|
18.3 ± 6.3 |
21.5 ± 4.1 |
< 0.0001 |
Lean mass (%)†
|
36.1 (33.7 – 38.8) |
29.3 (11.9 – 13.6) |
< 0.0001 |
Table 2Pearson’s correlation analysis for body parameters in study participants (n = 899).
|
PBF (%) |
BMI |
Waist (cm) |
Hip (cm) |
Lean mass (%) |
Subcutaneous fat (%) |
PBF (%) |
|
0.548*
|
0.339*
|
0.440*
|
−0.677*
|
0.860*
|
BMI |
0.548*
|
|
0.797*
|
0.847*
|
−0.239*
|
0.521*
|
Waist (cm) |
0.339*
|
0.797*
|
|
0.774*
|
−0.156*
|
0.379*
|
Hip (cm) |
0.440*
|
0.847*
|
0.774*
|
|
−0.132*
|
0.366*
|
Lean mass (%) |
−0.677*
|
−0.239*
|
−0.156*
|
−0.132*
|
|
−0.767*
|
Subcutaneous fat (%) |
0.860*
|
0.521*
|
0.379*
|
0.366*
|
−0.767*
|
|