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Relationship between Body Mass Index and Percent Body Fat in Vietnamese: Implications for the Diagnosis of Obesity.

Ho-Pham LT, Lai TQ, Nguyen MT, Nguyen TV - PLoS ONE (2015)

Bottom Line: PBF was derived as FM over body weight.The prevalence of overweight and obesity combined (BMI ≥25) was ~24% and ~19% in men and women, respectively.We suggest that a PBF >30 in men or PBF >40 in women is used as criteria for the diagnosis of obesity in Vietnamese adults.

View Article: PubMed Central - PubMed

Affiliation: Bone and Muscle Research Division, Faculty of Applied Sciences, Ton DucThang University, Ho Chi Minh City, Vietnam; Department of Internal Medicine, Pham Ngoc Thach University of Medicine, Ho Chi Minh City, Vietnam; Department of Rheumatology, People's Hospital 115, Ho Chi Minh City, Vietnam.

ABSTRACT

Background: The burden of obesity in Vietnam has not been well defined because there is a lack of reference data for percent body fat (PBF) in Asians. This study sought to define the relationship between PBF and body mass index (BMI) in the Vietnamese population.

Methods: The study was designed as a comparative cross-sectional investigation that involved 1217 individuals of Vietnamese background (862 women) aged 20 years and older (average age 47 yr) who were randomly selected from the general population in Ho Chi Minh City. Lean mass (LM) and fat mass (FM) were measured by DXA (Hologic QDR 4500). PBF was derived as FM over body weight.

Results: Based on BMI ≥30, the prevalence of obesity was 1.1% and 1.3% for men and women, respectively. The prevalence of overweight and obesity combined (BMI ≥25) was ~24% and ~19% in men and women, respectively. Based on the quadratic relationship between BMI and PBF, the approximate PBF corresponding to the BMI threshold of 30 (obese) was 30.5 in men and 41 in women. Using the criteria of PBF >30 in men and PBF >40 in women, approximately 15% of men and women were considered obese.

Conclusion: These data suggest that body mass index underestimates the prevalence of obesity. We suggest that a PBF >30 in men or PBF >40 in women is used as criteria for the diagnosis of obesity in Vietnamese adults. Using these criteria, 15% of Vietnamese adults in Ho Chi Minh City was considered obese.

No MeSH data available.


Related in: MedlinePlus

Cumulative distribution of percent body fat for men (dotted line) and women (solid line).
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pone.0127198.g002: Cumulative distribution of percent body fat for men (dotted line) and women (solid line).

Mentions: Based on the estimated parameters of model I, we derived the PBF values corresponding to a BMI for men and women aged 50 years (Table 5). In men, the approximate PBF threshold corresponding to BMI of 18.5, 25, and 30 kg/m2 were 19.1, 27.2, and 30.5, respectively. The corresponding approximate PBF values for women were 30.0, 38.1, and 41.4, respectively. Fig 2shows the cumulative distribution of PBF for men and women. It can be estimated from the figure that approximately 14% of men had PBF greater than 30, and ~15% of women had PBF greater than 40.


Relationship between Body Mass Index and Percent Body Fat in Vietnamese: Implications for the Diagnosis of Obesity.

Ho-Pham LT, Lai TQ, Nguyen MT, Nguyen TV - PLoS ONE (2015)

Cumulative distribution of percent body fat for men (dotted line) and women (solid line).
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4446298&req=5

pone.0127198.g002: Cumulative distribution of percent body fat for men (dotted line) and women (solid line).
Mentions: Based on the estimated parameters of model I, we derived the PBF values corresponding to a BMI for men and women aged 50 years (Table 5). In men, the approximate PBF threshold corresponding to BMI of 18.5, 25, and 30 kg/m2 were 19.1, 27.2, and 30.5, respectively. The corresponding approximate PBF values for women were 30.0, 38.1, and 41.4, respectively. Fig 2shows the cumulative distribution of PBF for men and women. It can be estimated from the figure that approximately 14% of men had PBF greater than 30, and ~15% of women had PBF greater than 40.

Bottom Line: PBF was derived as FM over body weight.The prevalence of overweight and obesity combined (BMI ≥25) was ~24% and ~19% in men and women, respectively.We suggest that a PBF >30 in men or PBF >40 in women is used as criteria for the diagnosis of obesity in Vietnamese adults.

View Article: PubMed Central - PubMed

Affiliation: Bone and Muscle Research Division, Faculty of Applied Sciences, Ton DucThang University, Ho Chi Minh City, Vietnam; Department of Internal Medicine, Pham Ngoc Thach University of Medicine, Ho Chi Minh City, Vietnam; Department of Rheumatology, People's Hospital 115, Ho Chi Minh City, Vietnam.

ABSTRACT

Background: The burden of obesity in Vietnam has not been well defined because there is a lack of reference data for percent body fat (PBF) in Asians. This study sought to define the relationship between PBF and body mass index (BMI) in the Vietnamese population.

Methods: The study was designed as a comparative cross-sectional investigation that involved 1217 individuals of Vietnamese background (862 women) aged 20 years and older (average age 47 yr) who were randomly selected from the general population in Ho Chi Minh City. Lean mass (LM) and fat mass (FM) were measured by DXA (Hologic QDR 4500). PBF was derived as FM over body weight.

Results: Based on BMI ≥30, the prevalence of obesity was 1.1% and 1.3% for men and women, respectively. The prevalence of overweight and obesity combined (BMI ≥25) was ~24% and ~19% in men and women, respectively. Based on the quadratic relationship between BMI and PBF, the approximate PBF corresponding to the BMI threshold of 30 (obese) was 30.5 in men and 41 in women. Using the criteria of PBF >30 in men and PBF >40 in women, approximately 15% of men and women were considered obese.

Conclusion: These data suggest that body mass index underestimates the prevalence of obesity. We suggest that a PBF >30 in men or PBF >40 in women is used as criteria for the diagnosis of obesity in Vietnamese adults. Using these criteria, 15% of Vietnamese adults in Ho Chi Minh City was considered obese.

No MeSH data available.


Related in: MedlinePlus