[Relationship of different types of abdominal obesity to risk of metabolic syndrome].
OBJECTIVE
To explore the relationship of different types of abdominal obesity to risk of metabolic syndrome (MS).


METHODS
Visceral fat area (VA) and substantial fat area (SA) were assessed by CT in 846 patients, 470 males and 376 females, aged 55 +/- 12, who suffered from at least one cardiometabolic risk factor and divided into 4 groups according to their VA and waist circumference (WC): non-obesity, masked visceral fat obesity (VFO), pseudo-VFO, and VFO groups. Blood pressure, fasting blood glucose, fasting serum insulin, and lipid profile were also measured. The MS risks of different types of abdominal obesity were compared.


RESULTS
The prevalence rate of masked VFO of males was 10.9% (51/470), significantly higher than that of female (4.8%, 18/376). The prevalence rate of MS of the male patients with masked VFO was 43.1%, significantly higher than that of those in non-obesity group (25.0%), and lower than those of the males in the pseudo-VFO group (78.7%) and in the VFO group (88.6%), whereas the MS prevalence rate of the males in the pseudo-VFO group was significantly higher than those in the non-obesity and masked VFO groups. On the other hand, the MS prevalence rate of the female patients with masked VFO was 33.3%, not significantly different from that of the female patients in the non-obesity group (31.2%), but significantly lower than those of the pseudo-VFO and VFO groups (78.7% and 90.9% respectively). The MS prevalence rate of the female pseudo-VFO patients was also significantly higher than those in the non-obesity and masked VFO groups. Logistic regression analysis showed that WC and VA were independent risk factors for MS [OR (95% CI) = 1.13 (1.10-1.17), 1.01 (1.01-1.02), respectively, P < 0.01).


CONCLUSIONS
Different types of abdominal obesity have important impacts on the risk of metabolic syndrome. Masked VFO, even though with normal WC, and pseudo-VFO have considerably higher cardiometabolic risks.
He
Hong-bo
HB
Department of Hypertension and Endocrinology, Daping Hospital, Third Military Medical University, Chongqing 400042, China.
Zhao
Zhi-gang
ZG
Pu
Yun-fei
YF
Chen
Jing
J
Ni
Yin-xing
YX
Zhong
Jian
J
Liu
Hao-yu
HY
Li
Ying-sha
YS
Yan
Zhen-cheng
ZC
Liu
Dao-yan
DY
Zhu
Zhi-ming
ZM
D050153:Abdominal Fat / Q000378:metabolism; D000328:Adult; D000368:Aged; D001786:Blood Glucose / Q000378:metabolism; D050218:Body Fat Distribution; D015992:Body Mass Index; D005260:Female; D006801:Humans; D007333:Insulin Resistance; D050152:Intra-Abdominal Fat / Q000378:metabolism*; D008297:Male; D008659:Metabolic Diseases / Q000097:blood / Q000150:complications* / Q000378:metabolism; D008875:Middle Aged; D009765:Obesity / Q000145:classification / Q000150:complications* / Q000378:metabolism; D012307:Risk Factors; D013577:Syndrome; D049629:Waist-Hip Ratio
D001786:Blood Glucose