Estimating intraabdominal adipose tissue in women by dual-energy X-ray absorptiometry

Treuth, Margarita S.; Hunter, Gary R.; Kekes‐Szabo, Tamas

doi:10.1093/ajcn/62.3.527

Cited by 101 publications

(82 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…From this ratio, our newly developed equation was validated with a higher r 2 and a lower RMSE value than the previous equations. 31 The ellipse model constructed from this ratio, as suggested by Kvist et al, 11 did not improve the precision of our predictive equation. The loss of precision of the equation found in some subjects could be due to some unavoidable difference in abdominal positioning or analysis level when using the two techniques.…”

Section: Discussionmentioning

confidence: 61%

Measurement of visceral adipose tissue by DXA combined with anthropometry in obese humans

Bertin

Marcus

Ruiz³

et al. 2000

Int J Obes

View full text Add to dashboard Cite

OBJECTIVE: To get accurate measurements of visceral adipose tissue (VAT) using dual energy X-ray absorptiometry (DXA). DESIGN: DXA and anthropometric data and their combinations were compared to the VAT area calculated from a computed tomography (CT) single scan. SUBJECTS: 71 overweight subjects (44 women, 27 men), age: 16 ± 70 y, BMI: 27 ± 52 kgam 2 . MEASUREMENTS: Total body and segmental tissue composition, and new parameters obtained from DXA, in addition to waist and hip cicumferences and abdominal sagittal diameter measurements. RESULTS: The ratio measured at the umbilical level (sagittal diameter À À subcutaneous fat width) Â (transverse internal diameter)a(height) was closely related to VAT (r 0.94 for women and 0.88 for men). It gave the most predictive equation for VAT: y 79.6x (s.e. 3.9) À À 149 cm 2 for the whole population (r 2 0.86, P`0.0001, root mean square error 38.2 cm 2 . An independent relationship between lean mass or its index (r 0.52 and 0.72, P`0.001) and VAT was also found in women. CONCLUSION: This study demonstrates the potential usefulness of DXA to supply accurate measurements of VAT in addition to total body composition determination in obese subjects.

show abstract

Section: Discussionmentioning

confidence: 61%

Measurement of visceral adipose tissue by DXA combined with anthropometry in obese humans

Bertin

Marcus

Ruiz³

et al. 2000

Int J Obes

View full text Add to dashboard Cite

show abstract

“…14 Sagittal diameter and waist circumference were used in combination with trunkal fat percent and age to calculate an index for intra-abdominal adipose tissue (IAAT, cm 2 ). 15 Body weight was obtained by weighing the subjects in underwear on an electronic scale. Subjects' height was measured without shoes.…”

Section: Methodsmentioning

confidence: 99%

Lower-body fat mass as an independent marker of insulin sensitivity—the role of adiponectin

et al. 2005

View full text Add to dashboard Cite

AIMS:To study the association between lower-body fat and estimates of whole-body insulin sensitivity in middle-aged men with and without a history of juvenile onset obesity, and to determine the possible mediating role of fasting serum adiponectin level as an insulin-sensitizing peptide. METHODS: A total of 401 men aged 39-65 y, body mass index 18-54 kg/m 2 , participated in the study. The following variables were measured on the study participants: regional body fat distribution as assessed by dual energy X-ray absorptiometry, abdominal sagittal diameter, maximal oxygen uptake (VO 2 max), physical activity, fasting and post-glucose load levels of plasma glucose, serum insulin, and blood non-esterified fatty acid plus fasting levels of serum adiponectin and HbA1c. RESULTS: Lower-body fat mass was positively associated with insulin sensitivity as estimated by Matsudas index also after adjusting for age, lean tissue mass, trunkal fat mass, weight changes since draft board examination, VO 2 max and the level of physical activity. In a subgroup of men selected for a large lower-body fat mass, fasting serum insulin concentration was 24% lower (Po0.01) and fasting serum adiponectin 33% higher (Po0.005) compared to a subgroup of men with a small lower-body fat mass but with similar trunkal fat mass. CONCLUSION: Lower-body fat mass is positively associated with an estimate of insulin sensitivity independently of trunkal fat mass in both lean and obese middle-aged men and this effect could partly be statistically explained by variations in serum adiponectin levels.

show abstract

“…The DEXA standard trunk region of interest (ROI) includes chest, abdomen, and pelvis and was used as an indicator of central obesity. The trunk ROI has a high correlation (r ¼ 0.77, Po0.001) with intra-abdominal adipose tissue, as measured by CT 16 and with visceral abdominal fat measured by MRI (r ¼ 0.825, Po0.01). 17 In order to determine whether there was a preferential deposition of fat in the central region, a ratio of central to peripheral distribution of body fat (fat ratio) was computed by dividing the body fat in the conventional DEXA trunk ROI by the combined fat mass in the ROI's that encompass the arms, hips, and legs.…”

Section: Measurementsmentioning

confidence: 96%

Weight, fat mass, and central distribution of fat increase when women use depot-medroxyprogesterone acetate for contraception

et al. 2005

View full text Add to dashboard Cite

OBJECTIVE:To compare longitudinal changes in weight, body fat, and ratio of central to peripheral fat mass among first-time depot-medroxyprogesterone acetate (DMPA) users to women using no hormonal contraception, and to evaluate user characteristics associated with that change. DESIGN: Prospective longitudinal study. SUBJECTS: Healthy women, aged 18-35 y, using DMPA for contraception (n ¼ 178) and women using no hormonal contraception (n ¼ 145). MEASUREMENTS: Weight, body fat, and the central distribution of fat, measured at 3-month intervals for 30 months, by electronic scale and dual-energy X-ray absorptiometry (DEXA). The ratio of central to peripheral distribution of body fat was computed by dividing the body fat in the conventional DEXA trunk region of interest (ROI) by the ROI's that encompass the arms, hips and legs. RESULTS: Women using DMPA had a significantly greater increase in all measures of fatness than women using no hormonal method of contraception (Po0. In contrast, weight, fat mass and the ratio of central to peripheral fat mass of control participants remained virtually unchanged over the same time period. Women with higher baseline physical activity levels had a smaller increase in body fat (P ¼ 0.003) and the fat ratio (P ¼ 0.03), but not weight (P ¼ 0.48). No other user characteristics including, smoking, past oral contraceptive use or previous pregnancies predicted change in level of fatness. CONCLUSIONS: This study has demonstrated a change in body composition toward greater fatness and toward a central redistribution of fat among DMPA users as compared to controls and provides important information to be used when counseling women regarding contraceptive methods. Given the potential long-term implication of these changes, further study is recommended to determine whether the gains in fatness are reversed following DMPA discontinuation and to examine the role of progestins in the development and maintenance of obesity.

show abstract

Estimating intraabdominal adipose tissue in women by dual-energy X-ray absorptiometry

Cited by 101 publications

References 28 publications

Measurement of visceral adipose tissue by DXA combined with anthropometry in obese humans

Measurement of visceral adipose tissue by DXA combined with anthropometry in obese humans

Lower-body fat mass as an independent marker of insulin sensitivity—the role of adiponectin

Weight, fat mass, and central distribution of fat increase when women use depot-medroxyprogesterone acetate for contraception

Contact Info

Product

Resources

About