{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,8,6]],"date-time":"2025-08-06T12:03:47Z","timestamp":1754481827111},"reference-count":25,"publisher":"Springer Science and Business Media LLC","issue":"1","content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Nutr Metab (Lond)"],"published-print":{"date-parts":[[2006,12]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Objective<\/jats:title><jats:p>To compare the accuracy of air displacement plethysmography (ADP) and dual energy x-ray absorptionmetry (DXA) in tracking changes in body composition after a 16 month weight loss intervention in overweight and obese females.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>93 healthy female subjects (38.9 \u00b1 5.7 yr, 159.8 \u00b1 5.6 cm, 76.7 \u00b1 9.9 kg, 30.0 \u00b1 3.4 kg\/m<jats:sup>2<\/jats:sup>) completed a 16 month weight loss intervention. Eligible subjects attended 15 treatment sessions occurring over the course of 4 months with educational content including topics relating to physical activity and exercise, diet and eating behavior, and behavior modification. In the remaining 12 months, subjects underwent a lifestyle program designed to increase physical activity and improve eating habits. Before and after the intervention, subjects had their percent body fat (%fat), fat mass (FM), and fat-free mass (FFM)) assessed by DXA and ADP.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Significant differences (p \u2264 0.001) were found between DXA and ADP at baseline %fat (46.0 % fat<jats:italic>vs<\/jats:italic>. 42.0 % fat), FM (35.3 kg<jats:italic>vs<\/jats:italic>. 32.5 kg) and FFM (40.8 kg<jats:italic>vs<\/jats:italic>. 44.2 kg) as well as at post intervention for %fat (42.1% fat<jats:italic>vs<\/jats:italic>. 38.3 % fat), FM (30.9 kg<jats:italic>vs<\/jats:italic>. 28.4 kg) and FFM (41.7 kg<jats:italic>vs<\/jats:italic>. 44.7 kg). At each time point, ADP %fat and total FM was significantly lower (p \u2264 0.001) than DXA while FFM was significantly higher (p \u2264 0.001). However, both techniques tracked %fat changes similarly considering that there were no differences between the two means. Furthermore, a Bland-Altman analysis was performed and no significant bias was observed, thus demonstrating the ability of ADP to measure body fat across a wide range of fatness.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>At baseline and post weight loss, a significant difference was found between ADP and DXA. However, the results indicate both methods are highly related and track changes in %fat similarly after a weight loss program in overweight and obese females. Additionally, the mean changes in %fat were similar between the two techniques, suggesting that ADP can be translated to its use in clinical practice and research studies as DXA currently is used.<\/jats:p><\/jats:sec>","DOI":"10.1186\/1743-7075-3-32","type":"journal-article","created":{"date-parts":[[2006,8,22]],"date-time":"2006-08-22T18:16:19Z","timestamp":1156270579000},"update-policy":"http:\/\/dx.doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":20,"title":["Validity of air-displacement plethysmography in the assessment of body composition changes in a 16-month weight loss program"],"prefix":"10.1186","volume":"3","author":[{"given":"Cl\u00e1udia S","family":"Minderico","sequence":"first","affiliation":[]},{"given":"Analiza M","family":"Silva","sequence":"additional","affiliation":[]},{"given":"Pedro J","family":"Teixeira","sequence":"additional","affiliation":[]},{"given":"Luis B","family":"Sardinha","sequence":"additional","affiliation":[]},{"given":"Holly R","family":"Hull","sequence":"additional","affiliation":[]},{"given":"David A","family":"Fields","sequence":"additional","affiliation":[]}],"member":"297","published-online":{"date-parts":[[2006,8,22]]},"reference":[{"key":"83_CR1","doi-asserted-by":"publisher","first-page":"228S","DOI":"10.1038\/oby.2001.123","volume":"9 Suppl 4","author":"PT James","year":"2001","unstructured":"James PT, Leach R, Kalamara E, Shayeghi M: The worldwide obesity epidemic. 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