Energy density and weight change in a long-term weight-loss trial

Andrew Flood; Nathan Mitchell; Melanie Jaeb; Emily A. Finch; Patricia S. Laqua; Ericka M. Welsh; Annie Hotop; Shelby L. Langer; Rona L. Levy; Robert W. Jeffery

doi:10.1186/1479-5868-6-57

Energy density and weight change in a long-term weight-loss trial

Andrew Flood, Nathan Mitchell, Melanie Jaeb, Emily A. Finch, Patricia S. Laqua, Ericka M. Welsh, Annie Hotop, Shelby L. Langer, Rona L. Levy, Robert W. Jeffery

Research output: Contribution to journal › Article › peer-review

21 Scopus citations

Abstract

Background: Health risks linked to obesity and the difficulty most have in achieving weight loss underscore the importance of identifying dietary factors that contribute to successful weight loss. Methods: This study examined the association between change in dietary energy density and weight loss over time. Subjects were 213 men and women with BMI of 30-39 kg/m²and without chronic illness enrolled in 2004 in a randomized trial evaluating behavioral treatments for long-term weight loss. Subjects completed a 62-item food frequency questionnaire at baseline and at 6, 12, and 18 months. Results: Pearson correlations between BMI and energy density (kcals/g of solid food) at baseline were not significantly different from zero (r = -0.02, p = 0.84). In a longitudinal analysis, change in energy density was strongly related to change in BMI. The estimated β for change in BMI (kg/m²) of those in the quartile representing greatest decrease in energy density at 18 months compared to those in the quartile with the least was -1.95 (p = 0.006). The association was especially strong in the first six months (estimated β = -1.43), the period with greatest weight loss (mean change in BMI = -2.50 kg/m²from 0-6 months vs. 0.23 kg/m²from 12-18 months) and the greatest contrast with respect to change in energy density. Conclusion: Decreased energy density predicted weight loss in this 18 month weight loss study. These findings may have important implications for individual dietary advice and public health policies targeting weight control in the general population.

Original language	English (US)
Article number	1479
Pages (from-to)	57
Number of pages	1
Journal	International Journal of Behavioral Nutrition and Physical Activity
Volume	6
DOIs	https://doi.org/10.1186/1479-5868-6-57
State	Published - Aug 14 2009

Bibliographical note

Funding Information:
The research described in this paper was supported by NIH K07 CA108910-01A1 and NIH R01 DK064596. The funding institutions had no role in study design; in the collection, analysis, and interpretation of data; in the writing of the manuscript; and in the decision to submit the manuscript for publication.

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title = "Energy density and weight change in a long-term weight-loss trial",

abstract = "Background: Health risks linked to obesity and the difficulty most have in achieving weight loss underscore the importance of identifying dietary factors that contribute to successful weight loss. Methods: This study examined the association between change in dietary energy density and weight loss over time. Subjects were 213 men and women with BMI of 30-39 kg/m2 and without chronic illness enrolled in 2004 in a randomized trial evaluating behavioral treatments for long-term weight loss. Subjects completed a 62-item food frequency questionnaire at baseline and at 6, 12, and 18 months. Results: Pearson correlations between BMI and energy density (kcals/g of solid food) at baseline were not significantly different from zero (r = -0.02, p = 0.84). In a longitudinal analysis, change in energy density was strongly related to change in BMI. The estimated β for change in BMI (kg/m2) of those in the quartile representing greatest decrease in energy density at 18 months compared to those in the quartile with the least was -1.95 (p = 0.006). The association was especially strong in the first six months (estimated β = -1.43), the period with greatest weight loss (mean change in BMI = -2.50 kg/m2 from 0-6 months vs. 0.23 kg/m2 from 12-18 months) and the greatest contrast with respect to change in energy density. Conclusion: Decreased energy density predicted weight loss in this 18 month weight loss study. These findings may have important implications for individual dietary advice and public health policies targeting weight control in the general population.",

author = "Andrew Flood and Nathan Mitchell and Melanie Jaeb and Finch, {Emily A.} and Laqua, {Patricia S.} and Welsh, {Ericka M.} and Annie Hotop and Langer, {Shelby L.} and Levy, {Rona L.} and Jeffery, {Robert W.}",

note = "Funding Information: The research described in this paper was supported by NIH K07 CA108910-01A1 and NIH R01 DK064596. The funding institutions had no role in study design; in the collection, analysis, and interpretation of data; in the writing of the manuscript; and in the decision to submit the manuscript for publication.",

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AU - Flood, Andrew

AU - Mitchell, Nathan

AU - Jaeb, Melanie

AU - Finch, Emily A.

AU - Laqua, Patricia S.

AU - Welsh, Ericka M.

AU - Hotop, Annie

AU - Langer, Shelby L.

AU - Levy, Rona L.

AU - Jeffery, Robert W.

N1 - Funding Information: The research described in this paper was supported by NIH K07 CA108910-01A1 and NIH R01 DK064596. The funding institutions had no role in study design; in the collection, analysis, and interpretation of data; in the writing of the manuscript; and in the decision to submit the manuscript for publication.

PY - 2009/8/14

Y1 - 2009/8/14

N2 - Background: Health risks linked to obesity and the difficulty most have in achieving weight loss underscore the importance of identifying dietary factors that contribute to successful weight loss. Methods: This study examined the association between change in dietary energy density and weight loss over time. Subjects were 213 men and women with BMI of 30-39 kg/m2 and without chronic illness enrolled in 2004 in a randomized trial evaluating behavioral treatments for long-term weight loss. Subjects completed a 62-item food frequency questionnaire at baseline and at 6, 12, and 18 months. Results: Pearson correlations between BMI and energy density (kcals/g of solid food) at baseline were not significantly different from zero (r = -0.02, p = 0.84). In a longitudinal analysis, change in energy density was strongly related to change in BMI. The estimated β for change in BMI (kg/m2) of those in the quartile representing greatest decrease in energy density at 18 months compared to those in the quartile with the least was -1.95 (p = 0.006). The association was especially strong in the first six months (estimated β = -1.43), the period with greatest weight loss (mean change in BMI = -2.50 kg/m2 from 0-6 months vs. 0.23 kg/m2 from 12-18 months) and the greatest contrast with respect to change in energy density. Conclusion: Decreased energy density predicted weight loss in this 18 month weight loss study. These findings may have important implications for individual dietary advice and public health policies targeting weight control in the general population.

AB - Background: Health risks linked to obesity and the difficulty most have in achieving weight loss underscore the importance of identifying dietary factors that contribute to successful weight loss. Methods: This study examined the association between change in dietary energy density and weight loss over time. Subjects were 213 men and women with BMI of 30-39 kg/m2 and without chronic illness enrolled in 2004 in a randomized trial evaluating behavioral treatments for long-term weight loss. Subjects completed a 62-item food frequency questionnaire at baseline and at 6, 12, and 18 months. Results: Pearson correlations between BMI and energy density (kcals/g of solid food) at baseline were not significantly different from zero (r = -0.02, p = 0.84). In a longitudinal analysis, change in energy density was strongly related to change in BMI. The estimated β for change in BMI (kg/m2) of those in the quartile representing greatest decrease in energy density at 18 months compared to those in the quartile with the least was -1.95 (p = 0.006). The association was especially strong in the first six months (estimated β = -1.43), the period with greatest weight loss (mean change in BMI = -2.50 kg/m2 from 0-6 months vs. 0.23 kg/m2 from 12-18 months) and the greatest contrast with respect to change in energy density. Conclusion: Decreased energy density predicted weight loss in this 18 month weight loss study. These findings may have important implications for individual dietary advice and public health policies targeting weight control in the general population.

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Energy density and weight change in a long-term weight-loss trial

Abstract

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