| Brief telephone intervention increases soy intake in peri- and postmenopausal US women: the Herbal Alternatives Trial (HALT). | |
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MedLine Citation:
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PMID: 20656094 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: Effective dietary intervention strategies that can be widely disseminated and have the potential for sustainable dietary modifications are needed. The purpose of this study was to describe and evaluate the effectiveness of a telephone-based soy intervention. DESIGN: A randomized controlled trial comparing self-reported intake and serum measures of soy during a 1-year dietary soy (Soy) to fruit and vegetable (Placebo) intervention conducted in two of five arms from the Herbal Alternatives Trial between May 2001 and September 2004. SUBJECTS/SETTING: One hundred sixty-three peri- and postmenopausal women (mean age=52 years) consuming self-selected diets in the Pacific Northwest, United States. INTERVENTION: Five telephone contacts with a registered dietitian during a 12-month intervention with the goal to increase soy food consumption to two servings daily. MAIN OUTCOME MEASURES: Change from baseline in self-reported soy servings and serum isoflavone (daidzein and genistein) concentrations were estimated using analysis of variance and generalized estimating equations. Proportions of participants achieving the intervention goal were compared using chi(2) tests. RESULTS: Ninety-four percent (n=74) of participants in the Soy arm and 89% (n=75) in the Placebo arm completed the trial, and slightly more than one third (n=27) received five phone contacts. Mean (+/-standard deviation) intakes of soy were similar for the Soy and Placebo arms at baseline (0.6+/-1.0 vs 0.4+/-0.8 servings/day; P>0.05). At 12-month follow-up visit, mean+/-standard deviation servings of soy per day were 1.6+/-1.4 for the Soy intervention compared to 0.5+/-0.9 within the Placebo arm (P<0.001). There were concomitant increases in serum isoflavones at 3 and 6 months from baseline in the Soy arm only, with approximately twofold increases in both daidzein (mean=66.4 nmol/L, 95% confidence interval [CI]: 39.0 to 93.9 [mean 16.9 ng/mL, 95% CI: 9.9 to 23.8]) and genistein (mean=100.4 nmol/L, 95% CI: 60.9 to 139.9 [mean 27.1 ng/mL, 95% CI: 16.5 to 37.8]) concentrations. Mean weight changed by <1 kg during the 12-month period in each group and physical activity remained stable, suggesting that participants incorporated soy foods into their diet by substituting for non soy foods rather than adding them to their diet. CONCLUSIONS: A brief telephone-based intervention with a focused message delivered by a registered dietitian is a feasible approach for encouraging targeted dietary changes, such as an increase in soy intake among peri- and postmenopausal women. |
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Authors:
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Jeannette M Beasley; Jeannette M Schenk; Evette Ludman; Johanna W Lampe; Susan D Reed; Lou Grothaus; Katherine M Newton |
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Publication Detail:
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Type: Journal Article; Randomized Controlled Trial; Research Support, N.I.H., Extramural |
Journal Detail:
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Title: Journal of the American Dietetic Association Volume: 110 ISSN: 1878-3570 ISO Abbreviation: J Am Diet Assoc Publication Date: 2010 Aug |
Date Detail:
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Created Date: 2010-07-26 Completed Date: 2010-08-19 Revised Date: 2011-08-03 |
Medline Journal Info:
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Nlm Unique ID: 7503061 Medline TA: J Am Diet Assoc Country: United States |
Other Details:
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Languages: eng Pagination: 1189-97 Citation Subset: AIM; IM |
Copyright Information:
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2010 American Dietetic Association. Published by Elsevier Inc. All rights reserved. |
Affiliation:
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Fred Hutchinson Cancer Research Center, 1100 Fairview Ave, N M3-A410, PO Box 19024, Seattle, WA 98109-1024, USA. jbeasley@whi.org |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Analysis of Variance Chi-Square Distribution Counseling / methods* Dietetics / methods* Female Fruit Genistein / administration & dosage, blood Health Promotion / methods Humans Isoflavones / administration & dosage, blood* Middle Aged Perimenopause / blood Phytoestrogens / administration & dosage, blood Postmenopause / blood Self Disclosure Soy Foods* Telephone* United States Vegetables |
| Grant Support | |
ID/Acronym/Agency:
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R01AG17057/AG/NIA NIH HHS; T32 AG027677/AG/NIA NIH HHS |
| Chemical | |
Reg. No./Substance:
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0/Isoflavones; 0/Phytoestrogens; 446-72-0/Genistein; 486-66-8/daidzein |
| Comments/Corrections | |
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