Title

Consumption of whole-grain cereals during weight loss: Effects on dietary quality, dietary fiber, magnesium, vitamin B-6, and obesity

Authors

Authors

K. J. Melanson; T. J. Angelopoulos; V. T. Nguyen; M. Martini; L. Zukley; J. Lowndes; T. J. Dube; J. J. Fiutem; B. W. Yount;J. M. Rippe

Comments

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Abbreviated Journal Title

J. Am. Diet. Assoc.

Keywords

AMERICAN-DIETETIC-ASSOCIATION; CORONARY-HEART-DISEASE; UNITED-STATES; ENERGY-INTAKE; HOMOCYSTEINE CONCENTRATIONS; BREAKFAST CEREAL; RANDOMIZED-TRIAL; RISK-FACTORS; HEALTH; ADULTS; Nutrition & Dietetics

Abstract

Objective While various weight-management approaches produce weight loss, they may differ in dietary quality. We monitored changes in nutrient intakes in overweight and obese subjects on three different weight-management programs. Design Randomized clinical trial (pilot study) with two 12-week phases: phase 1, weekly counseling; phase 2, monitoring only., Subjects/setting One hundred eighty nonsmoking, sedentary overweight and obese adults began this outpatient study; 134 (body mass index [calculated as kg/ m(2)] = 30.9 +/- 2.4; age = 42.3 +/- 1.2 years) were used in analyses. Intervention Twenty-four weeks of exercise only (control group), hypocaloric diet plus exercise, or hypocaloric diet with fiber-rich whole-grain cereals plus exercise. Main outcome measures At weeks 0, 12, and 24, diet quality was assessed by 3-day food records and body weight was measured. Statistical analyses performed Three-way analysis of variance with repeated measures. Results The hypocaloric diet with fiber-rich whole-grain cereals plus exercise decreased energy intake more than exercise only (P=0.032). By week 12, the hypocaloric diet with fiber-rich whole-grain cereals plus exercise and the hypocaloric diet plus exercise decreased total fat more than exercise only, which was sustained in the hypocaloric diet with fiber-rich whole-grain cereals plus exercise at 24 weeks (P<0.001). At weeks 12 and 24, the hypocaloric diet with fiber-rich whole-grain cereals plus exercise reduced saturated fat intake more than exercise only. The hypocaloric diet with fiber-rich whole-grain cereals plus exercise increased total fiber, insoluble fiber (both P<0.001), magnesium (P=0.004), and vitamin B-6 (P=0.002) intakes more than the hypocaloric diet plus, exercise and exercise only. Calcium and vitamin E intakes were inadequate in all groups. Weight loss was similar in the hypocaloric diet with fiber-rich whole-grain cereals plus exercise and the hypocaloric diet plus exercise. Conclusions Weight-reduction strategies may be associated with reduced intake of micronutrients, such as calcium and vitamin E. However, a hypocaloric diet with fiber-rich whole-grain cereal is effective for improving or maintaining other aspects of dietary quality during weight loss.

Journal Title

Journal of the American Dietetic Association

Volume

106

Issue/Number

9

Publication Date

1-1-2006

Document Type

Article

Language

English

First Page

1380

Last Page

1388

WOS Identifier

WOS:000240322600016

ISSN

0002-8223

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