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

Industry Collaboration

cited authors

  • Melanson, Kathleen J., Angelopoulos, Theodore J., Nguyen, Von T., Martini, Margaret, Zukley, Linda, Lowndes, Joshua, Dube, Thomas J., Fiutem, Justin J., Yount, Byron W., Rippe, James M.

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.

Publication Date

  • September 1, 2006

webpage

published in

category

start page

  • 1380

end page

  • 1388

volume

  • 106

issue

  • 9

WoS Citations

  • 63

WoS References

  • 61