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How Does the DRI and Other Prediction Equations for Energy Intake Compare to Energy Fed?
Author(s) -
Souza Elaine,
Keim Nancy L.,
Adams Sean H,
Watson Julie,
Stoffel Sara,
Burnett Dustin,
Blankenship Jeanne,
Van Loan Marta D
Publication year - 2010
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fasebj.24.1_supplement.555.6
Subject(s) - calorie , overweight , mathematics , zoology , body weight , low calorie diet , weight loss , obesity , demography , medicine , endocrinology , biology , sociology
Assessing energy needs is critical to dietary prescriptions for weight loss. We compared estimated calories from the Dietary Reference Intakes (DRI) equation and other accepted equations [Harris‐Benedict (HB) and Mifflin‐St.Jeor (MSJ)] to calories Fed in a controlled feeding study. Caloric needs were calculated for 79 overweight and obese (BMI: 27.5 – 37.5) women (n=56) and men (n=23) in a controlled feeding study. Calories were based on the DRI equation and adjusted during the controlled feeding period to maintain body weight (WT). WT was measured daily in the fasted state with clothing and without shoes. Calories were adjusted after 5 days of a consistent upward or downward slope in WT; further adjustments were made if body weight did not stabilize. WT stabilization was achieved in 21 days. Comparison between actual Fed calories and predicted calories from DRI, HB and MSJ equations are in Table 1.Fed DRI Harris‐Benedict Mifflin‐ St. JeorMean 2585.9 2580.2 2506.8 2384.0 STD 416.8 412.6 451.7 401.9Significant correlations were observed among Fed calories and predicted calories for DRI (R 2 = 0.97), HB (R 2 =0.85) and MSJ (R 2 = 0.82). MSJ equation under estimated calories in 57% of people by −100 to −600 kcal/d. HB deviations in estimated calories ranged from +220 to −400 kcal/d in 49% of subjects. DRI estimated calories had the fewest deviations; 16.5% of subjects ranging from +200 kcal/d to −200 kcal/d. Funding: National Dairy Council, USDA, ARS, WHNRC, Dairy Council of California, CTS, Clinical Research Center, University of California (1M01RR19975‐01), and National Center for Medical Research (UL1 RR024146)