COMPARISON OF ENERGY INTAKES DETERMINED BY FOOD RECORDS AND DOUBLY LABELED WATER IN WOMEN PARTICIPATING IN A DIETARY-INTERVENTION TRIAL

Citation
Lj. Martin et al., COMPARISON OF ENERGY INTAKES DETERMINED BY FOOD RECORDS AND DOUBLY LABELED WATER IN WOMEN PARTICIPATING IN A DIETARY-INTERVENTION TRIAL, The American journal of clinical nutrition, 63(4), 1996, pp. 483-490
Citations number
45
Categorie Soggetti
Nutrition & Dietetics
ISSN journal
00029165
Volume
63
Issue
4
Year of publication
1996
Pages
483 - 490
Database
ISI
SICI code
0002-9165(1996)63:4<483:COEIDB>2.0.ZU;2-W
Abstract
The accuracy of estimates of usual energy intake derived from food rec ords in participants of a long-term dietary-intervention trial was stu died in a subset of 29 women aged 48.7 +/- 5.0 y and weighing 61.9 +/- 6.5 kg. This sample was similar to the population in the whole trial (n = 715), from which it was selected in terms of age, weight, body ma ss index (BMI), and reported energy and fat intakes. During the valida tion study, reported energy intake was derived from 7 consecutive days of food records, and total energy expenditure was measured by the dou bly labeled water method over 13 d. Reported energy intake (6.98 +/- 1 .58 MJ/d) was significantly lower than energy expenditure (9.00 +/- 2. 08 MJ/d) and represented 79.8 +/- 17.6% of expenditure. The correlatio n between reported energy intake and expenditure was 0.46 (P = 0.01, 9 5% CI: 0.15, 0.71). Body weight, BMI, height, length of time in the di etary trial, and percentage of energy from fat and carbohydrate were n ot significantly associated with the accuracy of reporting. These resu lts indicate that energy intake derived from food records is an imprec ise measure that substantially underestimates energy intake in middle- aged women participating in a long-term dietary-intervention trial.