title: Estimation of daily human intake of food flavonoids.
abstract: The daily intake of food flavonoids was determined using a semiquantitative food frequency questionnaire (FFQ) and a 4-day food record (4DFR) in a group of 45 female Flemish dietitians. The subjects were asked to report their food intake three times: day 1 using the FFQ (FFQ1); between days 2 and 13 using a 4-day non-consecutive food diary (4DFR); and again using the FFQ on day 14 (FFQ2). The total flavonoid intakes (mean and standard deviation) as estimated with the different methods were: for FFQ1, 166.0 +/- 146.6 mg/day; for 4DFR, 203.0 +/- 243.2 mg/day; and for FFQ2, 158.3 +/- 151.8 mg/day. There was a significant different estimate for the amount of flavan-3-ols, flavanones and flavones when comparing the two FFQs with the 4DFR. The two research methods classified 88% of the 45 dietitians in the same or in an adjacent quartile for total flavonoid intake. The findings of this study indicate that the developed FFQ seems to be a simple and reliable method to assign subjects in quartiles of flavonoid intake.
authors.affiliation: Faculty of Physical Education and Physiotherapy, Department of Human Biometry and Biomechanics, Vrije Universiteit Brussel (VUB), Brussels, Belgium. patrick.mullie@skynet.be
authors.forename: Patrick
authors.initials: P
authors.lastname: Mullie
authors.forename: Peter
authors.initials: P
authors.lastname: Clarys
authors.forename: Peter
authors.initials: P
authors.lastname: Deriemaeker
authors.forename: Marcel
authors.initials: M
authors.lastname: Hebbelinck
mesh_terms: D000328:Adult; D000368:Aged; D016208:Databases, Factual; D015930:Diet Records; D004034:Diet Surveys; D005247:Feeding Behavior; D005260:Female; D005419:Flavonoids / Q000008:administration & dosage* / Q000032:analysis; D005504:Food Analysis; D006801:Humans; D008875:Middle Aged; D018709:Statistics, Nonparametric; D011795:Surveys and Questionnaires
chemical_list: D005419:Flavonoids