Evaluation of a food frequency questionnaire with weighed records, fatty acids, and alpha-tocopherol in adipose tissue and serum.
The authors examined the validity of a self-administered 180-item food frequency questionnaire in 125 Norwegian men aged 20-55 years who filled in the questionnaire and completed 14-day weighed records in fall 1995 to winter 1995/6. Spearman correlation coefficients between the two measurements ranged from 0.42 for percent of energy from fat to 0.66 for sugar intake (median r = 0.51). On average, 39% of the men were classified in the same quartile with the two methods, and 3% in the opposite quartile. Correlation coefficients between intake of fatty acids estimated from the questionnaire and the relative amounts of fatty acids in adipose tissue were: linoleic acid (18:2, n-6), r = 0.38; alpha-linolenic acid (18:3, n-3), r = 0.42; eicosapentaenoic acid (20:5, n-3), r = 0.52; and docosahexaenoic acid (22:6, n-3), r = 0.49. The correlations for these fatty acids between the total serum lipids and the diet were 0.16, 0.28, 0.51 and 0.52, respectively. The data suggest that very-long-chain n-3 fatty acids in adipose tissue and total serum lipids reflect the dietary intake of very-long-chain n-3 fatty acids to the same degree. No associations were observed between intake of alpha-tocopherol and concentration in adipose tissue and serum.
Institute for Nutrition Research, University of Oslo, Norway.
L F
LF
Andersen
K
K
Solvoll
L R
LR
Johansson
I
I
Salminen
A
A
Aro
C A
CA
Drevon
D000273:Adipose Tissue / Q000737:chemistry*; D000328:Adult; D001706:Biopsy; D015930:Diet Records; D004034:Diet Surveys; D004281:Docosahexaenoic Acids / Q000032:analysis / Q000097:blood; D015118:Eicosapentaenoic Acid / Q000032:analysis / Q000097:blood; D002149:Energy Intake; D004734:Energy Metabolism; D005227:Fatty Acids / Q000032:analysis* / Q000097:blood*; D006801:Humans; D019787:Linoleic Acid / Q000032:analysis / Q000097:blood; D008297:Male; D008875:Middle Aged; D015203:Reproducibility of Results; D018709:Statistics, Nonparametric; D011795:Surveys and Questionnaires / Q000592:standards*; D014810:Vitamin E / Q000032:analysis* / Q000097:blood*
D005227:Fatty Acids; D014810:Vitamin E; D004281:Docosahexaenoic Acids; D019787:Linoleic Acid; D015118:Eicosapentaenoic Acid