caa a22 4500 465769136 CHVBK 20180323111924.0 cr unu---uuuuu 170327e19900301xx s 000 0 eng 10.1007/BF00155550 doi (NATIONALLICENCE)springer-10.1007/BF00155550 Intra and inter-person sources of variability in fat intake in a feeding trial of 14 men [Elektronische Daten] [J. Hebert, J. Chen Backlund, A. Engle, J. Barone, K. Biener] An impediment to analyzing the effect of nutritional factors on biologic processes or health status in human populations arises from the relatively small dietary differences that exist between individuals in relation to large periodic fluctuations in dietary intake and the imprecision with which diet is normally assessed. We report here on characteristics of dietary variability in a group of 14 young men who successfully completed an intervention study specifically designed to create large differences in fat intake between baseline and two dietary intervention-periods each lasting two months (during which safflower and coconut oil supplements were given). We found that in the second supplemental phase of the intervention inter-person sources of variability were greatly increased over the low-fat baseline values. For proportion of calories as fat it increased to 64.2% of total variance from 21.6% without supplementation; for saturated fatty acids, 47.3% from 17.7%; for polyunsaturated fatty acids, 62.4% from 22.8%; and for the P:S ratio, 71.5% from 21.6%. During the first intervention phase we observed only moderate changes. Reasons for the intervention phase differences in effect, implications for feeding trials designed to look at dietary fat effects, and the need for future studies aimed at clarifying these results are discussed. Kluwer Academic Publishers, 1990 Dietary variability nationallicence Fat intake nationallicence Hebert J. Division of Epidemiology, American Health Foundation, 320 East 43rd Street, 10017, New York, NY, USA aut Chen Backlund J. Division of Epidemiology, American Health Foundation, 320 East 43rd Street, 10017, New York, NY, USA aut Engle A. Division of Nutrition and Endocrinology, American Health Foundation, One Dana Road, 10595, Valhalla, NY, USA aut Barone J. Division of Epidemiology, American Health Foundation, 320 East 43rd Street, 10017, New York, NY, USA aut Biener K. Division of Epidemiology, American Health Foundation, 320 East 43rd Street, 10017, New York, NY, USA aut European Journal of Epidemiology Kluwer Academic Publishers 6/1(1990-03-01), 55-60 0393-2990 6:1<55 1990 6 10654 https://doi.org/10.1007/BF00155550 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00155550 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hebert J. Division of Epidemiology, American Health Foundation, 320 East 43rd Street, 10017, New York, NY, USA aut NATIONALLICENCE 700 1- Chen Backlund J. Division of Epidemiology, American Health Foundation, 320 East 43rd Street, 10017, New York, NY, USA aut NATIONALLICENCE 700 1- Engle A. Division of Nutrition and Endocrinology, American Health Foundation, One Dana Road, 10595, Valhalla, NY, USA aut NATIONALLICENCE 700 1- Barone J. Division of Epidemiology, American Health Foundation, 320 East 43rd Street, 10017, New York, NY, USA aut NATIONALLICENCE 700 1- Biener K. Division of Epidemiology, American Health Foundation, 320 East 43rd Street, 10017, New York, NY, USA aut NATIONALLICENCE 773 0- European Journal of Epidemiology Kluwer Academic Publishers 6/1(1990-03-01), 55-60 0393-2990 6:1<55 1990 6 10654 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer