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Assessing validity of a short food frequency questionnaire on present dietary intake of elderly Icelanders.

https://arctichealth.org/en/permalink/ahliterature126210
Source
Nutr J. 2012;11:12
Publication Type
Article
Date
2012
Author
Tinna Eysteinsdottir
Inga Thorsdottir
Ingibjorg Gunnarsdottir
Laufey Steingrimsdottir
Author Affiliation
Unit for Nutrition Research, University of Iceland and Landspitali National-University Hospital, Reykjavik, Iceland. tinnaey@landspitali.is
Source
Nutr J. 2012;11:12
Date
2012
Language
English
Publication Type
Article
Keywords
Aged
Animals
Cod Liver Oil
Coffee
Dairy Products
Diet - statistics & numerical data
Diet Records
Diet Surveys
Energy intake
Female
Food Habits
Fruit
Geriatric Assessment
Humans
Iceland
Interviews as Topic
Male
Meat
Nutrition Assessment
Questionnaires - standards
Sex Factors
Tea
Vegetables
Abstract
Few studies exist on the validity of food frequency questionnaires (FFQs) administered to elderly people. The aim of this study was to assess the validity of a short FFQ on present dietary intake, developed specially for the AGES-Reykjavik Study, which includes 5,764 elderly individuals. Assessing the validity of FFQs is essential before they are used in studies on diet-related disease risk and health outcomes.
128 healthy elderly participants (74 y ± 5.7; 58.6% female) answered the AGES-FFQ, and subsequently filled out a 3-day weighed food record. Validity of the AGES-FFQ was assessed by comparing its answers to the dietary data obtained from the weighed food records, using Spearman's rank correlation, Chi-Square/Kendall's tau, and a Jonckheere-Terpstra test for trend.
For men a correlation = 0.4 was found for potatoes, fresh fruits, oatmeal/muesli, cakes/cookies, candy, dairy products, milk, pure fruit juice, cod liver oil, coffee, tea and sugar in coffee/tea (r = 0.40-0.71). A lower, but acceptable, correlation was also found for raw vegetables (r = 0.33). The highest correlation for women was found for consumption of rye bread, oatmeal/muesli, raw vegetables, candy, dairy products, milk, pure fruit juice, cod liver oil, coffee and tea (r = 0.40-0.61). An acceptable correlation was also found for fish topping/salad, fresh fruit, blood/liver sausage, whole-wheat bread, and sugar in coffee/tea (r = 0.28-0.37). Questions on meat/fish meals, cooked vegetables and soft drinks did not show a significant correlation to the reference method. Pearson Chi-Square and Kendall's tau showed similar results, as did the Jonckheere-Terpstra trend test.
A majority of the questions in the AGES-FFQ had an acceptable correlation and may be used to rank individuals according to their level of intake of several important foods/food groups. The AGES-FFQ on present diet may therefore be used to study the relationship between consumption of several specific foods/food groups and various health-related endpoints gathered in the AGES-Reykjavik Study.
Notes
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PubMed ID
22413931 View in PubMed
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[Biological markers for the intake of fruit and vegetables].

https://arctichealth.org/en/permalink/ahliterature200175
Source
Tidsskr Nor Laegeforen. 1999 Sep 30;119(23):3421-6
Publication Type
Article
Date
Sep-30-1999
Author
L F Andersen
Author Affiliation
Institutt for ernaeringsforskning, Universitetet i Oslo.
Source
Tidsskr Nor Laegeforen. 1999 Sep 30;119(23):3421-6
Date
Sep-30-1999
Language
Norwegian
Publication Type
Article
Keywords
Biological Markers - blood
Carotenoids - blood
Diet Surveys
Eating
Female
Fruit
Humans
Male
Norway
Vegetables
Abstract
No available dietary assessment method is without error in measuring dietary intake. This has led to an increased interest in biological markers of dietary intake. This article is a review of the literature investigating whether the concentration of carotenoids in blood can serve as biological markers for the intake of fruit and vegetables. The literature indicates an association between intake of fruit and vegetables and the concentration of total carotenoids, alfa-carotene, beta-carotene, lutein and beta-cryptoxanthin in plasma. The same association was not observed for plasma lycopene. Results from several studies also indicate that plasma alfa-carotene and plasma total carotenoids are more suitable as biological markers of the intake of fruit and vegetables than the other carotenoids. As there are large individual variations in the plasma carotenoid response after intake, carotenoids in blood will be a better marker of intake at group level than individual level. Furthermore, the average value from several measurements of carotenoids in blood will be a better marker of long-term intake than a single measurement. Several factors in addition to fruit and vegetables influence the concentration of carotenoids in blood. It is important to assess these factors when carotenoids in blood are used as biological markers of the intake of fruit and vegetables.
PubMed ID
10553339 View in PubMed
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[Diet of six-year-old Icelandic children - National dietary survey 2011-2012].

https://arctichealth.org/en/permalink/ahliterature117006
Source
Laeknabladid. 2013 Jan;99(1):17-23
Publication Type
Article
Date
Jan-2013
Author
Ingibjorg Gunnarsdottir
Hafdis Helgadottir
Birna Thorisdottir
Inga Thorsdottir
Author Affiliation
University of Iceland, Iceland. ingigun@hi.is
Source
Laeknabladid. 2013 Jan;99(1):17-23
Date
Jan-2013
Language
Icelandic
Geographic Location
Iceland
Publication Type
Article
Keywords
Age Factors
Child
Child Behavior
Child Nutritional Physiological Phenomena
Dairy Products
Diet
Dietary Fats
Dietary Fiber
Dietary Sucrose
Energy intake
Food Habits
Fruit
Humans
Iceland
Minerals
Nutrition Assessment
Nutrition Policy
Nutrition Surveys
Nutritional Status
Seafood
Vegetables
Vitamins
Abstract
Knowledge of dietary habits makes the basis for public nutrition policy. The aim of this study was to assess dietary intake of Icelandic six-year-olds.
Subjects were randomly selected six-year-old children (n=162). Dietary intake was assessed by three-day-weighed food records. Food and nutrient intake was compared with the Icelandic food based dietary guidelines (FBDG) and recommended intake of vitamins and minerals.
Fruit and vegetable intake was on average 275±164 g/d, and less than 20% of the subjects consumed =400 g/day. Fish and cod liver oil intake was in line with the FBDG among approximately 25% of subjects. Most subjects (87%) consumed at least two portions of dairy products daily. Food with relatively low nutrient density (cakes, cookies, sugar sweetened drinks, sweets and ice-cream) provided up to 25% of total energy intake. The contribution of saturated fatty acids to total energy intake was 14.1%. Less than 20% of the children consumed dietary fibers in line with recommendations, and for saturated fat and salt only 5% consumed less than the recommended upper limits. Average intake of most vitamins and minerals, apart from vitamin-D, was higher than the recommended intake.
Although the vitamin and mineral density of the diet seems adequate, with the exception of vitamin-D, the contribution of low energy density food to total energy intake is high. Intake of vegetables, fruits, fish and cod liver oil is not in line with public recommendations. Strategies aiming at improving diet of young children are needed.
PubMed ID
23341402 View in PubMed
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Do descriptive norms related to parents and friends predict fruit and vegetable intake similarly among 11-year-old girls and boys?

https://arctichealth.org/en/permalink/ahliterature271271
Source
Br J Nutr. 2016 Jan 14;115(1):168-75
Publication Type
Article
Date
Jan-14-2016
Author
Elviira Lehto
Carola Ray
Ari Haukkala
Agneta Yngve
Inga Thorsdottir
Eva Roos
Source
Br J Nutr. 2016 Jan 14;115(1):168-75
Date
Jan-14-2016
Language
English
Publication Type
Article
Keywords
Attitude
Child
Diet - standards
Eating
Energy intake
Female
Finland
Food Habits
Food Preferences
Friends
Fruit
Humans
Male
Parents
Sex Factors
Social Environment
Surveys and Questionnaires
Vegetables
Abstract
We examined whether there are sex differences in children's fruit and vegetable (FV) intake and in descriptive norms (i.e. perceived FV intake) related to parents and friends. We also studied whether friends' impact is as important as that of parents on children's FV intake. Data from the PRO GREENS project in Finland were obtained from 424 children at the age 11 years at baseline. At baseline, 2009 children filled in a questionnaire about descriptive norms conceptualised as perceived FV intake of their parents and friends. They also filled in a validated FFQ that assessed their FV intake both at baseline and in the follow-up in 2010. The associations were examined with multi-level regression analyses with multi-group comparisons. Girls reported higher perceived FV intake of friends and higher own fruit intake at baseline, compared with boys, and higher vegetable intake both at baseline and in the follow-up. Perceived FV intake of parents and friends was positively associated with both girls' and boys' FV intake in both study years. The impact of perceived fruit intake of the mother was stronger among boys. The change in children's FV intake was affected only by perceived FV intake of father and friends. No large sex differences in descriptive norms were found, but the impact of friends on children's FV intake can generally be considered as important as that of parents. Future interventions could benefit from taking into account friends' impact as role models on children's FV intake.
PubMed ID
26450715 View in PubMed
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Modulation of COX-2 expression in peripheral blood cells by increased intake of fruit and vegetables?

https://arctichealth.org/en/permalink/ahliterature17180
Source
Eur J Clin Nutr. 2005 Apr;59(4):597-602
Publication Type
Article
Date
Apr-2005
Author
K. Almendingen
A. Brevik
D A Nymoen
H T Hilmarsen
P A Andresen
L F Andersen
M. Vatn
Author Affiliation
Medical Department, Rikshospitalet University Hospital, 0027 Oslo, Norway. kari.almendingen@labmed.uio.no
Source
Eur J Clin Nutr. 2005 Apr;59(4):597-602
Date
Apr-2005
Language
English
Publication Type
Article
Keywords
Adult
Blood Cells - physiology
Cross-Over Studies
Cyclooxygenase 2
Female
Fruit
Gene Expression - physiology
Humans
Male
Membrane Proteins
Norway
Prostaglandin-Endoperoxide Synthases - blood - genetics
RNA, Messenger - blood - genetics
Research Support, Non-U.S. Gov't
Reverse Transcriptase Polymerase Chain Reaction - methods
Students
Vegetables
Abstract
BACKGROUND: Enhanced cyclooxygenase-2 (COX-2) expression is associated with carcinogenesis, ischemia, angiogenesis, inflammation, and neurodegeneration. The preventing effect of aspirin and nonsteroidal anti-inflammatory drugs is partly due to inhibition of the COX-2 enzyme. Fruit and vegetables (FVs) contain numerous compounds that may decrease disease risk by several different mechanisms, for example through the inhibition of COX-2 activity. OBJECTIVE: We tested the hypothesis that an increased intake of FVs would modulate the COX-2 expression in peripheral blood cells. DESIGN: A strictly controlled dietary crossover study (n = 39). After 1 week run-in period with no FVs in the diet, one group was given two portions of FVs (2 FV), while another group was given five portions (5 FV) daily for 14 days. Following a 2 weeks washout period and 1 week run-in, the regimens were switched between the groups. Gene expression analysis of COX-2 mRNA in blood samples was performed by quantitative real-time-PCR. RESULTS: No significant treatment effect of diet intervention was found in the crossover analyses (P = 0.74). However, the individual variation in response may seem large. CONCLUSIONS: These data does not contradict the recommendations for an increased intake of FVs. Further studies on expression directly and indirectly, through analysis of factors regulating and being regulated by COX-2, should be carried out. A first step would be to evaluate the correspondence between COX-2 mRNA expression and products of the COX pathway, like prostaglandins. Naturally occurring polymorphisms of COX-2 promoters and coding regions might contribute to functional variations and response to different diets. SPONSORSHIP: Norwegian Research Council, National Nutrition Council, Throne Holst Foundation for Nutrition Research, Freia Chokoladefabriks Medisinske Fond and the Norwegian Cancer Society.
PubMed ID
15741988 View in PubMed
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The PRO GREENS intervention in Finnish schoolchildren - the degree of implementation affects both mediators and the intake of fruits and vegetables.

https://arctichealth.org/en/permalink/ahliterature258776
Source
Br J Nutr. 2014 Oct 14;112(7):1185-94
Publication Type
Article
Date
Oct-14-2014
Author
Reetta Lehto
Suvi Määttä
Elviira Lehto
Carola Ray
Saskia Te Velde
Nanna Lien
Inga Thorsdottir
Agneta Yngve
Eva Roos
Source
Br J Nutr. 2014 Oct 14;112(7):1185-94
Date
Oct-14-2014
Language
English
Publication Type
Article
Keywords
Child
Diet
Europe
Faculty
Female
Finland
Food Preferences
Fruit
Health Education - methods
Health Knowledge, Attitudes, Practice
Health Plan Implementation
Health promotion
Humans
Male
School Health Services - statistics & numerical data
Snacks
Students
Vegetables
Abstract
Little is known about the mediating effects of the determinants of fruit and vegetable (FV) intake in school-based interventions that promote FV intake, and few studies have examined the impact of the degree of implementation on the effects of an intervention. The present study examined whether the degree of implementation of an intervention had an effect on children's fruit or vegetable intake and determined possible mediators of this effect. The study is part of the European PRO GREENS intervention study which aimed to develop effective strategies to promote consumption of fruit and vegetables in schoolchildren across Europe. Data from 727 Finnish children aged 11 years were used. The baseline study was conducted in spring 2009 and the follow-up study 12 months later. The intervention was conducted during the school year 2009-2010. The effects were examined using multilevel mediation analyses. A high degree of implementation of the intervention had an effect on children's fruit intake. Knowledge of recommendations for FV intake and liking mediated the association between a high degree of implementation of the intervention and an increase in the frequency of fruit intake. Knowledge of recommendations for FV intake and bringing fruits to school as a snack mediated the association between a low degree of implementation of the intervention and an increase in the frequency of fruit intake. Overall, the model accounted for 34 % of the variance in the change in fruit intake frequency. Knowledge of recommendations acted as a mediator between the degree of implementation of the intervention and the change in vegetable intake frequency. In conclusion, the degree of implementation had an effect on fruit intake, and thus in future intervention studies the actual degree of implementation of interventions should be assessed when considering the effects of interventions.
PubMed ID
25106046 View in PubMed
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Six carotenoids in plasma used to assess recommended intake of fruits and vegetables in a controlled feeding study.

https://arctichealth.org/en/permalink/ahliterature61561
Source
Eur J Clin Nutr. 2004 Aug;58(8):1166-73
Publication Type
Article
Date
Aug-2004
Author
A. Brevik
L F Andersen
A. Karlsen
K U Trygg
R. Blomhoff
C A Drevon
Author Affiliation
School of Medicine, Institute for Nutrition Research, University of Oslo, Oslo, Norway. asgeir.brevik@basalmed.uio.no
Source
Eur J Clin Nutr. 2004 Aug;58(8):1166-73
Date
Aug-2004
Language
English
Publication Type
Article
Keywords
Adult
Antioxidants - metabolism
Biological Markers - blood
Carotenoids - blood
Cross-Over Studies
Female
Food Habits
Fruit
Humans
Lutein - blood
Male
Norway
Research Support, Non-U.S. Gov't
Vegetables
beta Carotene - blood
Abstract
BACKGROUND: There is a need for objective and universally applicable biomarkers for the intake of foods believed to affect human health. OBJECTIVE: The purpose of this feeding study was to test whether plasma concentrations of carotenoids could be used to distinguish recommended consumption of mixed fruits and vegetables (five a day) from the current national intake of fruits and vegetables (two a day). DESIGN: A strict crossover design was chosen to correct for observed interindividual variations in carotenoid response. A total of 40 healthy subjects were included in the study. After 1 week run-in period with no fruits and vegetables in the diet, one group was given two portions (300 g) of fruits and vegetables daily, while another group was given five portions (750 g) for 14 days. Following a 2 week wash-out period and 1 week run-in, the regimens were switched between the groups. Fruits and vegetables were combined to match a typical Norwegian diet. RESULTS: Enhanced intake from two to five portions of mixed fruits and vegetables increased plasma concentrations of alpha-carotene (P=0.033) and lutein (P=0.051) in a crossover analysis. Analysis of data in the parallel part of the study revealed differences between the high and low intake for plasma concentrations of alpha-carotene (P=0.013) and beta-carotene (P=0.016). A trend was also evident for plasma concentrations of lycopene (P=0.057) and lutein (P=0.076) in the parallel analysis. No effect of high vs low intake of fruits and vegetables was observed for plasma concentrations of beta-cryptoxanthin, zeaxanthin, cholesterol and triacylglycerols. CONCLUSION: The study indicates that plasma concentration of alpha-carotene, beta-carotene and lutein may be used to assess changes of fruit and vegetable intake corresponding to an increase from the present national intake in Norway to the recommended amount of five portions of fruits and vegetables daily. SPONSORSHIP: Norwegian Research Council, National Nutrition Council, Throne Holst Foundation for Nutrition Research and Freia Chokoladefabriks Medisinske Fond.
PubMed ID
15054430 View in PubMed
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Validity and reproducibility of self-reported intake of fruit and vegetable among 6th graders.

https://arctichealth.org/en/permalink/ahliterature30361
Source
Eur J Clin Nutr. 2004 May;58(5):771-7
Publication Type
Article
Date
May-2004
Author
L F Andersen
E. Bere
N. Kolbjornsen
K-I Klepp
Author Affiliation
Institute for Nutrition Research, University of Oslo, Norway. l.f.andersen@basalmed.uio.no
Source
Eur J Clin Nutr. 2004 May;58(5):771-7
Date
May-2004
Language
English
Publication Type
Article
Keywords
Child
Diet Records
Diet Surveys
Female
Food Habits
Fruit
Humans
Male
Mental Recall
Norway
Questionnaires - standards
Reproducibility of Results
Research Support, Non-U.S. Gov't
Self Disclosure
Sensitivity and specificity
Vegetables
Abstract
OBJECTIVE: Reproducible and valid methods for measuring fruit and vegetable consumption among young school children are urgently needed. The aim of this study was to test the reproducibility and the validity of a newly developed questionnaire on the intake of fruit and vegetable among Norwegian 6th graders. The questionnaire consisted of a 24-h recall part and a food frequency part. DESIGN: A total of 114 pupils completed the questionnaire two times 14 days apart, and another 85 pupils completed the questionnaire and 7-day food diaries. SUBJECTS: Pupils of 6th grade with a mean age of 11.9 y. RESULTS: Spearman correlation coefficients between the frequency part of the questionnaire administered two times varied from 0.62 for fruit to 0.83 for potato, and no difference was seen between the average intakes from the two 24-h recalls. The 24-h recall part of the questionnaire gave higher estimates for the average intake of fruit and juice compared to the 7-day record, while no difference was observed for vegetable intake. Spearman correlation coefficients between the frequency part and the records varied from 0.21 for fruit and potato to 0.32 for the total intake of fruit and vegetable. CONCLUSION: Both the 24-h recall and the frequency part gave a consistent response on separate occasions over the test-retest study period. The 6th graders were capable of recording yesterday's intake of vegetable, but overestimated the intake of fruit and juice. The ability to rank subjects based on the frequency part was rather low.
PubMed ID
15116080 View in PubMed
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Who eats 5 a day?: intake of fruits and vegetables among Norwegians in relation to gender and lifestyle.

https://arctichealth.org/en/permalink/ahliterature52647
Source
J Am Diet Assoc. 1998 Jun;98(6):689-91
Publication Type
Article
Date
Jun-1998
Author
L. Johansson
L F Andersen
Author Affiliation
Institute for Nutrition Research in Oslo, Norway.
Source
J Am Diet Assoc. 1998 Jun;98(6):689-91
Date
Jun-1998
Language
English
Publication Type
Article
Keywords
Adolescent
Adult
Age Factors
Aged
Educational Status
Female
Food Habits
Fruit
Health Behavior
Humans
Life Style
Male
Middle Aged
Norway
Sex Factors
Socioeconomic Factors
Vegetables
PubMed ID
9627628 View in PubMed
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9 records – page 1 of 1.