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Dive into the research topics where Zuzanna Pieniak is active.

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Featured researches published by Zuzanna Pieniak.


Public Health Nutrition | 2005

Consumer perception versus scientific evidence about health benefits and safety risks from fish consumption.

Wim Verbeke; Isabelle Sioen; Zuzanna Pieniak; John Van Camp; Stefaan De Henauw

OBJECTIVE To investigate the gap between consumer perception and scientific evidence related to health benefits and safety risks from fish consumption. DESIGN Consumer perceptions from a cross-sectional survey in March 2003 in Belgium were compared with scientific evidence based on a literature review. METHOD A quota sampling procedure was used with age as quota control variable. Subjects completed a self-administered questionnaire including health benefit beliefs from fish, fish content and effect beliefs for nutrients and harmful substances. SUBJECTS Adults (n=429), who were the main person responsible for food purchasing in the household (284 women; 145 men), aged 18-83 years, from different regional, education, family size and income groups. RESULTS Fish is predominantly perceived as a healthy food that reduces risk for coronary heart disease, which corroborates scientific evidence. This perception is stronger among women than among men. In contrast with scientific evidence, 46% of the consumers believe that fish contains dietary fibre, whereas less than one-third is aware that fish contains omega-3 fatty acids and that this nutrient has a positive impact on human health. The gap between perception and evidence is larger among consumers with lower education. In general, consumers are better aware of the content and effect of harmful substances than of nutrients in fish. CONCLUSIONS Despite conclusive evidence about the content and positive effect of omega-3 fatty acids in fish, related consumer awareness and beliefs are poor and often wrong. This study exemplifies the need for nutrition education and more effective communication about the health benefits of fish consumption.


Appetite | 2009

Association between traditional food consumption and motives for food choice in six European countries.

Zuzanna Pieniak; Wim Verbeke; Filiep Vanhonacker; Luis Guerrero; Margrethe Hersleth

This study investigates the association between traditional food consumption and motives for food choice in six European countries. Cross-sectional data were collected through the TRUEFOOD pan-European consumer survey (n = 4828) with samples representative for age, gender and region in Belgium, France, Italy, Norway, Poland and Spain. Importance attached to familiarity with a product is found to be strongly and positively associated with general attitude toward traditional food as well as traditional food consumption. The importance attached to convenience was negatively related to both general attitude toward traditional food and traditional food consumption, while the importance of weight control negatively influenced the general attitude. Natural content of food was positively associated with the attitude toward traditional food and traditional food consumption. The importance of price when purchasing food failed to be significantly related with general attitude and traditional food consumption both for the pooled sample as well as within each country except in Spain. The proposed model contributes to a better understanding of factors shaping the image and influencing the consumption of traditional foods in Europe. General attitude toward traditional foods, familiarity, and importance of food naturalness emerged as drivers for traditional food consumption. Importance attached to convenience and health acted as direct barriers to traditional food consumption, whereas importance of weight control emerged as an indirect barrier through lowering general attitude toward traditional foods.


Appetite | 2011

Food choice questionnaire revisited in four countries. Does it still measure the same

Renata Januszewska; Zuzanna Pieniak; Wim Verbeke

This study focuses on the implementation of the food choice questionnaire (FCQ) across four countries. The first objective is to examine the degree to which the factor structure of the FCQ is invariant across different populations. The second objective is to analyse the motives for food choice in different countries. The cross-sectional sample of 1420 consumers consisted of Belgians (N=458), Hungarians (N=401), Romanians (N=229) and Filipinos (N=332). Data analyses included estimation of five multi-group confirmatory factor analysis models; calculation of mean importance ratings for each food choice factor across countries; ANOVA and Tukey post hoc tests; and a rank order test of most to least important factors within each country. The results confirm that the factorial structure of the FCQ is invariant with respect to factor configuration, factor loadings and item intercept. Sensory appeal is the most important factor among all European consumers, while health, convenience and price were all among the five most important factors shaping food choice in Belgium, Hungary and Romania. For Filipinos, the most important were health, price and mood. Sensory appeal ranked on the fourth place.


BMC Public Health | 2008

Fish Consumption and its Motives in Households with Versus Without Self-Reported Medical History of CVD: A Consumer Survey from Five European Countries

Zuzanna Pieniak; Wim Verbeke; Federico J.A. Perez-Cueto; Karen Brunsø; Stefaan De Henauw

BackgroundThe purpose of this study was to explore the cross-cultural differences in the frequency of fish intake and in motivations for fish consumption between people from households with (CVD+) or without (CVD-) medical history of cardiovascular disease, using data obtained in five European countries.MethodsA cross-sectional consumer survey was carried out in November-December 2004 with representative household samples from Belgium, the Netherlands, Denmark, Poland and Spain. The sample consisted of 4,786 respondents, aged 18–84 and who were responsible for food purchasing and cooking in the household.ResultsIndividuals from households in the CVD+ group consumed fish more frequently in Belgium and in Denmark as compared to those in the CVD- group. The consumption of fatty fish, which is the main sources of omega-3 PUFA associated with prevention of cardiovascular diseases, was on the same level for the two CVD groups in the majority of the countries, except in Belgium where CVD+ subjects reported to eat fatty fish significantly more frequently than CVD- subjects. All respondents perceived fish as a very healthy and nutritious food product. Only Danish consumers reported a higher subjective and objective knowledge related to nutrition issues about fish. In the other countries, objective knowledge about fish was on a low level, similar for CVD+ as for CVD- subjects, despite a higher claimed use of medical information sources about fish among CVD+ subjects.ConclusionAlthough a number of differences between CVD- and CVD+ subjects with respect to their frequency of fish intake are uncovered, the findings suggest that fish consumption traditions and habits – rather than a medical history of CVD – account for large differences between the countries, particularly in fatty fish consumption. This study exemplifies the need for nutrition education and more effective communication about fish, not only to the people facing chronic diseases, but also to the broader public. European consumers are convinced that eating fish is healthy, but particular emphasis should be made on communicating benefits especially from fatty fish consumption.


Journal of Dairy Science | 2013

Consumer attitudes, knowledge, and consumption of organic yogurt

Ellen J. Van Loo; My Nguyen Hoang Diem; Zuzanna Pieniak; Wim Verbeke

The segment of organic products occupies an increasingly important place in dairy assortments. The European Union (EU) introduced a new EU organic logo in 2010 with the aim of harmonizing its organic sector and boosting consumer trust in organic food. This study focuses on organic yogurt and investigates consumer awareness and knowledge of the new EU logo. Consumers evaluate organic yogurt as superior compared with conventional yogurt on healthiness, environmental friendliness, quality, and safety. More frequent buyers of organic yogurt have a stronger belief that organic yogurt is superior. The willingness-to-pay for organic yogurt ranged from a premium of 15% for nonbuyers to 40% for habitual buyers, indicating the market potential for this product. A structural equations model reveals the positive association between knowledge, attitudes, and the frequency of purchasing and consuming organic yogurt. Nevertheless, consumer awareness of the EU organic logo remains rather low, which suggests a need for more effective information campaigns and marketing actions.


International Journal of Behavioral Nutrition and Physical Activity | 2012

Explaining the effects of a point-of-purchase nutrition-information intervention in university canteens: a structural equation modelling analysis

Christine Hoefkens; Zuzanna Pieniak; John Van Camp; Wim Verbeke

BackgroundThe importance of canteen meals in the diet of many university students makes the provision of simple point-of-purchase (POP) nutrition information in university canteens a potentially effective way to promote healthier diets in an important group of young adults. However, modifications to environments such as the posting of POP nutrition information in canteens may not cause an immediate change in meal choices and nutrient intakes. The present study aimed at understanding the process by which the POP nutrition information achieved its effects on the meal choice and energy intake, and whether the information was more effective in changing the meal choice of subgroups of university canteen customers.MethodsThe POP nutrition-information intervention used a one-group pretest-posttest design. A sample of 224 customers of two university canteens completed the baseline and 6-months follow-up surveys. A multi-group structural equation modelling analysis was used to test mediation effects of individual difference variables (liking, understanding and use of the information, subjective knowledge and attitude) on the energy intake from canteen meals, moderated by the objective nutrition knowledge and motivation to change diet.ResultsSignificant relations were identified between liking of the information and its use on one hand and a positive effect in attitude towards healthy canteen meals on the other hand. Motivation to change diet and sufficient objective nutrition knowledge were required to maintain a recommended energy intake from canteen meals or to lead to a decrease in energy intake. Participants with greater objective nutrition knowledge had a greater understanding of the POP nutrition information which also resulted in a more effective use of the information.ConclusionsThe results suggest that nutrition-information interventions may be more effective when using nutrition information that is generally liked by the target population in combination with an educational intervention to increase objective nutrition knowledge.Trial registrationNCT01249508


Bio-based and Applied Economics Journal | 2012

Consumers' awareness and attitudinal determinants of European Union quality label use on traditional foods.

Wim Verbeke; Zuzanna Pieniak; Luis Guerrero; Margrethe Hersleth

This study analyses European consumers’ awareness and determinants of use of PDO, PGI and TSG labels in six European countries (Italy, Spain, France, Belgium, Norway and Poland) using data from a cross-sectional survey with 4,828 participants. The study confirms a higher awareness of PDO (68.1%) as compared to PGI (36.4%) and TSG (25.2%). Awareness is higher among men and people aged above 50 years. Consumers’ use of a PDO, PGI or TSG label is triggered by the belief that the label signals better product quality. Quality beliefs are shaped by an interest in getting information about product quality through the quality label. Interest in the origin of foods is a stronger direct and indirect driver of label use than interest in support for the local economy, but both motivations are not directly related to TSG-label use. Differences in the role of determinants are small between the three labelling schemes and between countries with versus without a strong tradition of quality labels in their agricultural and food quality policies. Apart from building general awareness and favourable quality perceptions of the quality schemes and their respective labels, efforts to stimulate consumers’ interest in origin and getting information about product quality through EU quality labels are recommended.


Aquaculture International | 2013

European consumer image of farmed fish, wild fish, seabass and seabream

Filiep Vanhonacker; Zuzanna Pieniak; Wim Verbeke

Increasing fish demand has made aquaculture a necessary complement of fisheries. Consumer acceptance is crucial for market success of aquaculture produce. The present study has investigated the image European consumers have in relation to farmed fish, wild fish, fish as a generic food category and seabass and seabream as the two main cultured species in the European Union (EU). The study aimed to improve current knowledge and bridge geographical gaps with respect to image studies in Europe. In a first exploratory phase, topic-related information was gathered through direct contacts with main stakeholders in different EU countries and through an electronic literature research. In a second phase quantitative descriptive data were collected through cross-sectional consumer surveys in eight EU countries. These were selected to cover the knowledge gaps identified in the exploratory phase, and to cover the different European geographical areas. The country selection was expanded to include the main producer of seabass and seabream, the main importer and some possible target markets. Total sample size was 3,213 respondents. Samples were representative of age and region. European consumers have a very positive image of fish products, especially with respect to its health benefits. Fish origin appeared to be of limited importance; however, wild fish were preferred when compared with farmed fish. Seabass and seabream received positive image scores. Combined with the positive health image of the Mediterranean diet, this could offer marketing opportunities for these fish species.


Nutricion Hospitalaria | 2011

Attitudinal determinants of fish consumption in Spain and Poland

Federico J.A. Perez-Cueto; Zuzanna Pieniak; Wim Verbeke

OBJECTIVE To identify attitudinal determinants of fish consumption in Spain and Poland, and to discuss the potential impact of local healthy eating policies in the observed reported frequency of fish consumption. DESIGN Repeated survey analysis , multivariate linear regression analysis. Data collected through a questionnaire that included socio-demographics, self-reported anthropometrics, as well as validated items of attitudinal and involvement scales, validated items of knowledge about fish, and behaviours (reported fish consumption). SETTING Consumer survey in Poland and Spain, 1800 respondents in 2004 and 1815 respondents in 2008. RESULTS In Poland, intentions to consume more fish and reported fish consumption increased in the four years period between both surveys, together with objective knowledge regarding fish. In Spain with the exception of subjective knowledge, fish consumption at home and total fish consumption, all attitudinal and involvement scale changes were statistically significant. Multivariate regression revealed that age had a small but significant positive effect in all scales, except for satisfaction with life, fish consumption out of home and subjective health. Satisfaction with life and subjective knowledge were significantly determined by household size. The differences between countries were statistically significant for involvement with health and fish, for intention to eat fish, the general attitudes and objective knowledge regarding fish. CONCLUSIONS In Poland, a more positive attitude towards fish, and increased levels of knowledge about this product were observed and could partially be attributed to national policy efforts. In Spain, an interesting feature was observed: more people reported choosing fish when eating out in 2008 compared with respondents in 2004. Such a trend suggests that people slowly move towards healthier choices even in the out of home eating.


PLOS ONE | 2016

Individual and Environmental Factors Influencing Adolescents’ Dietary Behavior in Low- and Middle-Income Settings

Roosmarijn Verstraeten; Jef L. Leroy; Zuzanna Pieniak; Angélica Ochoa-Avilés; Michelle Holdsworth; Wim Verbeke; Lea Maes; Patrick Kolsteren

Objective Given the public health importance of improving dietary behavior in chronic disease prevention in low- and middle-income countries it is crucial to understand the factors influencing dietary behavior in these settings. This study tested the validity of a conceptual framework linking individual and environmental factors to dietary behavior among Ecuadorian adolescents aged 10–16 years. Methods A cross-sectional survey was conducted in 784 school-going Ecuadorian adolescents in urban and rural Southern Ecuador. Participants provided data on socio-economic status, anthropometry, dietary behavior and its determining factors. The relationships between individual (perceived benefits and barriers, self-efficacy, habit strength, and a better understanding of healthy food) and environmental factors (physical environment: accessibility to healthy food; social environment: parental permissiveness and school support), and their association with key components of dietary behavior (fruit and vegetables, sugary drinks, breakfast, and unhealthy snack intake) were assessed using structural equation modeling. Results The conceptual model performed well for each component of eating behavior, indicating acceptable goodness-of-fit for both the measurement and structural models. Models for vegetable intake and unhealthy snacking showed significant and direct effects of individual factors (perceived benefits). For breakfast and sugary drink consumption, there was a direct and positive association with socio-environmental factors (school support and parental permissiveness). Access to healthy food was associated indirectly with all eating behaviors (except for sugary drink intake) and this effect operated through socio-environmental (parental permissiveness and school support) and individual factors (perceived benefits). Conclusion Our study demonstrated that key components of adolescents’ dietary behaviors are influenced by a complex interplay of individual and environmental factors. The findings indicate that the influence of these factors varied by type of dietary behavior.

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Pieter Rutsaert

International Rice Research Institute

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Áine McConnon

University College Dublin

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Áine Regan

University College Dublin

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Patrick G. Wall

University College Dublin

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