17 research outputs found
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Application of behavior change techniques in a personalized nutrition Electronic Health intervention study: protocol for the web-based Food4Me randomized controlled trial
Background:
In order to determine the efficacy of behavior change techniques (BCT) applied in dietary and physical activity intervention studies, it is first necessary to record and describe techniques which have been used during such interventions. Published frameworks used in dietary and smoking cessation interventions undergo continuous development and most are not adapted for online delivery. The Food4Me study (N=1607) provided the opportunity to use existing frameworks to describe standardized online techniques employed in a large-scale internet-based intervention to change dietary behaviour and physical activity.
Objectives:
To describe techniques embedded in the Food4Me study design and explain the selection rationale. To demonstrate the use of behaviour change technique taxonomies, develop standard operating procedures for training, and identify strengths and limitations of the Food4Me framework that will inform its use in future studies.
Methods:
The 6-month randomized controlled trial took place simultaneously in 7 European countries, with participants receiving one of 4 levels of personalized advice (generalized, intake-based, intake+phenotype-based and intake+phenotype+gene-based). A 3-phase approach was taken: (I), existing taxonomies were reviewed and techniques were identified a priori for possible inclusion in the Food4Me study; (II) a standard operating procedure was developed to maintain consistency in the use of methods and techniques across research centers; (III) the Food4Me BCT framework was reviewed and updated post intervention. An analysis of excluded techniques was also conducted.
Results:
Of 46 techniques identified a priori as being applicable to Food4Me, 17 were embedded in the intervention design. Eleven were from a dietary taxonomy and 6 from a smoking cessation taxonomy. In addition, the 4-category smoking cessation framework structure was adopted for clarity of communication. Smoking cessation texts were adapted for dietary use where necessary. A posteriori, a further 9 techniques were included. Examination of excluded items highlighted the distinction between techniques considered appropriate for face-to-face vs internet-based delivery.
Conclusions:
The use of existing taxonomies facilitated the description and standardization of techniques used in Food4Me. We recommend that for complex studies of this nature, technique analysis should be conducted a priori to develop standardized procedures and training, and reviewed a posteriori to audit the techniques actually adopted. The present framework description makes a valuable contribution to future systematic reviews and meta-analyses which explore technique efficacy and underlying psychological constructs. This was a novel application of the behavior change taxonomies, and was the first internet-based personalized nutrition intervention to use such a framework remotely
Food choice motives, attitudes toward and intention to adopt personalised nutrition
yesObjective: This study explored associations between food choice motives, attitudes towards,
5 and intention to adopt personalised nutrition in order to inform communication strategies
6 based on consumer priorities and concerns. Design and Setting: A survey was administered
7 online which included the food choice questionnaire (FCQ), and items assessing attitudes
8 towards and intention to adopt personalised nutrition. Participants: Nationally representative
9 samples were recruited in 9 EU countries (N=9381). Results: Structural equation modelling
10 indicated that the food choice motives, weight control, mood, health and ethical concern had
11 a positive association and price had a negative association with attitude towards, and
12 intention to adopt, personalised nutrition. Health was positively associated and familiarity
13 negatively associated with attitude toward personalised nutrition. The effects of weight
14 control, ethical concern, mood and price on intention to adopt personalised nutrition were
15 partially mediated by the attitude. The effects of health and familiarity were fully mediated
16 by attitude. Sensory appeal was negatively and directly associated with intention to adopt
17 personalised nutrition. Conclusion: Personalised nutrition providers may benefit from taking
18 into consideration the importance of underlying determinants of food choice, particularly
19 weight control, mood and price, in potential users when promoting services and in tailoring
20 communications that are motivationally relevant.Post peer-review accepted manuscript; changes are in red
Providing personalised nutrition: Consumers’ trust and preferences regarding sources of information, service providers and regulators, and communication channels
yesBackground/Aims: Personalised nutrition has potential to revolutionise dietary health promotion if accepted by the general public. We studied trust and preferences regarding personalised nutrition services, how they influence intention to adopt these services, and cultural and social differences therein.
Methods: A total of 9381 participants were quota sampled to be representative for each of nine EU countries (Germany, Greece, Ireland, Poland, Portugal, Spain, Netherlands, UK, Norway) and surveyed by questionnaire assessing their intention to adopt personalised nutrition, trust in service regulators and information sources, and preferences for service providers and information channels.
Results: Trust and preferences significantly predicted intention to adopt personalised nutrition. Higher trust in the local department of healthcare was associated with lower intention to adopt personalised nutrition. General practitioners were the most trusted of service regulators, except for in Portugal, where consumer organisations and universities were most trusted. In all countries, family doctors were the most trusted information providers. Trust in the National Health Service as service regulator and information source showed high variability across countries. Despite its highest variability across countries, personal meeting was the preferred communication channel except in Spain (where an automated internet service was preferred). General practitioners were the preferred service providers, except in Poland, where dietitians and nutritionists were preferred. The preference for dietitians and nutritionists as service providers highly varied across countries.
Conclusion: These results may assist in informing local initiatives to encourage acceptance and adoption of country specific tailored personalised nutrition services therefore benefiting individual and public health
Psychological Determinants of Consumer Acceptance of Personalised Nutrition in 9 European Countries
YesObjective: To develop a model of the psychological factors which predict people’s intention to adopt personalised
nutrition. Potential determinants of adoption included perceived risk and benefit, perceived self-efficacy, internal locus of
control and health commitment.
Methods: A questionnaire, developed from exploratory study data and the existing theoretical literature, and including
validated psychological scales was administered to N = 9381 participants from 9 European countries (Germany, Greece,
Ireland, Poland, Portugal, Spain, the Netherlands, the UK, and Norway).
Results: Structural equation modelling indicated that the greater participants’ perceived benefits to be associated with
personalised nutrition, the more positive their attitudes were towards personalised nutrition, and the greater their intention
to adopt it. Higher levels of nutrition self-efficacy were related to more positive attitudes towards, and a greater expressed
intention to adopt, personalised nutrition. Other constructs positively impacting attitudes towards personalised nutrition
included more positive perceptions of the efficacy of regulatory control to protect consumers (e.g. in relation to personal
data protection), higher self-reported internal health locus of control, and health commitment. Although higher perceived
risk had a negative relationship with attitude and an inverse relationship with perceived benefit, its effects on attitude and
intention to adopt personalised nutrition was less influential than perceived benefit. The model was stable across the
different European countries, suggesting that psychological factors determining adoption of personalised nutrition have
generic applicability across different European countries.
Conclusion: The results suggest that transparent provision of information about potential benefits, and protection of
consumers’ personal data is important for adoption, delivery of public health benefits, and commercialisation of
personalised nutrition.This project has received funding from the European Union’s Seventh Framework Programme for research, technological development and demonstration under grant agreement n u 265494 (http://cordis.europa.eu/fp7/home_en.html). Food4Me is the acronym of the project ‘‘Personalised nutrition: an integrated analysis of opportunities and challenges’’ (http://www.food4me.org/). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript
Consumer acceptance of novel foods : a grounded theory study
The aim of this thesis was to develop a conceptual understanding of consumer acceptance of novel foods, grounded in the attitudes, perceptions and behaviours of individuals to foods that were "novel" by virtue of an innovative method of production or newness within the diet. Novel food acceptance is dominated by psycho-sensory research and thus this thesis' behavioural approach provides an alternative perspective that contributes to the food choice and acceptance literature. The grounded theory method (GTM) was selected as the guiding methodology because of its theory building mandate. The GTM procedures were applied to a secondary data set of 45 transcripts drawn from 6 separate research projects. These projects were linked by the common use of the focus group technique to gene rate data together with a complementary subject matter, namely data relating to the attitudes perceptions and experiences of i11dividuals to cOnve11lional foods, novel foods and novel food technologies. The analysis showed novel food acceptance is a cyclical process of acceptance or rejection containing five 'acceptance states', rather than a single decision point. The five acceptance states derived from the analysis 'and related to the consideration, trial and sustained incorporation of a novel food into dietary practices that arc shaped by personal, product and situational factors are: i) conceptual acceptance, or the degree of engagement with and approval of a novel food; ii) connective acceptance, ,or the personal connections that an individual makes with a novel food by visualising its potential benefits and its role in satisfying a perceived personal need; iii) evaluative acceptance, or the trade-offs made when evaluating novel foods with available alternatives; iv) tri al acceptance, or the practices associated with the preparation of the novel food, the taste: of the novel food and its perceived impact on well-being; and v) dietary acceptance, or the complementarity of a novel food with the structure of existing meal patterns and the substitutability of the novel food with existing foods within the diet. An outcome of this behavioural model of consumer acceptance is the incorporation of the novel food into established dietary practices, which is referred to as the "acceptability of dietary change". These findings provide a framework for novel food acceptance research and have implications for food consumer research.EThOS - Electronic Theses Online ServiceGBUnited Kingdo
Willingness to pay for personalised nutrition across Europe
<p>Background: Personalised nutrition (PN) may promote public health. PN involves dietary advice based on individual characteristics of end users and can for example be based on lifestyle, blood and/or DNA profiling. Currently, PN is not refunded by most health insurance or health care plans. Improved public health is contingent on individual consumers being willing to pay for the service. Methods: A survey with a representative sample from the general population was conducted in eight European countries (N = 8233). Participants reported their willingness to pay (WTP) for PN based on lifestyle information, lifestyle and blood information, and lifestyle and DNA information. WTP was elicited by contingent valuation with the price of a standard, non-PN advice used as reference. Results: About 30% of participants reported being willing to pay more for PN than for non-PN advice. They were on average prepared to pay about 150% of the reference price of a standard, non-personalised advice, with some differences related to socio-demographic factors. Conclusion: There is a potential market for PN compared to non-PN advice, particularly among men on higher incomes. These findings raise questions to what extent personalized nutrition can be left to the market or should be incorporated into public health programs.</p
Fit measures for one-factor models.
a<p>Equality of item loadings (and intercepts) relaxed for third item in Spain and Greece. Equality of item intercept relaxed for first item in Poland and for third item in Portugal.</p>b<p>Equality of item intercepts relaxed for second item in Norway and for third item in Spain, Greece, and The Netherlands.</p>c<p>Model includes error covariance between first and second item, equal across countries.</p>d<p>Equality of item intercept relaxed for third item in The Netherlands.</p>e<p>Equality of item loading (and intercept) relaxed for second item in Spain. Equality of item intercept relaxed for first item in Greece, for second item in Norway, Germany, and the Netherlands, and for third item in Germany.</p><p>Fit measures for one-factor models.</p
Model-based internal-consistency reliabilities Model <i>vi.</i>
<p>Model-based internal-consistency reliabilities Model <i>vi.</i></p