Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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    Chrono-nutrition and diet quality in adolescents with delayed sleep-wake phase disorder
    Berendsen, Maxime ; Boss, Myrthe ; Smits, Marcel ; Pot, Gerda K. - \ 2020
    Nutrients 12 (2020)2. - ISSN 2072-6643
    Adolescents - Chrono-nutrition - Circadian rhythms - Delayed sleep-wake phase disorder - Diet quality - Meal timing

    Background: Delayed sleep-wake phase disorder (DSPD), characterized by delayed sleep-onset and problems with awakening in the morning, is mostly prevalent in adolescents. Several studies have suggested chrono-nutrition could present a possible modifiable risk factor for DSPD. Objective: To describe differences in chrono-nutrition and diet quality in adolescents with DSPD compared to age-related controls. Methods: Chrono-nutrition and diet quality of 46 adolescents with DSPD, aged 13–20 years, and 43 controls were assessed via questionnaires. Diet quality included the Dutch Healthy Diet index (DHD-index) and Eating Choices Index (ECI). Results were analysed using logistic regression and Spearman’s partial correlation. Results: Compared with controls, DSPD patients consumed their first food of the day significantly later on weekdays (+32 ± 12 min, p = 0.010) and weekends (+25 ± 8 min, p = 0.005). They consumed their dinner more regularly (80.4% vs. 48.8%, p = 0.002) and consumed morning-snacks less frequently (3.0 ± 2.1 days vs. 4.2 ± 1.7 days, p = 0.006). No differences in clock times of breakfast, lunch, or dinner were found. Moreover, no significant differences in overall diet quality were observed. Conclusion: This descriptive study showed chrono-nutritional differences between adolescents with and without DPSD. Further studies are needed to explore features of chrono-nutrition as a possible treatment of DPSD.

    Moving towards a healthier assortment in secondary and vocational school food environments: Perspectives of Dutch students and school food policy professionals
    Kleef, Ellen van; Meeuwsen, Tanja ; Rigterink, Jetteke ; Trijp, Hans Van - \ 2019
    British Food Journal 121 (2019)9. - ISSN 0007-070X - p. 2052 - 2066.
    Adolescents - Consumer Attitudes - Government policy - Healthy food environment - Intervention acceptability - School canteen

    Purpose: In many countries, schools move toward healthier canteen assortments by limiting the supply of unhealthy foods. The question arises whether this gives any undesirable side effects with students (e.g. compensation in purchases from school to outside retailers, reactance) and how to handle these so that operating school canteens remains financially viable. The purpose of this paper is to identify perspectives toward healthy school food assortments held by vocational education students and professionals within secondary and vocational schools with responsibility for school food policy (e.g. school canteen workers, teachers, school directors) in the Netherlands. Design/methodology/approach: Four focus groups were conducted with students at a vocational school (n=25 in total). A semi-structured interview guide was used to conduct discussions. The interview guide also included three school canteen scenario’s (A: 100 percent healthy food, B: 50 percent healthy/50 percent unhealthy foods and C: 100 percent unhealthy food) and a set of nine intervention strategies. A brief survey included questions on the same three scenario’s and nine intervention strategies. A web-based survey was conducted among 68 professionals responsible for school food policy and included their evaluation of the same canteen scenarios and interventions. Survey data were analyzed using descriptive statistics and content analysis. Content analysis was done on the qualitative data. Findings: School food professionals were highly supportive of Scenario A (100 percent healthy food), as this formed a better fit with their policies and was believed to stronger encourage healthy eating. They did worry about financial feasibility given lower affordability and student reluctance to accept the assortment. Students were less in favor of Scenario A. Students discussed getting value for money and remaining freedom to make unhealthy choices. The authors discuss implications for policy makers who aim to implement measures to improve young people’s eating habits. Originality/value: This study contributes to the literature on creating healthier school food environments. This study uniquely examines a healthier school canteen from a viability perspective, including the views of students as primary customers. Given the need to progressively increase the number of foods complying to dietary guidelines in canteen assortments, this study provides insights into how and why assortment changes best can be implemented.

    Which game narratives do adolescents of different gameplay and sociodemographic backgrounds prefer? A mixed-methods analysis
    Schwarz, Ayla ; Mertens, Lieze ; Simons, Monique ; Spook, Jorinde E. ; Thompson, Debbe ; Cardon, Greet ; Bourdeaudhuij, Ilse De; Chastin, Sebastien F.M. ; Desmet, Ann - \ 2019
    Games for Health Journal 8 (2019)3. - ISSN 2161-783X - p. 195 - 204.
    Adolescents - Digital games - Health promotion - Mixed method - Narratives - Serious games

    Objective: The aim of this study was to investigate which narrative elements of digital game narratives are preferred by the general adolescent population, and to examine associations with gender, socioeconomic status (SES), and gameplay frequency. Further, the study aims to discuss how results can be translated to serious digital games. Materials and Methods: Adolescents were recruited through school to complete a survey on narrative preferences in digital games. The survey included questions on sociodemographic information, frequency of gameplay, and an open-ended question on what could be an appealing narrative for them. Data were analyzed in a mixed-methods approach, using thematic analysis and chi-square analyses to determine narrative preferences and the associations between game narrative elements and player characteristics (gender, SES, and frequency of gameplay). Results: The sample consisted of 446 adolescents (12-15 years old) who described 30 narrative subthemes. Preferences included human characters as protagonists; nonhuman characters only as antagonists; realistic settings, such as public places or cities; and a strong conflict surrounding crime, catastrophe, or war. Girls more often than boys defined characters by their age, included avatars, located the narrative in private places, developed profession-related skills, and included a positive atmosphere. Adolescents of nonacademic education more often than adolescents of academic education defined characters by criminal actions. Infrequent players more often included human characters defined by their age than frequent players. After performing a Bonferroni correction, narrative preferences for several gender differences remained. Conclusion: Different narrative elements related to subgroups of adolescents by gender, SES, and frequency of gameplay. Customization of narratives in serious digital health games should be warranted for boys and girls; yet, further research is needed to specify how to address girls in particular.

    Nurturing Children's Healthy Eating : Position statement
    Haines, Jess ; Haycraft, Emma ; Lytle, Leslie ; Nicklaus, Sophie ; Kok, Frans J. ; Merdji, Mohamed ; Fisberg, Mauro ; Moreno, Luis A. ; Goulet, Olivier ; Hughes, Sheryl O. - \ 2019
    Appetite 137 (2019). - ISSN 0195-6663 - p. 124 - 133.
    Adolescents - Children - Eating habits - Feeding practices - Feeding style - Pleasure of eating

    The relationship between eating a healthy diet and positive health outcomes is well known; nurturing healthy eating among children therefore has the potential to improve public health. A healthy diet occurs when one's usual eating patterns include adequate nutrient intake and sufficient, but not excessive, energy intake to meet the energy needs of the individual. However, many parents struggle to establish healthy eating patterns in their children due to the pressures of modern life. Moreover, healthcare providers often do not have the time or the guidance they need to empower parents to establish healthy eating practices in their children. Based on existing evidence from epidemiologic and intervention research, the Nurturing Children's Healthy Eating collaboration, established by Danone Institute International, has identified four key themes that encourage and support healthy eating practices among children in the modern Western world. The first — positive parental feeding — explores how parenting practices and styles, such as avoiding food restriction, allowing children to make their own food choices, and encouraging children to self-limit their portion sizes, can influence children's dietary intake. The second — eating together — highlights the link between eating socialization through regular family meals and healthful diet among children. The third — a healthy home food environment — explores the impact on eating practices of family resources, food availability/accessibility, parental modeling, and cues for eating. The fourth — the pleasure of eating — associates children's healthy eating with pleasure through repeated exposure to healthful foods, enjoyable social meals, and enhancement of the cognitive qualities (e.g. thoughts or ideas) of healthful foods. This paper reviews the evidence leading to the characterization of these nurturing themes, and ways in which recommendations might be implemented in the home.

    Effect of a school-based oral health education in preventing untreated dental caries and increasing knowledge, attitude, and practices among adolescents in Bangladesh
    Haque, Syed Emdadul ; Rahman, Mosiur ; Itsuko, Kawashima ; Mutahara, Muhmuda ; Kayako, Sakisaka ; Tsutsumi, Atsuro ; Islam, Md Jahirul ; Mostofa, Md Golam - \ 2016
    BMC Oral Health 16 (2016)1. - ISSN 1472-6831
    Adolescents - Bangladesh - Dental caries - School-based health education

    Background: There is a dearth of published literature that demonstrates the impact and effectiveness of school-based oral health education (OHE) program in Bangladesh and it is one of the most neglected activities in the field of public health. Keeping this in mind, the objectives of this study were to assess the effectiveness of OHE program in: 1) increasing oral health knowledge, attitude, and practices and 2) decreasing the prevalence of untreated dental caries among 6-8 grade school students in Bangladesh. Methods: This intervention study was conducted in Araihazar Thana, Narayanganj district, Bangladesh during April 2012 to March 2013. The total participants were 944 students from three local schools. At baseline, students were assessed for oral health knowledge, attitude and practices using a self-administered structured questionnaire and untreated dental caries was assessed using clinical examination. Follow up study was done after 6 months from baseline. McNemar's chi-square analysis was used to evaluate the impact of OHE program on four recurrent themes of oral health between the baseline and follow-up. Multiple logistic regression analyses were used to determine the impact of the intervention group on our outcome variables. Results: Significant improvement was observed regarding school aged adolescents' self-reported higher knowledge, attitude and practices scores (p <0.001) at follow-up compared with baseline. The prevalence of untreated dental caries of the study population after the OHE program was significantly (p <0.01) reduced to 42.5 %. Multiple logistic regression analyses showed that the OHE intervention remained a significant predictor in reducing the risk of untreated dental caries (adjusted odds ratio [AOR] =0.51; 95 % confidence interval [CI] = 0.37, 0.81). In the follow-up period participants were 2.21 times (95 % CI = 1.87, 3.45) more likely to have higher level of knowledge regarding oral health compared to baseline. Compared with baseline participants in the follow-up were 1.89 times (95 % CI = 1.44-2.87) more likely to have higher attitude towards oral health. In addition, OHE intervention was found to be significantly associated with higher level of practices toward oral health (AOR = 1.64; 95 % CI = 1.12, 3.38). Conclusions: This study indicated that OHE intervention was effective in increasing i) knowledge, ii) attitude, and iii) practices towards oral health; it also significantly reduced the prevalence of untreated dental caries among school aged adolescents from grade 6-8 in a deprived rural area of Bangladesh.

    Hungry for an intervention? Adolescents' ratings of acceptability of eating-related intervention strategies
    Stok, F.M. ; Ridder, D.T.D. de; Vet, Emely de; Nureeva, Liliya ; Luszczynska, Aleksandra ; Wardle, Jane ; Gaspar, Tania ; Wit, J.B.F. de - \ 2016
    BMC Public Health 16 (2016). - ISSN 1471-2458 - 8 p.
    Adolescents - Eating behavior - Interventions - Overweight - Prevention - Public policy

    Background: Effective interventions promoting healthier eating behavior among adolescents are urgently needed. One factor that has been shown to impact effectiveness is whether the target population accepts the intervention. While previous research has assessed adults' acceptance of eating-related interventions, research on the opinion of adolescents is lacking. The current study addressed this gap in the literature. Methods: Two thousand seven hundred sixty four adolescents (aged 10-17 years) from four European countries answered questions about individual characteristics (socio-demographics, anthropometrics, and average daily intake of healthy and unhealthy foods) and the acceptability of ten eating-related intervention strategies. These strategies varied in type (either promoting healthy eating or discouraging unhealthy eating), level of intrusiveness, setting (home, school, broader out-of-home environment), and change agent (parents, teacher, policy makers). Results: Based on adolescents' acceptability ratings, strategies could be clustered into two categories, those promoting healthy eating and those discouraging unhealthy eating, with acceptability rated significantly higher for the former. Acceptability of intervention strategies was rated moderate on average, but higher among girls, younger, overweight and immigrant adolescents, and those reporting healthier eating. Polish and Portuguese adolescents were overall more accepting of strategies than UK and Dutch adolescents. Conclusions: Adolescents preferred intervention strategies that promote healthy eating over strategies that discourage unhealthy eating. Level of intrusiveness affected acceptability ratings for the latter type of strategies only. Various individual and behavioral characteristics were associated with acceptability. These findings provide practical guidance for the selection of acceptable intervention strategies to improve adolescents' eating behavior.

    " I should remember I don't want to become fat" : Adolescents' views on self-regulatory strategies for healthy eating
    Stok, F.M. ; Vet, Emely de; Ridder, Denise T.D. de; Wit, John B.F. de - \ 2012
    Journal of Youth and Adolescence 35 (2012)1. - ISSN 0140-1971 - p. 67 - 75.
    Adolescents - Eating behavior - Obesity epidemic - Self-regulation - Self-regulatory strategies

    Few studies have investigated the strategies adolescents identify to self-regulate eating behavior. Aiming to address this gap in the literature, the current article describes a bottom-up investigation of strategies adolescents identify for the successful self-regulation of eating behavior. Sixty-two adolescents generated statements about self-regulation strategies for eating and rated the utility of each statement. From an initial pool of 357 statements, thirteen overarching self-regulatory strategies were distilled (e.g. preparation; stimulus control). Significant differences were found between the strategies with regard to perceived utility. Findings indicate that, in apparent contradiction to growing obesity rates, adolescents have knowledge of various self-regulatory strategies. Possible explanations for this contradiction are discussed.

    The effects of practicing registration of organ donation preference on self-efficacy and registration intention : An enactive mastery experience
    Reubsaet, Astrid ; Brug, Johannes ; Vet, Emely De; Borne, Bart Van Den - \ 2003
    Psychology and Health 18 (2003)5. - ISSN 0887-0446 - p. 585 - 594.
    Adolescents - Intention - Organ donation - Registration - Self-efficacy

    To evaluate an intervention to increase self-efficacy intentions to register organ donation preference, a Randomized Controlled Trial was conducted among 242 Dutch high-school students aged 15 to 18 years. On the basis of Social Cognitive Theory, practicing with a standard registration form (according to the Dutch system) was expected to increase the intention to register an organ donation preference through increasing self-efficacy. The participants in the experimental group practiced how to complete a registration form while the control group did not receive an intervention. Students in both groups completed a self-administered questionnaire before and after the intervention took place. The results showed that self-efficacy and intentions to register organ donation preferences at post-test were significantly higher in the intervention group.

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