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1.
Eat Weight Disord ; 24(2): 209-246, 2019 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-30414078

RESUMEN

AIM: In some cases, detrimental consequences on health are generated by self-imposed dietary rules intended to promote health. The pursuit of an "extreme dietary purity" due to an exaggerated focus on food may lead to a disordered eating behavior called "orthorexia nervosa" (ON). ON raises a growing interest, but at present there is no universally shared definition of ON, the diagnostic criteria are under debate, and the psychometric instruments used in the literature revealed some flaws. This narrative review of the literature aims at assessing state of the art in ON definition, diagnostic criteria and related psychometric instruments and provides research propositions and framework for future analysis. METHODS: The authors collected articles through a search into Pubmed/Medline, Scopus, Embase and Google Scholar (last access on 07 August 2018), using "orthorexia", "orthorexia nervosa" and "obsessive healthy eating" as search terms, and filled three tables including narrative articles (English), clinical trials (English), and articles in languages different from English. The data extrapolated from the revised studies were collected and compared. In particular, for each study, the diagnostic criteria considered, the specific psychometric instrument used, the results and the conclusions of the survey were analyzed. RESULTS: The terms employed by the different authors to define ON were fixation, obsession and concern/preoccupation. Several adjectives emphasized these expressions (e.g. exaggerated/excessive, unhealthy, compulsive, pathological, rigid, extreme, maniacal). The suitable food and the diet were defined in different ways. Most of the papers did not set the diagnostic criteria. In some cases, an attempt to use DSM (edition IV or 5) criteria for anorexia nervosa, or avoidant/restrictive food intake disorder, or body dysmorphic disorder, was done. Specific diagnostic criteria proposed by the authors were used in few studies. All these studies indicated as primary diagnostic criteria: (a) obsessional or pathological preoccupation with healthy nutrition; (b) emotional consequences (e.g. distress, anxieties) of non-adherence to self-imposed nutritional rules; (c) psychosocial impairments in relevant areas of life as well as malnutrition and weight loss. The ORTO-15 and the Orthorexia Self-Test developed by Bratman were the most used psychometric tools. CONCLUSIONS: The present review synopsizes the literature on the definition of ON, proposed diagnostic criteria and psychometric instruments used to assess ON attitudes and behaviors. This work represents a necessary starting point to allow a further progression of the studies on the possible new syndrome and to overcome the criticisms that have affected both research and clinical activity until now. LEVEL OF EVIDENCE: Level V, narrative review.


Asunto(s)
Dieta Saludable , Conducta Alimentaria/psicología , Trastornos de Alimentación y de la Ingestión de Alimentos/diagnóstico , Conducta Obsesiva/diagnóstico , Trastornos de Alimentación y de la Ingestión de Alimentos/psicología , Humanos , Conducta Obsesiva/psicología
2.
Public Health Nutr ; 18(7): 1292-9, 2015 May.
Artículo en Inglés | MEDLINE | ID: mdl-25145972

RESUMEN

OBJECTIVE: Adherence to a Mediterranean diet is associated with significant improvements in health status. However, to date no systematic review and meta-analysis has summarized the effects of Mediterranean diet adherence on the risk of type 2 diabetes mellitus. DESIGN: Electronic searches for randomized controlled trials and cohort studies were performed in MEDLINE, SCOPUS, EMBASE and the Cochrane Trial Register until 2 April 2014. Pooled effects were calculated by an inverse-variance random-effect meta-analysis using the statistical software Review Manager 5.2 by the Cochrane Collaboration. SETTING: Meta-analysis of randomized controlled trials and cohort studies. ELIGIBILITY CRITERIA: 19+years of age. RESULTS: One randomized controlled trial and eight prospective cohort studies (122 810 subjects) published between 2007 and 2014 were included for meta-analysis. For highest v. lowest adherence to the Mediterranean diet score, the pooled risk ratio was 0.81 (95 % CI 0.73, 0.90, P<0.0001, I 2=55 %). Sensitivity analysis including only long-term studies confirmed the results of the primary analysis (pooled risk ratio=0.75; 95 % CI 0.68, 0.83, P<0.00001, I 2=0 %). The Egger regression test provided no evidence of substantial publication bias (P=0.254). CONCLUSIONS: Greater adherence to a Mediterranean diet is associated with a significant reduction in the risk of diabetes (19 %; moderate quality evidence). These results seem to be clinically relevant for public health, in particular for encouraging a Mediterranean-like dietary pattern for primary prevention of type 2 diabetes mellitus.


Asunto(s)
Diabetes Mellitus Tipo 2/prevención & control , Dieta Mediterránea , Medicina Basada en la Evidencia , Política Nutricional , Cooperación del Paciente , Estudios de Cohortes , Diabetes Mellitus Tipo 2/epidemiología , Humanos , Persona de Mediana Edad , Ensayos Clínicos Controlados Aleatorios como Asunto , Riesgo
3.
BMC Public Health ; 15: 910, 2015 Sep 18.
Artículo en Inglés | MEDLINE | ID: mdl-26381731

RESUMEN

BACKGROUND: Research showed that food marketing for children frequently contradicts national dietary guidelines. Children, unlike adults, are not able to understand the persuasiveness of the advertisements with its short- and long-term effects on health, thus the common international tenor is to restrict food marketing. In the European Union, marketing restriction based on self-regulation have been initiated (EU Pledge Nutrition Criteria). The study aims contribute to depict the status quo of television advertisement targeted at children before the pledged initiative came into full effect. METHODS: In this study we analyze the quality and displaying frequency of a set of advertisements targeted at children broadcasted on Austrian television. Promoted food products targeted at children or adults were identified. Category-based analysis of the displayed food was performed based on the Austrian Nutrition guidelines (number of displayed food per food category). The children's food content was analyzed according to the newly established nutritional quality criteria for advertised food in the EU to assess the nutritional quality of the depicted food. RESULTS: In total, 360 h of video material was recorded in February and March 2014. A set of 1919 food advertisements, with 15.1 % targeted at children were broadcasted. Of all food advertisements targeted at children, 92.4 % was for fatty, sweet and salty snacks, while no advertisements for vegetables, legumes or fruits were shown. From all food advertisements for children, 65.9 % originated from participating companies of the EU Pledge Nutrition Criteria. Further analysis revealed that 95.9 % of the advertised food for children showed at least one aspect of nonconformity with the EU Pledge Nutrition Criteria; on the contrary 64.7 % of the displayed food advertisement also featured at least one desirable food component (e.g. high fibre content, high protein content). CONCLUSIONS: The present research suggests that the majority of advertised food for children do not conform with the pledged criteria as defined in the EU Pledge Nutrition Criteria and almost all advertisements would be prohibited. We discuss our findings in the context of public health nutrition and present a perspective for future directions in this important field of research.


Asunto(s)
Dieta , Industria de Alimentos , Mercadotecnía , Política Nutricional , Valor Nutritivo , Televisión , Publicidad , Austria , Niño , Comprensión , Humanos , Comunicación Persuasiva , Bocadillos
4.
Diabetologia ; 57(9): 1789-97, 2014 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-24996616

RESUMEN

AIMS/HYPOTHESIS: This study aimed to systematically review randomised controlled trials comparing the effects of aerobic exercise training (AET), resistance training (RT) and combined training (CT) on glycaemic control and blood lipids in patients with type 2 diabetes mellitus. METHODS: Searches were performed in MEDLINE, EMBASE and the Cochrane Library. Inclusion criteria were: type 2 diabetes mellitus, adult, supervised training and a minimum intervention period of 8 weeks. Pooled effects were calculated by fixed/random effect pairwise and Bayesian fixed/random effects network meta-analyses. RESULTS: A total of 14 trials enrolling 915 participants were included. AET was more effective than RT in improving HbA1c levels (mean difference [MD] -0.20% [-2.2 mmol/mol]; 95% CI -0.32, -0.08; p = 0.0007, 10 trials/515 participants) and fasting glucose (MD -0.9 mmol/l; 95% CI -1.71, -0.09; p = 0.03, 8 trials/245 participants). Compared with AET, CT resulted in a significantly more pronounced reduction in HbA1c (MD -0.17% [-1.87 mmol/mol]; 95% CI -0.31, -0.03; p = 0.02, 9 trials/493 participants). Compared with RT, the MD of the change in HbA1c (MD -0.62%, [-6.82 mmol/mol]; 95% CI -0.95, -0.30; p = 0.0002, 5 trials/362 participants], fasting glucose (MD -1.99 mmol/l; 95% CI -3.07, -0.90; p = 0.0003, 3 trials/99 participants) and triacylglycerols (MD -0.28 mmol/l; 95% CI -0.46, -0.10; p = 0.003, 4 trials/213 participants) were all in favour of CT. The exclusion of trials with a high risk of bias yielded only non-significant results. CONCLUSIONS/INTERPRETATION: The present data suggest that CT might be the most efficacious exercise modality to improve glycaemic control and blood lipids. Interpretation with respect to clinical relevance is limited by the low quality of the studies included and the limited information on the clinically important outcomes or adverse effects of exercise.


Asunto(s)
Glucemia/metabolismo , Diabetes Mellitus Tipo 2/sangre , Ejercicio Físico/fisiología , Lípidos/sangre , Humanos , Entrenamiento de Fuerza
7.
Res Involv Engagem ; 6: 32, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32566249

RESUMEN

PLAIN LANGUAGE SUMMARY: Research should benefit society at large. Involving citizens those who are affected by research may not only increase the quality, but can also push research towards generating greater societal benefits and relevant outcomes for citizens. Including citizens in research also has ethical implications, which necessitate structured guidance on 'how to' meaningfully involve them. In our project, we invited a multi-stakeholder group consisting of researchers from multiple disciplines, citizen scientists, youth and patient advocates to co-create a guide on 'how to' meaningfully involve citizens in research. In five consecutive workshops, we discussed how the characteristics of interactions between researchers and citizens (e.g., building trustful relationships and communication) and what a possible project steering structure enabling meaningful public involvement in research could look like. As a result of these workshops, the PPIE 'How to' Guide for Researchers was developed to support the implementation of 'Patient and Public Involvement and Engagement' (PPIE) activities and informed a PPIE Implementation Programme funding public involvement activities in Austria. ABSTRACT: Involving citizens in research is not widely utilised across research disciplines and countries. It requires the readiness of researchers and their organisations as well as guides on 'how to' successfully involve citizens in a meaningful way. Including the patient and citizen voice in research activities has been most frequently demonstrated in health research, however, is implemented along various degrees of involvement - from passively receiving information about science to actively involving the citizens in steering projects and research activities. In this commentary, we aim to report a multi-stakeholder co-creation process developing 'Patient and Public Involvement and Engagement' (PPIE) activities across disciplines to provide guidance for researchers and the public. We use Ludwig Boltzmann Society's (LBG) organisational framework as a case study, hence it consists of research institutes ranging from the life sciences to humanities and therefore represents a well-suited research environment for this endeavour. In a co-creation approach - to accomplish a shared understanding of public involvement in research among different stakeholders - a multi-stakeholder group comprising 11 researchers from natural sciences, life sciences, social sciences and humanities, and 13 citizens (such as patient advocates, young people and citizen scientists) were involved. In five consecutive workshops, we co-developed the nature of interactions between citizens and researchers, as well as governance structures enabling meaningful involvement in research. The workshops' content was informed by an initial literature review. As a result of this process, the PPIE 'How to' Guide for Researchers was developed to support the implementation of involvement activities in their research projects according to the public involvement principles. These principles informed assessment criteria for the newly established PPIE Implementation Programme at LBG. It provides funding and support for public involvement activities in research to embed a sustainable and meaningful implementation of public involvement activities in Austria.

8.
Prev Med Rep ; 6: 307-313, 2017 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-28435784

RESUMEN

Food marketing for children is a major concern for public health nutrition and many schools make efforts to increase healthy eating. Food environments surrounding schools in urban areas may undermine these efforts for healthy nutrition within school programs. Our study aim is to describe the nutrition environment within walking distance of schools in terms of food quality and food marketing and to explore the degree to which elements of the nutrition environment varies by proximity to schools. In a cross-sectional study, we analyzed the surrounding food environments of a convenience sample of 46 target schools within 950m walking distance in 7 different urban districts across Vienna, Austria. In total, we analyzed data from 67 fast food outlets and 54 supermarkets analyzing a total of 43.129 packaged snack food and beverage products, from which 85% were for adults and 15% of the products were child-oriented. Proximity to the schools did not affect the availability of child-oriented products and dedicated food advertisements for children. After applying nutrient profiling using the Nutrient Profiling Model (NPM) on child-oriented products, results showed that 15.8% of the packaged snack food were categorized as "healthy" foods and 84.2% as "less healthy"; for beverages 65.7% were categorized as "healthy" and 34.3% as "less healthy". In conclusion, our results show that child-oriented snacks are not more frequently advertised around schools but substantially lack in nutritional quality with the potential to undermine efforts for promoting healthy eating practices within schools.

9.
Curr Pharm Des ; 23(7): 1016-1027, 2017.
Artículo en Inglés | MEDLINE | ID: mdl-27748190

RESUMEN

BACKGROUND: Nuts have been an indispensable component of the human diet for hundreds because of their unique nutrient composition and are thought to play a beneficial part in the prevention of cardiovascular diseases. OBJECTIVE: To evaluate the extent, validity and presence of evidence for studies investigating the impact of nuts intake on biomarkers of cardiovascular disease and cardiovascular events, we performed an umbrella review of all published meta-analyses synthesizing data from both observational studies and randomized controlled trials. METHOD: PubMed (between 1966 and April 2016) was searched for systematic reviews and meta-analyses. Methodological quality was assessed by applying the AMSTAR score (0-11 points), and the meta-evidence by applying NutriGrade, our recently developed scoring system (0-10 points). RESULTS: In total, 14 meta-analyses were included in the umbrella review. Only 4 out of 14 reported an AMSTAR score ≥8 (high methodological quality), whereas NutriGrade meta-evidence score varied between 2 (very low meta-evidence) and 7.9 (moderate meta-evidence). There is consistent evidence from intervention trials, reporting significant reductions for total cholesterol, and from observational studies that higher intakes of nuts were associated with reduced risk of cardiovascular disease and hypertension. On the other side no effect could be observed for stroke, HDL-cholesterol, and blood pressure in the normal range. CONCLUSION: In summary, the present umbrella review showed that nuts intake was associated with reduced risk of cardiovascular disease and hypertension, and lower levels of total cholesterol. The observed evidence is limited by the moderate methodological quality and very low to moderate quality of evidence.


Asunto(s)
Enfermedades Cardiovasculares/prevención & control , Ingestión de Alimentos , Hipertensión/prevención & control , Nueces/química , Extractos Vegetales/farmacología , Animales , Humanos , Extractos Vegetales/química , Extractos Vegetales/aislamiento & purificación , Factores de Riesgo
10.
Food Sci Nutr ; 5(4): 889-895, 2017 07.
Artículo en Inglés | MEDLINE | ID: mdl-28748077

RESUMEN

Decreasing alcohol in beer and increasing the pleasure of lower alcohol beers is a potential way to limit total alcohol consumption. Consumers' willingness to drink alcohol-reduced beers is mainly limited by unfavorable flavor characteristics that arise during consumption. To investigate the temporal flavor dominance during consumption, we analyzed the five most dominant beer flavors from nine different beers among three types of beer with varying alcohol content to assess the Flavor Life Cycle. Results show that beers with different alcohol content displayed similar flavor dominance (e.g., bitterness) and displayed differences in worty-off flavor, malty flavor, and astringency. In alcohol-free beers, worty-off flavor was most pronounced in dominating between 5 and 30 s and malty flavor increased after swallowing. For bitterness and astringency, higher alcohol content resulted in higher flavor dominance, especially prior to swallowing (≤40 sec). Based on these findings, we provide some brief advice to minimize unfavorable flavor experience during consumption of beer with lower alcohol. For now, consumers who want to enjoy beers with lower alcohol should consider flavor changes and focus on the favored and defocus on the less favored flavors.

11.
Phytomedicine ; 23(11): 1127-33, 2016 Oct 15.
Artículo en Inglés | MEDLINE | ID: mdl-26656227

RESUMEN

PURPOSE: To gain further insight into the strength of evidence and extent of possible biases in the scope of studies investigating the impact of garlic and garlic supplement intake on biomarkers of cardiovascular disease, we performed an umbrella review of all published meta-analyses synthesizing data from both observational studies and randomized controlled trials. METHODS: Electronic database PubMed (between 1966 and June 2015) was searched for systematic reviews and meta-analyses using following search terms: ("garlic" OR "allium sativum" OR "allicin" OR "organosulfur") AND ("cardiovascular" OR "coronary" OR "cholesterol" OR "triglyceride" OR "atherosclerosis" OR "blood pressure" OR "hypertension" OR "blood glucose") AND ("systematic review" OR "meta-analysis"), with no restriction to calendar data and language. Hand-search of reference lists and relevant clinical guidelines was performed as well. RESULTS: Nine systematic reviews investigated the effects of garlic on lipid parameters and eight systematic reviews analyzed the effects on blood pressure parameters were identified. Eight of nine meta-analyses synthesizing the effect of garlic on blood lipids reported significantly decreased total cholesterol levels. Inconsistent results could be detected for HDL-cholestrol, LDL-cholesterol, and triacylglycerols. The effect of garlic on systolic blood pressure showed consistent results across publications with 7 out of 8 meta-analyses demonstrating a substantial decrease in systolic blood pressure. Similar results could be reported regarding the effect of garlic on diastolic blood pressure, i.e. 6 out of 8 meta-analyses detected significant reductions in diastolic blood pressure levels following interventions with garlic. CONCLUSION: According to the data summarized in the present umbrella review, garlic preparations as well as garlic exerted some positive effects on indicators and biomarkers of cardiovascular disease, typically without causing any serious side effects. However, with regard to the substantial heterogeneities between the different trials enrolled in the various meta-analyses of this review, a conservative interpretation of the outcome seems to be appropriate.


Asunto(s)
Enfermedades Cardiovasculares/prevención & control , Ajo , Presión Sanguínea/efectos de los fármacos , Enfermedades Cardiovasculares/dietoterapia , Enfermedades Cardiovasculares/metabolismo , Colesterol/sangre , LDL-Colesterol/sangre , Suplementos Dietéticos/efectos adversos , Humanos , Hipertensión/dietoterapia , Hipertensión/tratamiento farmacológico , Lípidos/sangre , Metaanálisis como Asunto , Ensayos Clínicos Controlados Aleatorios como Asunto , Triglicéridos/sangre
12.
Front Psychol ; 7: 1691, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-27840619

RESUMEN

Imagined food consumption is a method of elaborately imagining oneself eating a specific food that, when repeated 30 times, has been shown to decrease subsequent intake of the same food. The technique relies on a memory-based habituation process when behavioral and motivational responses to a stimulus decrease after its repeated presentation. Thus, repeatedly imagining food consumption leads to food-specific habituation effects. Large numbers of imagined consumption repetitions are effortful and time consuming and can be problematic when applied in interventions with the goal of reducing food intake. In the present study, we assessed the efficacy of the technique at smaller numbers of repetitions while testing motor simulation as a potential facilitator of the habituation-based consumption-reduction effect. 147 participants imagined eating chocolate pudding 15 or 3 consecutive times and simultaneously performed either facilitating or not-facilitating eating movements. Results showed that participants who imagined eating the chocolate pudding 15 times (M15 = 178.20, SD15 = 68.08) ate more of the pudding than those who imagined consuming it 3 times (M3 = 150.73, SD3 = 73.31). The nature of the motor movements that were performed did not impact this effect. The data suggest that the imagined food consumption technique can result in an unexpected increase in food consumption, when smaller numbers of imagination repetitions are performed.

13.
PLoS One ; 11(6): e0157461, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-27310919

RESUMEN

BACKGROUND: The current state of knowledge regarding the association of dairy products and weight gain, overweight, and obesity is based on studies reporting contradicting and inconclusive results. The aim of the present study was thus to clarify the link between dairy consumption in relation to changes in anthropometric measures/adiposity by a meta-analytical approach. METHODS: For the meta-analysis PubMed, EMBASE, Web of Sciences, and google scholar were searched by two independent authors up to May 2016 with no restriction to language or calendar date. Prospective cohort studies reporting about intake of dairy consumption (including milk, yogurt, cheese, butter) and changes in body weight or waist circumference, risk of overweight, obesity, or weight gain were eligible. Pooled effects were calculated using a random effects model, and also a fixed effect model for sensitivity analysis. Due to the heterogeneity of statistical analytical approaches of the studies the analysis were done separately for beta-coefficients of changes in body weight and/or waist circumference per serving of dairy, for differences in weight gain/gain in waist circumference when comparing extreme categories of dairy consumption, and for odds ratios in regard to weight gain, overweight/obesity, or abdominal obesity. FINDINGS: 24 studies (27 reports) met the inclusion criteria for the systematic review, and 22 studies provided sufficient data for inclusion in the meta-analysis. The meta-analysis of the five studies on changes in body weight per serving of dairy no significant results could be found for whole fat dairy and low fat dairy. However, there was inverse association between changes in body weight for each serving's increase of yogurt (beta: -40.99 gram/year, 95% CI, -48.09 to -33.88), whereas each serving's increase of cheese was positively associated (beta: -10.97 gram/year, 95% CI, 2.86 to 19.07). Furthermore, the highest dairy intake category was associated with a reduced risk of abdominal obesity (OR: 0.85; 95% CI, 0.76 to 0.95), and risk of overweight (OR: 0.87; 95% CI, 0.76 to 1.00) compared to the lowest intake category. No significant association could be observed for risk of weight gain. CONCLUSION: In summary the results of the meta-analysis still reflect that dairy consumption was not positively related to changes in body weight. Yogurt was the only dairy food that showed some evidence for a beneficial effect, where higher intakes were inversely associated a reduced risk of obesity, changes in body weight or waist circumference. Further research is needed, since the overall interpretation of the results is limited by heterogeneous risk estimates.


Asunto(s)
Productos Lácteos/análisis , Grasas de la Dieta/administración & dosificación , Obesidad Abdominal/epidemiología , Adolescente , Adulto , Animales , Antropometría , Estudios de Cohortes , Dieta/métodos , Ingestión de Energía/efectos de los fármacos , Femenino , Humanos , Persona de Mediana Edad , Obesidad Abdominal/diagnóstico , Obesidad Abdominal/etiología , Oportunidad Relativa , Circunferencia de la Cintura/efectos de los fármacos , Aumento de Peso/efectos de los fármacos
14.
Adv Nutr ; 7(6): 994-1004, 2016 11.
Artículo en Inglés | MEDLINE | ID: mdl-28140319

RESUMEN

The objective of this study was to develop a scoring system (NutriGrade) to evaluate the quality of evidence of randomized controlled trial (RCT) and cohort study meta-analyses in nutrition research, building upon previous tools and expert recommendations. NutriGrade aims to assess the meta-evidence of an association or effect between different nutrition factors and outcomes, taking into account nutrition research-specific requirements not considered by other tools. In a pretest study, 6 randomly selected meta-analyses investigating diet-disease relations were evaluated with NutriGrade by 5 independent raters. After revision, NutriGrade was applied by the same raters to 30 randomly selected meta-analyses in the same thematic area. The reliability of ratings of NutriGrade items was calculated with the use of a multirater κ, and reliability of the total (summed scores) was calculated with the use of intraclass correlation coefficients (ICCs). The following categories for meta-evidence evaluation were established: high (8-10), moderate (6-7.99), low (4-5.99), and very low (0-3.99). The NutriGrade scoring system (maximum of 10 points) comprises the following items: 1) risk of bias, study quality, and study limitations, 2) precision, 3) heterogeneity, 4) directness, 5) publication bias, 6) funding bias, 7) study design, 8) effect size, and 9) dose-response. The NutriGrade score varied between 2.9 (very low meta-evidence) and 8.8 (high meta-evidence) for meta-analyses of RCTs, and it ranged between 3.1 and 8.8 for meta-analyses of cohort studies. The κ value of the ratings for each scoring item varied from 0.32 (95% CI: 0.22, 0.42) for risk of bias for cohort studies and 0.95 (95% CI: 0.91, 0.99) for study design, with a mean κ of 0.66 (95% CI: 0.53, 0.79). The ICC of the total score was 0.81 (95% CI: 0.69, 0.90). The NutriGrade scoring system showed good agreement and reliability. The initial findings regarding the performance of this newly established scoring system need further evaluation in independent analyses.


Asunto(s)
Investigación Biomédica/normas , Estudios de Evaluación como Asunto , Ciencias de la Nutrición/normas , Ensayos Clínicos Controlados Aleatorios como Asunto/normas , Estudios de Cohortes , Humanos , Metaanálisis como Asunto , Reproducibilidad de los Resultados , Proyectos de Investigación
15.
PeerJ ; 3: e1337, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-26528408

RESUMEN

Notwithstanding a growth in popularity and consumption of gluten-free (GF) food products, there is a lack of substantiated analysis of the nutritional quality compared with their gluten-containing counterparts. To put GF foods into proper perspective both for those who need it (patients with celiac disease) and for those who do not, we provide contemporary data about cost and nutritional quality of GF food products. The objective of this study is to develop a food composition database for seven discretionary food categories of packaged GF products. Nutrient composition, nutritional information and cost of foods from 63 GF and 126 gluten-containing counterparts were systematically obtained from 12 different Austrian supermarkets. The nutrition composition (macro and micronutrients) was analyzed by using two nutrient composition databases in a stepwise approximation process. A total of 63 packaged GF foods were included in the analysis representing a broad spectrum of different GF categories (flour/bake mix, bread and bakery products, pasta and cereal-based food, cereals, cookies and cakes, snacks and convenience food). Our results show that the protein content of GF products is >2 fold lower across 57% of all food categories. In 65% of all GF foods, low sodium content was observed (defined as <120 mg/100 g). Across all GF products, 19% can be classified as source high in fiber (defined as >6g/100 g). On average, GF foods were substantially higher in cost, ranging from +205% (cereals) to +267% (bread and bakery products) compared to similar gluten-containing products. In conclusion, our results indicate that for GF foods no predominant health benefits are indicated; in fact, some critical nutrients must be considered when being on a GF diet. For individuals with celiac disease, the GF database provides a helpful tool to identify the food composition of their medical diet. For healthy consumers, replacing gluten-containing products with GF foods is aligned with substantial cost differences but GF foods do not provide additional health benefits from a nutritional perspective.

16.
PLoS One ; 10(8): e0135772, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-26280449

RESUMEN

The characteristic trait of individuals developing a pathological obsession and preoccupation with healthy foods and a restrictive and avoidant eating behavior is described as orthorexia nervosa (ON). For ON, neither universal diagnosis criteria nor valid tools for large-scale epidemiologic assessment are available in the literature. The aim of the current study is to analyze the psychometric properties of a translated German version of the ORTO-15 questionnaire. The German version of the ORTO-15, a eating behavior and dieting habits questionnaire were completed by 1029 German-speaking participants (74.6% female) aged between 19 and 70 years (M = 31.21 ± 10.43 years). Our results showed that after confirmatory factor analysis, the best fitting model of the original version is a single-factor structure (9-item shortened version: ORTO-9-GE). The final model showed only moderate internal consistency (Cronbach's alpha = .67), even after omitting 40% of the original question. A total of 69.1% participants showed orthorectic tendencies. Orthorectic tendencies are associated with special eating behavior features (dieting frequency, vegetarian and vegan diet). Education level did not influence ON tendency and nutritional students did not show higher ON tendency compared to students from other disciplines. This study is the first attempt to translate and to evaluate the psychometric properties of a German version of the ORTO-15 questionnaire. The ORTO-9-GE questionnaire, however, is only a mediocre tool for assessing orthorectic tendencies in individuals and shows moderate reliability and internal consistency. Our research suggests, that future studies are needed to provide more reliable and valid assessment tools to investigate orthorexia nervosa.


Asunto(s)
Trastornos de Alimentación y de la Ingestión de Alimentos/diagnóstico , Psicometría/métodos , Encuestas y Cuestionarios , Adulto , Anciano , Análisis Factorial , Conducta Alimentaria , Femenino , Conductas Relacionadas con la Salud , Humanos , Masculino , Persona de Mediana Edad , Psicometría/estadística & datos numéricos , Reproducibilidad de los Resultados , Adulto Joven
17.
Front Psychol ; 5: 1391, 2014.
Artículo en Inglés | MEDLINE | ID: mdl-25506337

RESUMEN

Research has shown that imagining food consumption leads to food-specific habituation effects. In the present research, we replicated these effects and further examined whether the depletion of self-regulatory resources would reduce the habituation effects of imagined food consumption. Since self-regulatory resources have been shown to reduce habituation effects during the perception of emotional stimuli, we expected a reduction in habituation effects from imagined food consumption when self-regulatory resources were depleted. In Study 1, we replicated habituation effects as a response to imagining gummy bear consumption with a high (36) and medium number (18) of repetitions in a camouflaged taste test. Participants imagining gummy bear intake showed decreased food intake compared with participants who imagined putting a coin into a laundry machine. The number of repetitions did not significantly moderate the observed habituation effect. In Study 2, we investigated whether self-regulatory depletion would impede habituation effects evoked by the imagination of walnut consumption. Participants in a depleted state did not show a reduction in food intake after imagining walnut intake compared with participants in a non-depleted state. We discuss directions for future research and processes that might underlie the observed moderating effect of self-regulatory resources.

19.
Front Psychiatry ; 6: 48, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-25904873
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