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The global implementation of structural policies to tackle obesity has been slow, likely because of the competing interests of governments and the food industry. We used the discussion of the Chilean Food Labeling Law to identify influential stakeholders in the media and their frames during different periods of the law's implementation. This involved a content analysis of the food regulation media coverage in five key periods from 2007, when the food bill was first introduced in Congress, to 2018, when the second phase of the law was implemented (N = 1295). We found that most of the law coverage was through elite press. Half of the sources were from the food industry (26.7%) and government (26.2%), while other stakeholders, were less prevalent. Frames were mostly competing, except for cooperation with the law. The main food industry frame used during the discussion of the law was the "economic threat" (41.9%), whose prevalence decreased at the post-implementation period (13%, p < 0.01). No other relevant stakeholders changed their framing. Our results highlight that there are several aspects of public health communication, such as the type of media used, the involvement of scholars and civil society, and the framing, that could be improved to advance food environment policies.
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Indústria Alimentícia , Rotulagem de Alimentos , Chile/epidemiologia , Alimentos , Política NutricionalRESUMO
OBJECTIVE: To evaluate the effectiveness of the 8-week, community health worker (CHW)-led La Vida Buena childhood obesity program among Latino children 5 to 8 years old in a rural county along the U.S.-Mexico border. METHODS: This quasi-experimental study used a community-based participatory research approach to compare the effectiveness of the La Vida Buena (The Good Life) curriculum as compared with a single educational session. We took anthropomorphic measures and administered parent-reported nutrition and physical activity surveys at baseline, 3 months, and 6 months. The study took place between 2017 and 2020 in Santa Cruz County, Arizona. RESULTS: Change in body mass index (BMI) z-score was negligible for both groups. The parent-reported behavior indicated a shift toward healthier family behaviors and environment in the intervention group. IMPLICATIONS FOR PRACTICE: This study adds to the growing literature of CHW-led childhood obesity interventions. The engagement of the CHWs in all aspects of the intervention helped to facilitate important behavior changes. Future interventions should emphasize health and wellness rather than BMI z-score and include community, socioeconomic, and systems-level interventions to promote healthy environments.
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Obesidade Infantil , Humanos , Criança , Pré-Escolar , Obesidade Infantil/prevenção & controle , Agentes Comunitários de Saúde , México , Pais/educação , Hispânico ou Latino , Promoção da Saúde/métodosRESUMO
Although cancer is the leading cause of death among Mexican-Americans, few community-based programs target obesity reduction as a way to reduce the prevalence of obesity-related cancer in underserved populations. Evidence suggests that obesity correlates with 13 types of cancer. The objective is to provide an overview of evaluation and selection of evidence-based content; details of the implementation process; modifications needed to tailor education programs to specific needs of different target audiences; and demonstrate challenges of implementing a community-based prevention program intended to reduce cancer incidence and mortality in Mexican-Americans. We used the Social Cognitive Theory (SCT) to develop a 10-topic menu of educational classes using elements of multiple evidence-based curricula. Outcome measures for physical activity and nutrition were determined using the International Physical Activity Questionnaire (IPAQ) and the Dietary Screener Questionnaire (DSQ). Weight status was determined using weight, body fat, and body mass index (BMI). To date, 2845 adults received wellness education from our program. Multiple delivery models were used to reach a larger audience; they included a 4-week model, 5-week model, employer model, low-income housing, 1- and 2-h sessions, and clinic encounters. Individuals were given education at multiple community locations including senior centers (14%), churches (0.6%), employers (17.6%), low-income housing (8.2%), community centers (16.6%), clinics (11.5%), and schools (32.5%). Our study indicates that our delivery model is feasible and can disseminate evidence-based obesity education. Further investigation is necessary to assess long-term behavioral change and to assess the most effective model for delivery.
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Educação em Saúde , Americanos Mexicanos , Neoplasias , Obesidade , Adulto , Humanos , Currículo , Americanos Mexicanos/educação , México , Neoplasias/etnologia , Neoplasias/prevenção & controle , Obesidade/etnologia , Estados Unidos , Educação em Saúde/métodos , Educação em Saúde/organização & administraçãoRESUMO
ABSTRACT The prevention of diseases related to nutrition requires an approach that considers aspects that transcend the individual level in understanding food decisions. In this context, the family as an interpersonal determinant of eating behavior is gaining importance in developing behavioral change interventions that seek better nutritional health. This manuscript aims to describe the current evidence of how family variables influence its members' food choices and nutritional status. Specifically, we present evidence on family functioning, parental feeding styles, and family meals, as they are recent topics of interest in the area. The evidence shows that a better or balanced family functioning or some of its components (communication, conflicts, cohesion, among others); a parental feeding style that demands but listens to the requirements from children; and a higher frequency of family meals are associated with a lower Body Mass Index (BMI) and healthier eating habits, especially in children and adolescents. A deep understanding of family variables could guide weight management interventions and provide information that could explain why some interventions work and others do not.
RESUMEN La prevención de enfermedades relacionadas con la nutrición requiere de un enfoque que considere aspectos que transciendan el nivel individual en el entendimiento de las decisiones alimentarias. En este contexto, la familia como un determinante interpersonal de las conductas alimentarias, está ganando importancia en el desarrollo de intervenciones de cambio conductual que buscan una mejor salud nutricional. Este artículo tiene como objetivo describir la evidencia actual de cómo variables familiares influyen en las elecciones alimentarias y el estado nutricional de sus miembros. Específicamente, presentamos evidencia sobre el funcionamiento familiar, los estilos parentales de alimentación y las comidas familiares, ya que son temas recientes de interés en el área. La evidencia muestra que un mejor o equilibrado funcionamiento familiar o de algunos de sus componentes (comunicación, conflictos, cohesión, entre otros); un estilo parental que exige, pero escucha los requerimientos de los niños; y una mayor frecuencia de comidas familiares se asocian con un menor Índice de Masa Corporal (IMC) y hábitos alimentarios más saludables, especialmente en niños y adolescentes. Una comprensión profunda de las variables familiares podría orientar las intervenciones de control de peso y brindar información que explicaría por qué algunas intervenciones funcionan y otras no.
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Front-of-package warning label (FOPWL) policies incentivize the food industry to reduce the content of regulated nutrients in products. We explored changes in the content of nutrients of concern (sugar, saturated fat, trans fat, and sodium) and the percentage of products in the Peruvian food supply that would carry a FOPWL before and after Peru's implementation of FOPWLs. Longitudinal data on the top-selling foods and beverages (n = 94) were collected at three time points: three months before the implementation of the policy, four months after, and two years after. Using the nutritional information declared on products' labels, we compared quantities of nutrients of concern and the percentage of foods that would carry a FOPWL at each time point. Between the first and the third data collection, a decrease in the median sugar content of beverages was observed (from 9.0 to 5.9 g/100 mL, p = 0.005), accompanied by an increase in the use of nonnutritive sweeteners. This change drove the reduction of the percentage of beverages that would carry a FOPWL (from 59 to 31%, p = 0.011). Among foods, decreases were observed in saturated fat (from 6.7 to 5.9 g/100 g, p = 0.002). The percentage of foods that would carry a FOPWL according to their nutritional profile declined from before to after implementation of the policy (from 82 to 62%, p < 0.001). The study shows that the industry reformulated products in Peru after implementation of its FOPWL policy.
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Rotulagem de Alimentos , Alimento Processado , Peru , Bebidas , Abastecimento de Alimentos , Açúcares , Edulcorantes , Ácidos Graxos , Valor NutritivoRESUMO
Given the lack of scales with a robust psychometric assessment of self-efficacy related to obesity in early adolescence, we aimed to obtain an instrument with high-quality validity and reliability items. Nonrandom samples (N = 2371) classified boys (1174, M = 12.83, SD = 0.84) and girls (1197, M = 12.68, SD = 0.78) from Mexico City and some cities of the Mexican Republic with obesity rates near to the national level mean. A multi-validity process and structural invariance analysis using the Perceived Self-efficacy Scale for Obesity Prevention were performed. A two-factor-physical activity and healthy eating-model with high effect-sized values-girls R2 (0.88, p < 0.01) and boys R2 (0.87, p < 0.01)-were obtained. Each factor explained more than half of the variance with high-reliability coefficients in each group and acceptable adjustment rates. The self-efficacy scale proved to have only girls, an invariant factor structure, or a psychometric equivalence between the groups. The obtained scale showed that a two-factor structure is feasible and appropriate, according to the highest quality of validity and reliability.
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School-based studies, despite the large number of studies conducted, have reported inconclusive results on obesity prevention. The sample size is a major constraint in such studies by requiring large samples. This pooled analysis overcomes this problem by analysing 5926 students (mean age 11·5 years) from five randomised school-based interventions. These studies focused on encouraging students to change their drinking and eating habits, and physical activities over the one school year, with monthly 1-h sessions in the classroom; culinary class aimed at developing cooking skills to increase healthy eating and attempts to family engagement. Pooled intention-to-treat analysis using linear mixed models accounted for school clusters. Control and intervention groups were balanced at baseline. The overall result was a non-significant change in BMI after one school year of positive changes in behaviours associated with obesity. Estimated mean BMI changed from 19·02 to 19·22 kg/m2 in the control group and from 19·08 to 19·32 kg/m2 in the intervention group (P value of change over time = 0·09). Subgroup analyses among those overweight or with obesity at baseline also did not show differences between intervention and control groups. The percentage of fat measured by bioimpedance indicated a small reduction in the control compared with intervention (P = 0·05). This large pooled analysis showed no effect on obesity measures, although promising results were observed about modifying behaviours associated with obesity.
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Promoção da Saúde/métodos , Sobrepeso , Obesidade Infantil , Avaliação de Programas e Projetos de Saúde , Brasil , Criança , Exercício Físico , Humanos , Sobrepeso/prevenção & controle , Obesidade Infantil/prevenção & controle , Serviços de Saúde Escolar , Instituições AcadêmicasRESUMO
This article examines the policy change process that resulted in the current sugar-sweetened beverages taxes in Mexico and Chile, using the Kaleidoscope Model for Policy Change, a framework developed for nutrition and food policy change analysis. We used a qualitative study design, including 24 key informant (KI) interviews (16 researchers, 5 civil society representatives and 3 food/beverage industry representatives), encompassing global and in-country perspectives. The analysis shows concurrence with the Kaleidoscope Model, highlighting commonalities in the policy change process. These included the importance of focusing events and coalitions for agenda-setting. Both top-down executive leadership and bottom-up pressure from civil society coalitions were important for the policy adoption as were flexible framing of the tax, and taking advantage of windows of opportunity. In both countries, the tax resulted from national, revenue-seeking fiscal reforms and in sub-optimal tax rates, as a result of the industry influence. KIs also discussed emerging evaluation results, highlighting differences in interpretation concerning the magnitude of change from the tax, and shared potential modifications to the current policies. This analysis contributes to a greater understanding of the policy change process focused on obesity prevention, using an innovative theoretical framework developed specifically for food and nutrition policy.
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Bebidas Adoçadas com Açúcar , Bebidas , Chile , Humanos , México , Política Nutricional , Obesidade/prevenção & controle , ImpostosRESUMO
Children of Hispanic origin bear a high risk of obesity. Child weight gain trajectories are influenced by the family environment, including parent feeding practices. Excessive body fat can result in unhealthful metabolic and lipid profiles and increased risk of metabolic diseases. The objective was to estimate criterion validity of an obesity risk assessment tool targeting Spanish-speaking families of Mexican origin using anthropometric measures and blood values of their young children. A cross-sectional study design with five data collection sessions was conducted over an eight-week period and involved 206 parent/child dyads recruited at Head Start and the Special Supplemental Nutrition Program for Women, Infants and Children in Northern California. Main outcome measures were criterion validity of Niños Sanos, a pediatric obesity risk assessment tool, using anthropometric measures and blood biomarkers. Niños Sanos scores were inversely related to child BMI-for-age percentiles (p = 0.02), waist-for-height ratios (p = 0.05) and inversely related to blood biomarkers for the metabolic index (p = 0.03) and lipid index (p = 0.05) and positively related to anti-inflammatory index (p = 0.047). Overall, children with higher Niños Sanos scores had more healthful lipid, metabolic and inflammatory profiles, as well as lower BMI-for-age percentiles and waist-to height ratios, providing evidence for the criterion validity of the tool. Niños Sanos can be used by child obesity researchers, by counselors and medical professionals during clinic visits as a screening tool and by educators as a tool to set goals for behavior change.
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Biomarcadores/sangue , Índice de Massa Corporal , Hispânico ou Latino/estatística & dados numéricos , Obesidade Infantil/diagnóstico , Pobreza/estatística & dados numéricos , Medição de Risco/estatística & dados numéricos , Adulto , Glicemia/análise , California/epidemiologia , Pré-Escolar , Estudos Transversais , Emigrantes e Imigrantes , Feminino , Comportamentos Relacionados com a Saúde , Humanos , Inflamação/sangue , Insulina/sangue , Lipídeos/sangue , Masculino , México/etnologia , Obesidade Infantil/epidemiologia , Razão Cintura-EstaturaRESUMO
Policies to require warnings on the front of food and drinks high in nutrients of concern (e.g., added sugar, sodium, or saturated fat) are becoming increasingly common as an obesity prevention strategy. Colombia, a country with growing prevalence of obesity, is considering implementing a similar policy. The objective of this study was to assess perceptions and reactions to different warning designs. We conducted a randomized experiment in an online panel of adults age > 18y (n = 1997). Participants were randomized to view one of four labels: a control label (barcode), an octagon warning, a circle warning, and a triangle warning. Participants viewed their randomly assigned label on a series of products and answered questions (continuous outcomes ranged from 1-4). Compared to the control, all warnings led to higher perceived message effectiveness (increase in mean from 1.79 in the control to 2.59-2.65 in the warning conditions, p < 0.001), a higher percentage of participants who correctly identified products high in nutrients of concern (from 48% in the control condition to 84-89% in the warning conditions, p < 0.001), and reduced intentions to purchases these products (decrease in mean from 2.59 to 1.99-2.01 in the warning conditions, p < 0.001). Relative to the control, warnings performed similarly across education levels, suggesting this policy would be equitable in Colombia. Looking at differences by warning type, the pattern of results suggested that the octagon warnings performed best. After viewing all label types, 49% of participants selected the octagon warning as the one that most discouraged them from consuming products high in nutrients of concern, while 21% and 27% selected the circle and triangle warning. Colombian policymakers should consider the octagon warning as part of a front-of-package labeling policy to help consumers identify and reduce consumption of foods and drinks high in nutrients of concern.
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Comportamento do Consumidor , Gorduras na Dieta/efeitos adversos , Gorduras na Dieta/análise , Açúcares da Dieta/administração & dosagem , Açúcares da Dieta/efeitos adversos , Ácidos Graxos/administração & dosagem , Ácidos Graxos/efeitos adversos , Comportamento Alimentar/psicologia , Análise de Alimentos , Rotulagem de Alimentos/legislação & jurisprudência , Rotulagem de Alimentos/métodos , Alimentos , Legislação sobre Alimentos , Política Nutricional/legislação & jurisprudência , Obesidade/prevenção & controle , Bebidas Adoçadas com Açúcar/efeitos adversos , Bebidas Adoçadas com Açúcar/análise , Adulto , Colômbia/epidemiologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Obesidade/epidemiologia , Prevalência , Adulto JovemRESUMO
Public discussion, advocacy, and legislative consideration of policies aimed at reducing consumption of processed foods, such as sugar-sweetened beverage (SSB) taxes and mandatory front-of-package (FOP) warning labels, may stimulate product reformulation as a strategy to prevent regulation. In Colombia, there have been major legislative pushes for SSB taxes and FOP labels, although neither has passed to date. In light of the ongoing policy debate and successful implementation of similar policies in Peru and Chile, we explored manufacturer reformulation in the Colombian food supply. We compared the quantities of nutrients of concern (including sugar, sodium, and saturated fat) from the nutrition facts panels of the same 102 packaged foods and 36 beverages from the top-selling brands in Colombia between 2016 and 2018. Our analyses showed a substantial decrease in median sugar content of beverages, from 9.2 g per 100 mL to 5.2 g per 100 mL, and an increase in the percentage of beverages containing non-nutritive sweeteners (NNS), from 33% to 64% (p = 0.003). No meaningful changes in the quantities of nutrients of concern among foods were observed. Our findings suggest little reformulation has occurred in Colombia in the absence of mandatory policies, except for the substitution of sugar with NNS among beverages.
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Bebidas/análise , Fast Foods/análise , Rotulagem de Alimentos/tendências , Embalagem de Alimentos/tendências , Abastecimento de Alimentos/estatística & dados numéricos , Colômbia , Comportamento do Consumidor , Gorduras na Dieta/análise , Açúcares da Dieta/análise , Rotulagem de Alimentos/legislação & jurisprudência , Embalagem de Alimentos/legislação & jurisprudência , Embalagem de Alimentos/métodos , Preferências Alimentares , Abastecimento de Alimentos/legislação & jurisprudência , Abastecimento de Alimentos/métodos , Humanos , Política Nutricional , Valor Nutritivo , Sódio na Dieta/análiseRESUMO
Abstract Background Fatty acids are important components of diet that may influence the development of CVD. Objective To verify the relationship of dietary fatty acids with cardiometabolic markers in individuals at the cardiometabolic risk. Methods This cross-sectional study involved 282 subjects (116 M/166 F, 42 ± 16 years) attended the Cardiovascular Health Care Program, Universidade Federal de Viçosa (Brazil). Anthropometric and body composition measurements as well as metabolic and inflammatory markers were assessed by standard procedures. Demographic and lifestyle variables were obtained by semi-structured questionnaire. Food consumption was evaluated by 24h recall. Student's t-test or Mann-Whitney-U test and chi-square test were used, considering the statistical significance level of 5% probability. Results Individuals who eaten fat, fatty acids saturated and fatty acids polyunsaturated above recommendation (> 35, 7%, and 10% of caloric intake) were more likely to be overweight (p < 0.05). Those individuals with higher intake of medium-chain fatty saturated acids (≥ 1.05 g/d) had lower values (p < 0.05) of body mass index, waist circumference, waist-hip ratio and waist-height ratio and higher values (p < 0.05) of total leukocytes, C-reactive protein and total cholesterol, and LDL. Subjects with higher of palmitoleic acid intake (≥ 0.94 g/d) presented higher values of BMI, fat percentage and HOMA-IR (p < 0.05). Conclusion This cross-sectional study found different associations of dietary fat and cardiometabolic risk related to adiposity and inflammatory markers, according with chain-size and saturation, indicating the need the more detailed on the dietary assessment of obese patients to identify risk factors and established best strategies to control. (Int J Cardiovasc Sci. 2020; [online].ahead print, PP.0-0)
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Humanos , Masculino , Feminino , Adulto , Pessoa de Meia-Idade , Ácidos Graxos/efeitos adversos , Fatores de Risco Cardiometabólico , Obesidade/prevenção & controle , Gorduras na Dieta , Biomarcadores , Estudos Transversais , Síndrome Metabólica/dietoterapia , Síndrome Metabólica/prevenção & controle , Sobrepeso , Adiposidade , Obesidade/complicaçõesRESUMO
Chile has implemented several strategies to decrease the burden of obesity and chronic diseases. The Food Labeling and Advertising Law (Law 20.606) requires a front-of-package "high in" warning label when energy and nutrients of concern (ENC) (total sugar, saturated fats, sodium) exceed established limits. This study aims to evaluate the impact of Law 20.606 on the ENC declaration of packaged foods in Chile, before and after the law implementation. We analyzed food nutritional labeling declarations from 70% of the most consumed packaged foods in Chile. Data collection was conducted in 2013 and 2019 in Santiago. Pictures from all sides of the package were taken from 476 products, classified into 16 food groups. All food groups had changes in the ENC declaration during the study period. Total sugar content showed the highest reduction (-15.0%; p = 0.001). Dairy, confitures and similar and sugary beverages had the greatest reduction in energy and total sugar content (p < 0.01). Energy, total sugar and sodium front of package "high in" simulation was significantly reduced in dairy, sugary beverages, flour-based foods, confitures and similar, fish and seafoods, fats and oils, spices, condiments and sauces and sugars (p < 0.05). We observed that companies reformulated products to adapt to the new regulation.
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Publicidade/legislação & jurisprudência , Análise de Alimentos/estatística & dados numéricos , Rotulagem de Alimentos/legislação & jurisprudência , Nutrientes/análise , Política Nutricional/legislação & jurisprudência , Chile , Gorduras na Dieta/análise , Açúcares da Dieta/análise , Embalagem de Alimentos , Implementação de Plano de Saúde , Humanos , Estudos Longitudinais , Valor Nutritivo , Sódio na Dieta/análiseRESUMO
BACKGROUND: the present study aimed to investigate the effects of a single nutritional preventive session previous to a critical period linked to fat gain in university students with overweightness and obesity, emulating a nutritional session of a public health system. METHODS: In this single-blind randomized controlled trial, 23 students met all the criteria to be included (20.91 ± 2.52-year-old; 52.2% women) who were divided into two groups: intervention group (IG) and control group (CG). Fat mass (FM) by dual-energy X-ray absorptiometry (DXA), physical activity by accelerometry, feeding evaluation through three questionnaires, and a set of healthy lifestyle recommendations were evaluated before and after the national holidays (NH). RESULTS: Our findings showed that FM increased significantly in the CG, but not in the IG (CG = 428.1 g; IG = 321.9 g; Δ = 106.2 g; p = 0.654 [95% CI = -379.57, 591.92]). However, no differences were found during the NH between them (Hedges' g effect size = 0.19; p = 0.654). In addition, no statistical differences were observed between groups in feeding evaluations, the set of recommendations performed, and physical activity. CONCLUSION: a single preventive session before a critical period, using a similar counselling approach as used in the public health system, might not be enough to promote changes in eating and physical activity patterns and preventing fat gain in overweight/obese university students. Long-term interventions are a must.
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Estilo de Vida , Obesidade , Sobrepeso , Universidades , Adolescente , Feminino , Humanos , Masculino , Obesidade/prevenção & controle , Método Simples-Cego , Estudantes , Adulto JovemRESUMO
Background: Maternal overweight, infant feeding and early growth velocity are risk factors for obesity later in life. The first one thousand days are a window of opportunity to program health and disease. Exclusive breastfeeding may protect against obesity; however, it is not consistently practiced. Obesity rates have been increasing worldwide. Overweight or obese women have lower rates of breastfeeding and face mechanical, psychological and biological difficulties. Breastfeeding counselling is a successful strategy to support breastfeeding in normal weight women; but there is a lack of evidence on its effectiveness in overweight women. Our purpose is to evaluate a new approach to exclusive breastfeeding counselling based on Carl Rogers' Centred-Client Theory in overweight women, and to examine effects on breastfeeding prevalence, infant growth velocity and maternal postpartum weight loss. Methods: A two-arm simple randomized controlled trial will be conducted in overweight and obese women recruited in a Baby Friendly Hospital in Bogotá, Colombia. The intervention is exclusive breastfeeding counselling based on Rogers' theory but adapted for overweight women; it will be performed during the last month of pregnancy, 24 h after delivery and during early infancy (1 and 3 months postpartum). The primary outcomes will be exclusive breastfeeding prevalence, infant growth velocity and maternal weight loss from birth up to 4 months after delivery; and the secondary outcomes will be prolactin and macronutrient levels in breast milk and serum prolactin levels. Intention to treat analysis will be performed to estimate the effect of the new counselling approach compared to standard management on the prevalence of exclusive breastfeeding, infant growth velocity and maternal weight loss. Discussion: We hypothesize that the intervention will result in an increase in the initiation and maintenance of exclusive breastfeeding, allowing adequate infant growth velocity and maternal weight loss after delivery. It is hoped that the results of this trial will provide evidence to support public health policy on supporting breastfeeding in this vulnerable group of women. Trial registration: (UTN) U1111-1228-9913 February 20th 2019; ISRCTN15922904February 27th 2019, retrospectively registered.
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Aleitamento Materno/estatística & dados numéricos , Mães/psicologia , Obesidade/psicologia , Sobrepeso/psicologia , Complicações na Gravidez/psicologia , Adulto , Aleitamento Materno/psicologia , Desenvolvimento Infantil , Colômbia/epidemiologia , Feminino , Humanos , Lactente , Recém-Nascido , Período Pós-Parto/psicologia , Gravidez , Prevalência , Ensaios Clínicos Controlados Aleatórios como Assunto , Redução de Peso , Adulto JovemRESUMO
Childhood obesity is a global public health concern in developed and developing countries. Approximately 3 in 10 Panamanian children suffer from obesity, and overweight/obesity is responsible for the highest number of premature or avoidable deaths in this country. A formative community assessment and exploration of the built food environment was conducted. Analysis suggests that almost one-third of the children measured were overweight or obese, and the availability of foods recommended for optimal health is limited in this community. Actionable recommendations for intervention and future collaboration were provided, and stakeholders from all groups will continue to explore opportunities.
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Obesidade Infantil/epidemiologia , Índice de Massa Corporal , Criança , Pré-Escolar , Dieta , Feminino , Humanos , Masculino , Panamá/epidemiologiaRESUMO
ABSTRACT OBJECTIVE To evaluate the implementation and effectiveness of school-based interventions to prevent obesity conducted in Latin America and provide suggestions for future prevention efforts in countries of the region. METHODS Articles published in English, Spanish, and Portuguese between 2000 and 2017 were searched in four online databases (Google Scholar, PubMed, LILACS, and REDALYC). Inclusion criteria were: studies targeting school-aged children and adolescents (6-18 years old), focusing on preventing obesity in a Latin American country using at least one school-based component, reporting at least one obesity-related outcome, comprising controlled or before-and-after design, and including information on intervention components and/or process. RESULTS Sixteen studies met the inclusion criteria. Most effective interventions (n = 3) had moderate quality and included multi-component school-based programs to promote health education and parental involvement focused on healthy eating and physical activity behaviors. These studies also presented a better study designs, few limitations for execution, and a minimum duration of six months. CONCLUSIONS Evidence-based prevention experiences are important guides for future strategies implemented in the region. Alongside gender differences, an adequate duration, and the combined use of quantitative and qualitative evaluation methods, evidence-based prevention should be considered to provide a clearer and deeper understanding of the true effects of school-based interventions.
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Humanos , Criança , Adolescente , Exercício Físico , Obesidade/prevenção & controle , Serviços de Saúde Escolar , Brasil , América LatinaRESUMO
OBJECTIVE: To describe the methodology of a family-focused, culturally tailored program, Abriendo Caminos, for the prevention of excess weight gain in children. DESIGN: Randomized control trial with outcome assessment at pretest, posttest, and 6 months after intervention or abbreviated-attention control group. SETTING: Community setting across 5 sites (Illinois, California, Iowa, Texas, and Puerto Rico). PARTICIPANTS: Mexican American and Puerto Rican families (parent and 1 child aged 6-18 years). A sample size of 100 families (50 intervention and 50 control) per site (nâ¯=â¯500) will provide adequate power to detect intervention effects. INTERVENTION: Families will participate in 6 weekly, 2-hour group workshops on nutrition education through combined presentations and activities, family wellness, and physical activity. MAIN OUTCOME MEASURES: The primary outcome is prevention of excess weight gain in children; secondary outcomes include changes in child diet, specifically fruit, vegetable, and sugar-sweetened beverage consumption, and changes in parents' diets and improvement of family routines. Measures will be collected at baseline, postintervention, and 6 months after. ANALYSIS: Modeling to assess changes within and between experimental groups will be checked using standard methods including assessment of model fit, influence diagnostics, adjusted R2, and multicollinearity. Significance of effects will be examined using Type III tests.
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Dieta , Exercício Físico/fisiologia , Promoção da Saúde/métodos , Adolescente , Criança , Currículo , Feminino , Hispânico ou Latino , Humanos , Masculino , Obesidade Infantil/prevenção & controle , Porto Rico , Estados Unidos , Aumento de PesoRESUMO
Background and objectives: Body composition assessment can provide information associated with breast cancer patients' (BCP) prognosis, that can lead interventions to improve survival outcomes. The aim of this study was to evaluate the effect of an individualized nutrition intervention program on breast cancer patients using bioelectrical impedance vector analysis (BIVA). Materials and Methods: This is a pretest-posttest study in recently diagnosed nonmetastatic BCP undergoing antineoplastic treatment, free of co-morbidities and dietary supplementation. Body composition was assessed at baseline and 6 months after an individualized nutrition intervention program, by dual-energy X-ray absorptiometry and BIVA. According to BIVA, each participant was located in the bivariate tolerance ellipses for Mexican population (50%, 75%, and 95%). In clinical practice, the 50% and 75% ellipses are considered within normality ranges. Results: Nine nonmetastatic BCP completed the intervention and were included in the analysis. After the intervention, they decreased by 5.8 kg of body weight (IQR, 3-6; p < 0.05), 3.8 kg of fat mass (IQR, 0.1-4.2; p < 0.05), and 1.4 kg of fat-free mass (IQR, -0.1 to 4; p < 0.05) while appendicular skeletal muscle mass remained unchanged (-0.2 kg, IQR, -0.8 to 2.3; p = 0.4). Using BIVA at baseline, five participants were among the 50% and 75% ellipses, mainly located in the area corresponding to edema and low lean tissue, two in the cachexia quadrant and two in the athletic quadrant (≥95% ellipse). After 6 months of intervention, six out of nine participants were in the athletic quadrant and eight of nine BCP were above the 5° phase angle cut-off point. One patient initially presented cachexia (≥95% ellipse); at postintervention her vector changed to the 50% ellipse. Conclusions: An individualized nutrition intervention program designed for nonmetastatic BCP was effective to improve the nutritional status of BCP as assessed by BIVA, therefore BIVA can be a useful tool to monitor changes in nonmetastatic BCP body composition in research and clinical practice.
Assuntos
Neoplasias da Mama , Impedância Elétrica , Sarcopenia/diagnóstico , Absorciometria de Fóton , Adulto , Composição Corporal , Feminino , Humanos , Estado Nutricional , Sarcopenia/dietoterapia , Sarcopenia/patologiaRESUMO
Reducing children's exposure to food marketing is an important obesity prevention strategy. This narrative review describes current statutory regulations that restrict food marketing; reviews available evidence on the effects of these regulations; and compares policy design elements in Chile and the United Kingdom. Currently, 16 countries have statutory regulations on unhealthy food marketing to children. Restrictions on television advertising, primarily during children's programming, are most common. Schools are also a common setting for restrictions. Regulations on media such as cinema, mobile phone applications, print, packaging, and the internet are uncommon. Eleven evaluations of policies in 4 jurisdictions found small or no policy-related reductions in unhealthy food advertising, in part because marketing shifted to other programs or venues; however, not all policies have been evaluated. Compared with the United Kingdom, Chile restricts marketing on more products, across a wider range of media, using more marketing techniques. Future research should examine which elements of food marketing policy design are most effective at reducing children's exposure to unhealthy food marketing.