Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 146
Filtrar
1.
J Hum Evol ; 171: 103229, 2022 10.
Artigo em Inglês | MEDLINE | ID: mdl-36115145

RESUMO

In mammals, trait variation is often reported to be greater among males than females. However, to date, mainly only morphological traits have been studied. Energy expenditure represents the metabolic costs of multiple physical, physiological, and behavioral traits. Energy expenditure could exhibit particularly high greater male variation through a cumulative effect if those traits mostly exhibit greater male variation, or a lack of greater male variation if many of them do not. Sex differences in energy expenditure variation have been little explored. We analyzed a large database on energy expenditure in adult humans (1494 males and 3108 females) to investigate whether humans have evolved sex differences in the degree of interindividual variation in energy expenditure. We found that, even when statistically comparing males and females of the same age, height, and body composition, there is much more variation in total, activity, and basal energy expenditure among males. However, with aging, variation in total energy expenditure decreases, and because this happens more rapidly in males, the magnitude of greater male variation, though still large, is attenuated in older age groups. Considerably greater male variation in both total and activity energy expenditure could be explained by greater male variation in levels of daily activity. The considerably greater male variation in basal energy expenditure is remarkable and may be explained, at least in part, by greater male variation in the size of energy-demanding organs. If energy expenditure is a trait that is of indirect interest to females when choosing a sexual partner, this would suggest that energy expenditure is under sexual selection. However, we present a novel energetics model demonstrating that it is also possible that females have been under stabilizing selection pressure for an intermediate basal energy expenditure to maximize energy available for reproduction.


Assuntos
Composição Corporal , Metabolismo Energético , Adulto , Idoso , Envelhecimento/metabolismo , Animais , Metabolismo Energético/fisiologia , Feminino , Humanos , Masculino , Mamíferos , Reprodução/fisiologia , Caracteres Sexuais
2.
Women Health ; 61(8): 751-762, 2021 09.
Artigo em Inglês | MEDLINE | ID: mdl-34392814

RESUMO

There is little information on the determinants of healthy sleep habits (HSH) among women of childbearing age (WOCBA). The objective was to identify WOCBA's beliefs on HSH based on the Reasoned Action Approach. Thirty WOCBA (18-41 years) were randomly assigned to answer questions regarding one of three HSH: avoiding screen use in bed; avoiding caffeine, alcohol and cigarettes before bedtime; and having a regular bedtime and wake up time even on weekends. A content analysis was performed independently by two experts to identify the most important beliefs using a 75% cumulative frequency of mention. Participants reported that adopting the HSH would improve sleep, avoid side effects, help them relax before bedtime and make them feel like they were missing out on things. Adopting the HSH was associated with feeling relaxed and satisfied, but also qualified as unpleasant and abnormal. WOCBA mentioned their parents, partner, siblings and children would approve/disapprove if they adopted the HSH and were the most/least likely to adopt them. Barriers were having activities in the evening and social situations. Facilitating factors were putting their electronic devices away from bed, having alternatives and a regular schedule. These results can guide the development of interventions promoting HSH among WOCBA.


Assuntos
Hábitos , Sono , Adolescente , Adulto , Feminino , Nível de Saúde , Humanos , Pais , Inquéritos e Questionários , Adulto Jovem
3.
Fam Community Health ; 43(1): 59-73, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-31764307

RESUMO

To identify food sources of shortfall nutrients consumed by adolescents (n = 3156), data from the National Health and Nutrition Examination Survey (NHANES) (2011-2014) were used. Some of the food groups commonly consumed by adolescents made a significant contribution to shortfall nutrient intakes in the diet. Many food sources that provided significant amounts of shortfall nutrients were from foods that also provided nutrients to limit. Awareness of nutrient intakes and food sources is essential to establish dietary guidance in a practical context. Efforts to continue monitoring the food sources of nutrients consumed by adolescents will be important to improve the current knowledge on this topic of research.


Assuntos
Abastecimento de Alimentos/métodos , Nutrientes/química , Inquéritos Nutricionais/métodos , Adolescente , Adulto , Criança , Feminino , História do Século XXI , Humanos , Masculino , Estados Unidos , Adulto Jovem
4.
Behav Sleep Med ; 17(5): 634-645, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-29436861

RESUMO

Objective/Background: Women of childbearing age (WOCBA) may be at high risk for short or poor sleep. Yet few studies have focused on this population. The study objective was to identify individual correlates of sleep duration and quality among WOCBA. Participants: The sample consisted of 9,749 WOCBA aged 18-44 years from the Canadian Community Health Survey 2011-2014. Methods: All variables were self-reported. Sleep duration was dichotomized as insufficient (< 7 hr/night) or adequate (≥ 7 hr/night). A composite score of sleep quality was dichotomized as having sleeping problems none/little or some/most/all the time. Age, ethnicity, level of education, household income, mood disorders, parity, geographical location, fruit and vegetable (FV) intake, physical activity, smoking and alcohol consumption were tested as correlates of sleep duration or quality using hierarchical logistic regression. Results: Ethnicity, parity, geographical location and smoking were correlates of sleep duration; this model discriminated 56.9% of WOCBA. Ethnic minorities, WOCBA with many children, living in urban areas and smoking were associated with lower odds of having adequate sleep duration. Ethnicity, level of education, mood disorders, geographical location, FV intake, and alcohol consumption were correlates of sleep quality; this model discriminated 59.0% of WOCBA. Ethnic minorities, lower level of education, mood disorders, living in urban areas, low FV intake, and alcohol consumption were associated with lower odds of having quality sleep. Conclusions: Some WOCBA may be more at risk for short or poor sleep based on their demographics and health behaviors. This can be used to identify which WOCBA are most in need of sleep interventions.


Assuntos
Inquéritos Epidemiológicos/métodos , Sono/fisiologia , Adolescente , Adulto , Canadá , Feminino , Humanos , Gravidez , Adulto Jovem
5.
J Nutr ; 145(1): 170S-6S, 2015 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-25527676

RESUMO

BACKGROUND: Associations between food patterns and adiposity are poorly understood. OBJECTIVE: Two statistical approaches were used to examine the potential association between egg consumption and adiposity. METHODS: Participants (n = 18,987) aged ≥19 y were from the 2001-2008 NHANES who provided 24-h diet recall data, body mass index (BMI) and waist circumference (WC)-determined adiposity measures, and blood pressure, circulating insulin, glucose, and lipid concentrations were considered cardiovascular risk factors (CVRFs). Covariate-adjusted least-squares means ± SEs were generated. RESULTS: The first statistical approach categorized participants into egg consumers or nonconsumers. Consumers had higher mean BMI (in kg/m(2); 28.7 ± 0.19; P = 0.006) and WC (98.2 ± 0.43 cm; P = 0.002) than did nonconsumers (28.2 ± 0.10 and 96.9 ± 0.23 cm, respectively). Second, cluster analysis identified 8 distinct egg consumption patterns (explaining 39.5% of the variance in percentage of energy within the food categories). Only 2 egg patterns [egg/meat, poultry, fish (MPF)/grains/vegetables and egg/MPF/grains], consumed by ≤2% of the population, drove the association (compared with the no-egg pattern) between egg consumption and BMI and WC. Another analysis controlled for the standard covariates and the other food groups consumed with eggs in those 2 egg patterns. Only the egg/MPF/other-grains pattern remained associated with BMI and WC (both P ≤ 0.0063). The pattern analyses identified associations between an egg pattern (egg/MPF/other grains/potatoes/other beverages) and diastolic blood pressure (DBP) and serum LDL cholesterol (both P ≤ 0.0063). A final analysis was conducted by adding percentage of energy from fast foods and medication use for diabetes to the covariates. The association between the egg/MPF/grains pattern and BMI and the egg/MPF/potatoes/other beverages and DBP and LDL cholesterol disappeared. CONCLUSIONS: Care needs to be taken with data interpretation of diet and health risk factors and the choice of statistical analyses and covariates used in the analyses because these studies are typically used to generate hypotheses. Additional studies are needed to better understand these relations.


Assuntos
Adiposidade , Doenças Cardiovasculares , Interpretação Estatística de Dados , Dieta , Ovos , Adulto , Animais , Pressão Sanguínea , Índice de Massa Corporal , LDL-Colesterol/sangue , Grão Comestível , Etnicidade , Comportamento Alimentar , Feminino , Peixes , Humanos , Masculino , Carne , Inquéritos Nutricionais , Aves Domésticas , Fatores de Risco , Circunferência da Cintura , Adulto Jovem
6.
Br J Nutr ; 113 Suppl: S55-71, 2015 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-25588385

RESUMO

Against the background of rising rates of obesity in children and adults in the USA, and modest effect sizes for obesity interventions, the aim of the present narrative review paper is to extend the UNICEF care model to focus on childhood obesity and its associated risks with an emphasis on the emotional climate of the parent-child relationship within the family. Specifically, we extended the UNICEF model by applying the systems approach to childhood obesity and by combining previously unintegrated sets of literature across multiple disciplines including developmental psychology, clinical psychology and nutrition. Specifically, we modified the extended care model by explicitly integrating new linkages (i.e. parental feeding styles, stress, depression and mother's own eating behaviour) that have been found to be associated with the development of children's eating behaviours and risk of childhood obesity. These new linkages are based on studies that were not incorporated into the original UNICEF model, but suggest important implications for childhood obesity. In all, this narrative review offers important advancements to the scientific understanding of familial influences on children's eating behaviours and childhood obesity.


Assuntos
Depressão/fisiopatologia , Métodos de Alimentação/psicologia , Comportamento Materno/psicologia , Modelos Biológicos , Obesidade Infantil/etiologia , Estresse Fisiológico , Estresse Psicológico/fisiopatologia , Adolescente , Adulto , Criança , Fenômenos Fisiológicos da Nutrição Infantil , Pré-Escolar , Depressão/psicologia , Dieta/efeitos adversos , Comportamento Alimentar/psicologia , Métodos de Alimentação/efeitos adversos , Feminino , Saúde Global , Transição Epidemiológica , Humanos , Lactente , Masculino , Relações Mãe-Filho , Obesidade Infantil/prevenção & controle , Obesidade Infantil/psicologia , Estresse Psicológico/psicologia
7.
Nutr J ; 14: 64, 2015 Jun 28.
Artigo em Inglês | MEDLINE | ID: mdl-26123047

RESUMO

INTRODUCTION: Previous research has shown inconsistencies in the association of tree nut consumption with risk factors for cardiovascular disease (CVD) and metabolic syndrome (MetS). OBJECTIVE: To determine the association of tree nut consumption with risk factors for CVD and for MetS in adults. METHODS: NHANES 2005-2010 data were used to examine the associations of tree nut consumption with health risks in adults 19+ years (n = 14,386; 51% males). Tree nuts were: almonds, Brazil nuts, cashews, filberts [hazelnuts], macadamias, pecans, pine nuts, pistachios, and walnuts. Group definitions were non-consumers < » ounce/day and consumers of ≥ » ounce/day tree nuts using data from 24-h dietary recalls. Means and ANOVA (covariate adjusted) were determined using appropriate sample weights. Using logistic regression, odds ratios of being overweight (OW)/obese (OB) (body mass index [BMI] >25/<30 and ≥30, respectively) and having CVRF or MetS, were determined. RESULTS: Tree nut consumption was associated with lower BMI (p = 0.004), waist circumference (WC) (p = 0.008), systolic blood pressure (BP) (p = 0.001), Homeostatic Model Assessment-Insulin Resistance (p = 0.043), and higher high density lipoprotein-cholesterol (p = 0.022), compared with no consumption, and a lower likelihood of OB (-25%), OW/OB (-23%), and elevated WC (-21%). CONCLUSIONS: Tree nut consumption was associated with better weight status and some CVRF and MetS components.


Assuntos
Adiposidade , Doenças Cardiovasculares/prevenção & controle , Síndrome Metabólica/prevenção & controle , Nozes , Pressão Sanguínea , Índice de Massa Corporal , Peso Corporal , HDL-Colesterol/sangue , LDL-Colesterol/sangue , Dieta , Feminino , Humanos , Modelos Logísticos , Masculino , Rememoração Mental , Pessoa de Meia-Idade , Atividade Motora , Avaliação Nutricional , Inquéritos Nutricionais , Fatores de Risco , Fatores Socioeconômicos , Triglicerídeos/sangue , Estados Unidos
8.
Nutr J ; 14: 48, 2015 May 14.
Artigo em Inglês | MEDLINE | ID: mdl-25971247

RESUMO

BACKGROUND: Most children do not meet the recommendation for fruit consumption. Apples are the second most commonly consumed fruit in the US; however, no studies have examined the association of total apple products, apples, apple sauce, and 100 % apple juice consumption on diet quality and weight/adiposity in children. METHODS: The purpose of this study was to examine the association between various apple consumption forms with diet quality and weight/adiposity in a nationally representative sample of children. Participants were children 2-18 years of age (N = 13,339) from the National Health and Nutrition Examination Survey 2003-2010. Intake was determined using a single interview administered 24-h diet recall. Apple product consumption was determined using the cycle-appropriate USDA Food and Nutrient Database for Dietary Studies food codes. Total diet quality and component scores were determined using the Healthy Eating Index-2010 (HEI). Anthropometrics were determined using standard methods. Covariate adjusted linear and logistic regressions were used to compare apple product consumers with non-consumers; sample weights were used. Probability was set at <0.01. RESULTS: Approximately 26 % of the population (n = 3,482) consumed some form of apple products. Consumers of apple products, whole apples, apple sauce, and 100 % apple juice had higher HEI scores than non-consumers: 50.4 ± 0.4 v 41.9 ± 0.3, 52.5 ± 0.5 v 42.7 ± 0.3, 52.1 ± 0.8 v 47.2 ± 0.4, and 51.4 ± 0.6 v 46.5 ± 0.4, respectively. Apple products and whole apple consumers had lower BMI z-scores than non-consumers: 0.4 ± 0.04 v 0.5 ± 0.03 and 0.3 ± 0.1 v 0.5 ± 0.02, respectively. Apple products and whole apple consumers were 25 % (0.59-0.95 99(th) CI) and 30 % (0.52-0.95 99(th) CI), respectively, were less likely to be obese than non-consumers. CONCLUSIONS: Consumption of any form of apples contributed to the fruit recommendation of children and improved diet quality. Apples should be included in the diets of children as a component of an overall healthy diet.


Assuntos
Saúde da Criança , Dietoterapia/métodos , Qualidade dos Alimentos , Malus , Estado Nutricional , Obesidade/prevenção & controle , Adolescente , Criança , Pré-Escolar , Comportamento Alimentar , Feminino , Humanos , Masculino , Inquéritos Nutricionais/métodos , Inquéritos Nutricionais/estatística & dados numéricos , Obesidade/tratamento farmacológico
9.
Appetite ; 92: 337-42, 2015 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-26050915

RESUMO

PURPOSE: Depression and other stressors have been associated with general parenting and child outcomes in low-income families. Given that parents shape child eating behaviors through their feeding interactions with their child, it is important to investigate factors that may influence parental feeding of young children. The aim of this study was to examine how depressive symptoms and parenting stress might influence the nature of parent feeding styles in low-income families. METHODS: Questionnaires were completed by 290 African-American and Hispanic parents residing in a large urban city in the southwestern United States. Twenty-six percent of the parents reported depressive symptoms above the clinical cutoff. Multivariate logistic regression was used to examine how depressive symptoms and parenting stress might influence the nature of parent feeding styles. RESULTS: After adjusting for potential confounding variables (e.g., ethnicity, education, age), parents with an uninvolved feeding style reported less positive affect and more parenting stress than parents showing the other three feeding styles - authoritative, authoritarian, and indulgent. CONCLUSIONS: Because feeding styles tend to be associated with child obesity in low income samples, the results of this study provide important information regarding the parent-child eating dynamic that may promote less optimal child eating behaviors and the development of childhood obesity. This information could be useful for prevention studies aimed at changing parent behaviors that negatively impact the socialization of child eating behaviors.


Assuntos
Fenômenos Fisiológicos da Nutrição Infantil , Depressão/etiologia , Dieta/efeitos adversos , Métodos de Alimentação , Poder Familiar/psicologia , Obesidade Infantil/etiologia , Estresse Psicológico/fisiopatologia , Adulto , Negro ou Afro-Americano , Índice de Massa Corporal , Fenômenos Fisiológicos da Nutrição Infantil/etnologia , Pré-Escolar , Estudos Transversais , Depressão/epidemiologia , Depressão/etnologia , Dieta/etnologia , Intervenção Educacional Precoce , Feminino , Hispânico ou Latino , Humanos , Masculino , Poder Familiar/etnologia , Pais , Obesidade Infantil/epidemiologia , Obesidade Infantil/etnologia , Pobreza , Prevalência , Fatores de Risco , Autorrelato , Sudoeste dos Estados Unidos/epidemiologia , Estresse Psicológico/epidemiologia , Estresse Psicológico/etnologia , Saúde da População Urbana/etnologia
10.
Public Health Nutr ; 17(12): 2626-36, 2014 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-25166614

RESUMO

The term 'nutrient density' for foods/beverages has been used loosely to promote the Dietary Guidelines for Americans. The 2010 Dietary Guidelines for Americans defined 'all vegetables, fruits, whole grains, fat-free or low-fat milk and milk products, seafood, lean meats and poultry, eggs, beans and peas (legumes), and nuts and seeds that are prepared without added solid fats, added sugars, and sodium' as nutrient dense. The 2010 Dietary Guidelines for Americans further states that nutrient-dense foods and beverages provide vitamins, minerals and other substances that may have positive health effects with relatively few (kilo)calories or kilojoules. Finally, the definition states nutrients and other beneficial substances have not been 'diluted' by the addition of energy from added solid fats, added sugars or by the solid fats naturally present in the food. However, the Dietary Guidelines Advisory Committee and other scientists have failed to clearly define 'nutrient density' or to provide criteria or indices that specify cut-offs for foods that are nutrient dense. Today, 'nutrient density' is a ubiquitous term used in the scientific literature, policy documents, marketing strategies and consumer messaging. However, the term remains ambiguous without a definitive or universal definition. Classifying or ranking foods according to their nutritional content is known as nutrient profiling. The goal of the present commentary is to address the research gaps that still exist before there can be a consensus on how best to define nutrient density, highlight the situation in the USA and relate this to wider, international efforts in nutrient profiling.


Assuntos
Dieta , Alimentos , Comportamentos Relacionados com a Saúde , Valor Nutritivo , Guias como Assunto , Necessidades e Demandas de Serviços de Saúde , Humanos
11.
BMC Public Health ; 14: 388, 2014 Apr 23.
Artigo em Inglês | MEDLINE | ID: mdl-24754905

RESUMO

BACKGROUND: The relationship of snacking patterns on nutrient intake and cardiovascular risk factors (CVRF) in adults is unknown. The aim of this study was to examine the associations of snacking patterns with nutrient intake, diet quality, and a selection of CVRF in adults participating in the 2001-2008 National Health and Nutrition Examination Survey. METHODS: 24-hour dietary recalls were used to determine intake and cluster analysis was used to identify the snacking patterns. Height and weight were obtained and the health indices that were evaluated included diastolic and systolic blood pressure, high density lipoprotein-cholesterol, low density lipoprotein cholesterol, triacylglycerides, blood glucose, and insulin. RESULTS: The sample was participants (n = 18,988) 19+ years (50% males; 11% African-Americans; 72% white, 12% Hispanic-Americans, and 5% other). Cluster analyses generated 12 distinct snacking patterns, explaining 61% of the variance in snacking. Comparisons of snacking patterns were made to the no snack pattern. It was found that miscellaneous snacks constituted the most common snacking pattern (17%) followed by cakes/cookies/pastries (12%) and sweets (9%). Most snacking patterns were associated with higher energy intakes. Snacking patterns cakes/cookies/pastries, vegetables/legumes, crackers/salty snacks, other grains and whole fruit were associated with lower intakes of saturated fatty acids. Added sugars intakes were higher in the cakes/cookies/pastries, sweets, milk desserts, and soft drinks patterns. Five snack patterns (cakes/cookies/pastries, sweets, vegetable/legumes, milk desserts, soft drinks) were associated with lower sodium intakes. Several snack patterns were associated with higher intakes of potassium, calcium, fiber, vitamin A, and magnesium. Five snacking patterns (miscellaneous snacks; vegetables/legumes; crackers/salty snacks; other grains; and whole fruit) were associated with better diet quality scores. Alcohol was associated with a lower body mass index and milk desserts were associated with a lower waist circumference. No snack patterns were associated with other CVRF studied. CONCLUSIONS: Overall, several snacking patterns were associated with better diet quality than those consuming no snacks. Yet, the majority of the snacking patterns were not associated with CVRF. Education is needed to improve snacking patterns in terms of nutrients to limit in the diet along with more nutrient-dense foods to be included in snacks.


Assuntos
Doenças Cardiovasculares/etiologia , Comportamento Alimentar , Lanches , Adulto , Análise por Conglomerados , Inquéritos sobre Dietas , Ingestão de Energia/fisiologia , Feminino , Humanos , Funções Verossimilhança , Lipídeos/sangue , Masculino , Pessoa de Meia-Idade , Sobrepeso , Fatores de Risco , Estados Unidos
12.
AIDS Behav ; 17(5): 1683-7, 2013 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-23377704

RESUMO

Determine the relationship between food insecurity and CD4 counts and viral suppression among pediatric HIV-positive patients. Food insecurity was assessed by validated survey. CD4 counts and viral load were abstracted from patients' charts. We used linear regression for the dependent variable of the natural log of CD4 counts and logistic regression for viral suppression, with backward deletion of covariates with p > 0.1. Food insecurity (ß = -0.23, 95 % CI [-0.40, -0.01]) was associated with lower CD4 counts and higher odds of incomplete viral suppression (OR = 4.07, 95 % CI [1.02, 13.92]). Food insecurity may adversely impact pediatric HIV outcomes.


Assuntos
Contagem de Linfócito CD4 , Abastecimento de Alimentos , Infecções por HIV/terapia , Carga Viral , Adolescente , Contagem de Linfócito CD4/estatística & dados numéricos , Criança , Estudos Transversais , Inquéritos sobre Dietas , Feminino , Abastecimento de Alimentos/estatística & dados numéricos , Infecções por HIV/epidemiologia , Hospitais Pediátricos/estatística & dados numéricos , Humanos , Modelos Lineares , Modelos Logísticos , Masculino , Projetos Piloto , Texas/epidemiologia , Carga Viral/estatística & dados numéricos
13.
Public Health Nutr ; 16(11): 2073-82, 2013 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-23031568

RESUMO

OBJECTIVE: To examine the association between breakfast skipping and type of breakfast consumed with overweight/obesity, abdominal obesity, other cardiometabolic risk factors and the metabolic syndrome (MetS). DESIGN: Cross-sectional. Three breakfast groups were identified, breakfast skippers (BS), ready-to-eat-cereal (RTEC) consumers and other breakfast (OB) consumers, using a 24 h dietary recall. Risk factors were compared between the breakfast groups using covariate-adjusted statistical procedures. SETTING: The 1999­2006 National Health and Nutrition Examination Survey, USA. SUBJECTS: Young adults (20­39 years of age). RESULTS: Among these young adults (n 5316), 23.8% were BS, 16.5% were RTEC consumers and 59.7% were OB consumers. Relative to the BS, the RTEC consumers were 31%, 39%, 37%, 28%, 23%, 40% and 42% less likely to be overweight/obese or have abdominal obesity, elevated blood pressure, elevated serum total cholesterol, elevated serum LDL-cholesterol, reduced serum HDL-cholesterol or elevated serum insulin, respectively. Relative to the OB consumers, the BS were 1.24, 1.26 and 1.44 times more likely to have elevated serum total cholesterol, elevated serum LDL-cholesterol or reduced serum HDL-cholesterol, respectively. Relative to the OB consumers, the RTEC consumers were 22%, 31% and 24% less likely to be overweight/ obese or have abdominal obesity or elevated blood pressure, respectively. No difference was seen in the prevalence of the MetS by breakfast skipping or type of breakfast consumed. CONCLUSIONS: Results suggest that consumption of breakfast, especially that included an RTEC, was associated with an improved cardiometabolic risk profile in U.S. young adults. Additional studies are needed to determine the nature of these relationships.


Assuntos
Desjejum , Doenças Cardiovasculares/etiologia , Dieta , Grão Comestível , Comportamento Alimentar , Síndrome Metabólica/etiologia , Obesidade/etiologia , Adulto , Pressão Sanguínea , Doenças Cardiovasculares/sangue , Colesterol/sangue , HDL-Colesterol/sangue , LDL-Colesterol/sangue , Estudos Transversais , Registros de Dieta , Fast Foods , Feminino , Humanos , Hipertensão/etiologia , Insulina/sangue , Masculino , Rememoração Mental , Síndrome Metabólica/sangue , Inquéritos Nutricionais , Obesidade Abdominal/etiologia , Sobrepeso , Fatores de Risco , Adulto Jovem
14.
Public Health Nutr ; 16(12): 2169-77, 2013 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-23701867

RESUMO

OBJECTIVE: To examine the variability of food portions served and consumed by African-American and Hispanic-American pre-school children attending Head Start. DESIGN: Cross-sectional. SETTING: Food consumption by pre-schoolers (n 796) enrolled in sixteen Head Start centres in Houston, Texas (51 % boys, 42 % African-American, mean age 4 years) were assessed during 3 d of lunch meals using digital photography. Descriptive statistics and multilevel regression models, adjusting for classroom and school clustering effects, were determined. SUBJECTS: Head Start pre-schoolers aged 3­5 years. RESULTS: Mean amount served was 2428 kJ (580 kcal) and 572 g. Mean intake was 1421 kJ (339 kcal) and 331 g: 20 % protein, 46 % carbohydrate and 34 % fat. Plate waste was 43 % (range: 38 % (fruit) to 61 % (vegetables)). Mean CV of food served was 29 %: 33 % for entrées, 44 % for vegetables, 60 % for fruit and 76 % for starches. Mean CV of food consumed was 46 %: 58 % for entrées, 86 % for fruit, 96 % for vegetables and 111 % for starches. Total gram amount of food served was positively correlated with consumption (r = 0·43, P < 0·001). CONCLUSIONS: Plate waste and variation in amounts served and consumed were substantial; amounts served were associated with amounts consumed. Large portion sizes may contribute to paediatric obesity by promoting excessive intake at meals. Understanding factors influencing portion sizes provides insight about specific intervention strategies that can be used in obesity prevention programmes.


Assuntos
Ingestão de Energia , Serviços de Alimentação , Almoço , Obesidade Infantil/etiologia , Tamanho da Porção , Instituições Acadêmicas , Negro ou Afro-Americano , Pré-Escolar , Estudos Transversais , Feminino , Programas Governamentais , Hispânico ou Latino , Humanos , Masculino , Texas
15.
Nat Metab ; 5(4): 579-588, 2023 04.
Artigo em Inglês | MEDLINE | ID: mdl-37100994

RESUMO

Obesity is caused by a prolonged positive energy balance1,2. Whether reduced energy expenditure stemming from reduced activity levels contributes is debated3,4. Here we show that in both sexes, total energy expenditure (TEE) adjusted for body composition and age declined since the late 1980s, while adjusted activity energy expenditure increased over time. We use the International Atomic Energy Agency Doubly Labelled Water database on energy expenditure of adults in the United States and Europe (n = 4,799) to explore patterns in total (TEE: n = 4,799), basal (BEE: n = 1,432) and physical activity energy expenditure (n = 1,432) over time. In males, adjusted BEE decreased significantly, but in females this did not reach significance. A larger dataset of basal metabolic rate (equivalent to BEE) measurements of 9,912 adults across 163 studies spanning 100 years replicates the decline in BEE in both sexes. We conclude that increasing obesity in the United States/Europe has probably not been fuelled by reduced physical activity leading to lowered TEE. We identify here a decline in adjusted BEE as a previously unrecognized factor.


Assuntos
Exercício Físico , Gastos em Saúde , Masculino , Feminino , Estados Unidos , Humanos , Metabolismo Basal , Metabolismo Energético , Obesidade/metabolismo
16.
J Nutr ; 142(12): 2112-8, 2012 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-23077187

RESUMO

The goal of the study was to determine if there was an association between diet quality and cardiovascular risk factors (CVRF) in adults. NHANES 2001-2008 data were used to compare diet quality, as determined by using 2005 Healthy Eating Index (HEI-2005) scores, and CVRF in adults aged ≥19 y (n = 18,988; 51% men, 50% white, 21% African American, 25% Hispanic American, 4% other). HEI-2005 scores were calculated by using one 24-h dietary recall collected from the participants. Weight and adiposity, blood pressure, and CVRF were measured. Regression analyses were conducted to assess the linear relationship of CVRF and HEI-2005 scores by using appropriate covariates accounting for sample weights and the complex sample design of NHANES. OR were calculated for HEI quartiles and CVRF. BMI (P < 0.0001), waist circumference (WC) (P < 0.0001), diastolic blood pressure (P = 0.0002), C-reactive protein (P = 0.0016), total cholesterol (P = 0.0006), LDL cholesterol (P = 0.0039), and metabolic syndrome (P = 0.0035) were inversely associated with HEI-2005. HDL cholesterol significantly (P = 0.0048) increased across HEI-2005 quartiles. Compared with the lowest HEI-2005 quartile, individuals with the highest diet quality (HEI-2005 quartile 4) were less likely to be overweight or obese (34%) or have elevated WC (35%), elevated blood pressure (26%), metabolic syndrome (35%), and decreased HDL-cholesterol concentrations (21%). Data suggest that diet quality is inversely associated with several CVRF.


Assuntos
Doenças Cardiovasculares/etiologia , Inquéritos sobre Dietas , Dieta , Inquéritos Epidemiológicos , Adulto , Índice de Massa Corporal , Proteína C-Reativa/análise , Doenças Cardiovasculares/sangue , Doenças Cardiovasculares/metabolismo , Colesterol/sangue , Estudos Transversais , Feminino , Humanos , Masculino , Fatores de Risco
17.
J Nutr ; 142(7): 1390S-401S, 2012 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-22649260

RESUMO

Current fiber intakes are alarmingly low, with long-term implications for public health related to risk of coronary heart disease, stroke, hypertension, certain gastrointestinal disorders, obesity, and the continuum of metabolic dysfunctions including prediabetes and type 2 diabetes. Eating patterns high in certain fibers are known to lower LDL cholesterol and blood pressure, lower blood glucose, and decrease insulin resistance in people with prediabetes and type 2 diabetes; help with both weight loss and maintenance; and improve bowel regularity and gastrointestinal health. With >90% of adults and children who fall short of meeting their daily fiber recommendations, the 2010 Dietary Guidelines for Americans once again classified fiber as a nutrient of concern. Despite efforts over the past decade to promote adequate fiber through fruit, vegetable, and whole-grain intakes, fiber consumption has remained flat at approximately half the daily recommended amount. The public health implications of inadequate fiber intake prompted the roundtable session "Filling America's Fiber Gap: Probing Realistic Solutions," which assembled nutrition researchers, educators, and communicators to identify challenges, opportunities, and realistic solutions to help fill the current fiber gap. The roundtable discussions highlighted the need for both consumer and professional education to improve acceptance for and inclusion of grain-based foods with added fiber as one strategy for increasing fiber intakes within daily energy goals.


Assuntos
Dieta , Fibras na Dieta/administração & dosagem , Grão Comestível , Ingestão de Energia , Comportamentos Relacionados com a Saúde , Promoção da Saúde , Saúde Pública , Doenças Cardiovasculares/prevenção & controle , Fibras na Dieta/uso terapêutico , Educação Profissionalizante , Alimentos Fortificados , Educação em Saúde , Humanos , Doenças Metabólicas/prevenção & controle , Política Nutricional , Obesidade/prevenção & controle
18.
Nutr J ; 11: 107, 2012 Dec 12.
Artigo em Inglês | MEDLINE | ID: mdl-23234248

RESUMO

BACKGROUND: Consumption of 100% orange juice (OJ) has been positively associated with nutrient adequacy and diet quality, with no increased risk of overweight/obesity in children; however, no one has examined these factors in adults. The purpose of this study was to examine the association of 100% OJ consumption with nutrient adequacy, diet quality, and risk factors for metabolic syndrome (MetS) in a nationally representative sample of adults. METHODS: Data from adults 19+ years of age (n = 8,861) participating in the National Health and Nutrition Examination Survey 2003-2006 were used. The National Cancer Institute method was used to estimate the usual intake (UI) of 100% OJ consumption, selected nutrients, and food groups. Percentages of the population below the Estimated Average Requirement (EAR) or above the Adequate Intake (AI) were determined. Diet quality was measured by the Healthy Eating Index-2005 (HEI-2005). Covariate adjusted logistic regression was used to determine if consumers had a lower odds ratio of being overweight or obese or having risk factors of MetS or MetS. RESULTS: Usual per capita intake of 100% OJ was 50.3 ml/d. Among consumers (n = 2,310; 23.8%), UI was 210.0 ml/d. Compared to non-consumers, consumers had a higher (p < 0.05) percentage (% ± SE) of the population meeting the EAR for vitamin A (39.7 ± 2.5 vs 54.0 ± 1.2), vitamin C (0.0 ± 0.0 vs 59.0 ± 1.4), folate (5.8 ± 0.7 vs 15.1 ± 0.9), and magnesium (51.6 ± 1.6 vs 63.7 ± 1.2). Consumers were also more likely to be above the AI for potassium (4.1 ± 0.8 vs 1.8 ± 0.2). HEI-2005 was significantly (p < 0.05) higher in consumers (55.0 ± 0.4 vs 49.7 ± 0.3). Consumers also had higher intakes of total fruit, fruit juice, whole fruit, and whole grain. Consumers had a lower (p < 0.05) mean body mass index (27.6 ± 0.2 vs 28.5 ± 0.1), total cholesterol levels (197.6 ± 1.2 vs 200.8 ± 0.75 mg/dL), and low density lipoprotein-cholesterol levels (112.5 ± 1.4 vs 116.7 ± 0.93 mg/dL). Finally, compared to non-consumers of 100% OJ, consumers were 21% less likely to be obese and male consumers were 36% less likely to have MetS. CONCLUSION: The results suggest that moderate consumption of 100% OJ should be encouraged to help individuals meet the USDA daily recommendation for fruit intake and as a component of a healthy diet.


Assuntos
Bebidas , Biomarcadores/sangue , Citrus sinensis , Dieta , Inquéritos Nutricionais , Obesidade/prevenção & controle , Adulto , Ácido Ascórbico/administração & dosagem , Índice de Massa Corporal , Doenças Cardiovasculares/prevenção & controle , Colesterol/sangue , Grão Comestível/química , Feminino , Ácido Fólico/administração & dosagem , Frutas , Humanos , Magnésio/administração & dosagem , Masculino , Síndrome Metabólica/prevenção & controle , Atividade Motora , Estado Nutricional , Potássio na Dieta/administração & dosagem , Potássio na Dieta/sangue , Análise de Regressão , Fatores de Risco , Fatores Socioeconômicos , Inquéritos e Questionários , Vitamina A/administração & dosagem
19.
Public Health Nutr ; 15(10): 1871-8, 2012 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-22443678

RESUMO

OBJECTIVE: To examine the contribution of 100 % fruit juice (FJ) consumption to dietary adequacy of shortfall nutrients by children and adolescents. DESIGN: Cross-sectional. SETTING: Secondary analysis of data from the 2003-2006 National Health and Nutrition Examination Survey (NHANES). SUBJECTS: Children and adolescents aged 2-18 years (n 7250). Usual intake, determined from two 24 h dietary recalls, was calculated using the National Cancer Institute method. The population was dichotomized into consumers or non-consumers of 100 % FJ. The age/gender-specific percentage of the two consumption groups with intakes less than the Estimated Average Requirement or that exceeded the Adequate Intake for selected nutrients was determined. A Z-statistic for differences in population proportions was used to determine significance (P < 0.05). RESULTS: Children aged 2-5 years had the highest percentage of 100 % FJ consumers (71.1 %), followed by children aged 6-12 years (57.0 %) and adolescents aged 13-18 years (44.5 %). Compared with 100 % FJ consumers, a significantly higher percentage of non-consumers had intakes below the Estimated Average Requirement for vitamin A (24.4 (SE 2.5) % v. 42.2 (SE 2.5) %), vitamin C (0.1 (SE 0.2) % v. 38.9 (SE 4.1) %), folate (8.8 (SE 1.5) % v. 22.1 (SE 2.4) %), P (11.6 (SE 2.1) % v. 21.3 (SE 2.6) %) and Mg (25.8 (SE 1.7) % v. 46.1 (SE 2.0) %). A greater percentage of 100 % FJ consumers exceeded the Adequate Intake for K (2.4 (SE 0.5) v. 0.5 (SE 0.2) %) compared with non-consumers. CONCLUSIONS: Consumption of 100 % FJ is associated with improved nutrient adequacy and can contribute to a healthy diet.


Assuntos
Bebidas/estatística & dados numéricos , Frutas , Política Nutricional , Inquéritos Nutricionais , Necessidades Nutricionais , Adolescente , Distribuição por Idade , Criança , Fenômenos Fisiológicos da Nutrição Infantil/fisiologia , Pré-Escolar , Estudos Transversais , Feminino , Humanos , Masculino , Micronutrientes/administração & dosagem , Estado Nutricional , Valor Nutritivo , Estados Unidos
20.
Appetite ; 59(2): 316-23, 2012 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-22634195

RESUMO

The objective of this study was to determine the correlation between intake of snacks, sweets, fruit, vegetables, and energy in low-income mother-child dyads. This was a secondary analysis of data collected from Head Start centers in Houston, Texas and Birmingham, Alabama. Twenty four hour dietary recalls for one weekend day were collected from mother (mean 31.8 yrs [range: 20.1-72.4 yrs])-child (mean 4.4 yrs [range 2.8-5.8 yrs]) dyads (N=650). Means±SD were calculated for intake of food categories and energy. Pearson's partial correlation coefficients were used to detect associations between the intakes of the dyads. Main outcome measures were the correlations between the intake of snacks, sweets, fruit, vegetables, and energy in the mother-child dyads. Partial correlations showed that children's intake of snacks, sweets, fruit, vegetables, and energy were all correlated with the mother's intake of these foods/energy (all p<0.001). Children's intake of fruit was correlated with the mother's intake of vegetables (p<0.001); children's energy intake was correlated with mother's intake of sweets, fruit, and vegetables (all p<0.001). It is important that food and nutrition professionals provide the guidance needed that encourages intake of nutrient-dense snacks and fruit and vegetables in mothers so they can model healthier food consumption behaviors for their children.


Assuntos
Ingestão de Energia , Comportamento Alimentar , Relações Mãe-Filho , Pobreza , Adulto , Idoso , Alabama , Antropometria , Pré-Escolar , Estudos Transversais , Dieta , Etnicidade , Feminino , Frutas , Humanos , Masculino , Pessoa de Meia-Idade , Estado Nutricional , Lanches , Texas , Verduras , Adulto Jovem
SELEÇÃO DE REFERÊNCIAS
Detalhe da pesquisa