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1.
Appetite ; 181: 106387, 2023 02 01.
Artigo em Inglês | MEDLINE | ID: mdl-36427564

RESUMO

In order to increase vegetable intake by children, parents are encouraged to implement strategies that promote trying and eating vegetables at mealtimes. Qualitative studies have previously highlighted barriers parents face in implementing healthy eating practices, such as time, monetary costs and child factors (e.g. fussy eaters). This study aimed to specify the relationships between child and parent factors and their effects on parental intentions to implement vegetable feeding strategies at mealtimes. Parental intentions to implement meal service (serving larger portions, offering variety, serving vegetables first) and experiential learning (repeated exposure, games, sensory play) strategies were examined. Parents (N = 302, 73 male, Mage = 33.5) also explained reasons why certain strategies may or may not work for their child (4-7y). For both types of strategy, higher food fussiness of the child predicted higher parental intentions to implement strategies at home. However, this was competitively mediated by low beliefs that the strategy would work for their child, resulting in weaker overall positive effects on intentions. In the meal service model, parental beliefs that healthy eating is important for their child had a positive, indirect effect on higher intentions, through involved parental feeding practices. However, this was not significant in the experiential learning strategies model. Written parental responses suggest that this may be due to meal service approaches being viewed as easier to implement, with little additional effort required. Increasing parental confidence to implement strategies successfully and managing expectations around successful outcomes of strategies (e.g. tasting, eating) may be important focuses of future interventions to support parents implementing vegetable feeding strategies at mealtimes.


Assuntos
Intenção , Verduras , Criança , Masculino , Humanos , Estudos Transversais , Frutas , Pais , Comportamento Alimentar , Inquéritos e Questionários
2.
Appetite ; 169: 105803, 2022 02 01.
Artigo em Inglês | MEDLINE | ID: mdl-34774967

RESUMO

Associative learning predicts that children expect to eat vegetables together with foods high in carbohydrate and protein at mealtimes. However, choosing to eat and consume vegetables may be less likely if they are presented alongside more palatable, competing foods. This study examined food choices of children (N = 180, 8-11 years, 84 female) in a mealtime context. During an online task, children chose one food for a meal, from a choice of vegetables and either a food high in carbohydrate or protein. Preference was assessed with and without a partial meal stimulus, to test the effect of other foods on the plate. Vegetables were selected more often with a meal stimulus, especially when it consisted of carbohydrate and protein foods, meaning that the vegetable option added nutritional variety to the meal. This effect was moderated by the difference in liking between the food options available. Vegetables were selected more if they were better liked than the competing food option, although it was not necessary that vegetables were better liked if they added nutritional variety to the meal. Food fussy children were less likely to select vegetables, but no other effects of child appetitive traits or parental practices were found on children's food choices. Children may be more likely to select vegetables if they add nutritional variety to a meal and are similarly or better liked than competing food options. Future research could test specific meal configurations which promote children's selection and intake of vegetables at mealtimes.


Assuntos
Comportamento Alimentar , Verduras , Criança , Feminino , Preferências Alimentares , Humanos , Refeições , Pais
3.
Physiol Behav ; 238: 113493, 2021 09 01.
Artigo em Inglês | MEDLINE | ID: mdl-34116053

RESUMO

Children eat too few vegetables and this is attributed to disliked flavours and texture as well as low energy density. Vegetables confer selective health benefits over other foods and so children are encouraged to eat them. Parents and caregivers face a challenge in incorporating vegetables into their child's habitual diet. However, liking and intake may be increased through different forms of learning. Children learn about vegetables across development from exposure to some vegetable flavours in utero, through breastmilk, complementary feeding and transitioning to family diets. Infants aged between 5 and 7 m are most amenable to accepting vegetables. However, a range of biological, social, environmental and individual factors may act independently and in tandem to reduce the appeal of eating vegetables. By applying aspects of learning theory, including social learning, liking and intake of vegetables can be increased. We propose taking an integrated and individualised approach to child feeding in order to achieve optimal learning in the early years. Simple techniques such as repeated exposure, modelling, social praise and creating social norms for eating vegetables can contribute to positive feeding experiences which in turn, contributes to increased acceptance of vegetables. However, there is a mismatch between experimental studies and the ways that children eat vegetables in real world settings. Therefore, current knowledge of the best strategies to increase vegetable liking and intake gained from experimental studies must be adapted and integrated for application to home and care settings, while responding to individual differences.


Assuntos
Preferências Alimentares , Verduras , Criança , Comportamento Infantil , Pré-Escolar , Dieta , Comportamento Alimentar , Humanos , Lactente
4.
J Autism Dev Disord ; 49(9): 3504-3525, 2019 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-31124025

RESUMO

People with developmental disorders (DD) often display high levels of selective eating, which can result in micronutrient deficiencies. It is therefore essential to explore ways to increase dietary variety in this population. To identify different types of interventions promoting increased acceptance of new foods or dietary variety for DD populations and to determine their effectiveness. Thirty-six studies met criteria for inclusion in the review. Twenty-two types of intervention were identified with 34 studies being reported as effective and 33 of these incorporating components drawn from learning theory. Multi-component interventions centred on operant conditioning, systematic desensitisation and changes to environment and familial practices were reported as effective for individuals.


Assuntos
Deficiências do Desenvolvimento/reabilitação , Preferências Alimentares , Adulto , Criança , Condicionamento Operante , Deficiências do Desenvolvimento/psicologia , Dieta , Humanos , Masculino , Psicoterapia/métodos
5.
Appetite ; 137: 47-61, 2019 06 01.
Artigo em Inglês | MEDLINE | ID: mdl-30779929

RESUMO

Visual cues such as plate size, amount of food served and packaging are known to influence the effects of portion size on food intake. Unit bias is a well characterised heuristic and helps to determine consumption norms. In an obesogenic environment where large portions are common place, the unit or segmentation bias may be overridden promoting overconsumption of both amorphous or unit foods. The aim of this review was to investigate the impact of offering unit or amorphous food on the portion size effect (PSE) in children aged 2-12 years. A systematic search for literature was conducted in Medline, PsycInfo and Web of Science in February 2018. A total of 1197 papers were retrieved following the searches. Twenty-one papers were included in the systematic review, of which 15 provided requisite statistical information for inclusion in a random effects meta-analysis. Increasing children's food portion size by 51-100% led to a significant increase in intake (SMD = 0.47, 95% CI: 0.39-0.55). There was no evidence to suggest that increases in consumption were related to food type (p = 0.33), child age (p = 0.47) or initial portion size served (p=0.14). Residual heterogeneity was not significant (p=0.24). The PSE was demonstrated in children aged 2-12 years when offered both unit and amorphous food items. The effect was not restricted by food type, child age or influenced by initial portion size served. Of the studies included in the meta-analysis between study heterogeneity was low suggesting minimal variation in treatment effects between studies, however, more research is required to understand the mechanisms of the PSE in preschool children. Future research should determine feasible methods to downsize portion sizes served to children.


Assuntos
Comportamento Alimentar , Alimentos , Tamanho da Porção , Criança , Pré-Escolar , Humanos
6.
J Reprod Infant Psychol ; 37(2): 123-138, 2019 04.
Artigo em Inglês | MEDLINE | ID: mdl-30325661

RESUMO

OBJECTIVES: The study had two main objectives: (a) track changes in self-esteem, eating behaviours and body satisfaction from early pregnancy to 24 months postpartum and (b) to compare changes by context (Israel vs. UK) and maternal body mass index (BMI). BACKGROUND: High maternal BMI is associated with negative body image and restrained eating, which are experienced differently across cultures. METHODS: 156 pregnant women were recruited from Israel and the UK. Seventy-three women were followed up every six months from early postpartum and until 24 months following birth. Women completed questionnaires assessing self-esteem (RSEQ), body image (BIS/BIDQ) and eating behaviours (DEBQ) and self-reported weights and heights so that BMI could be calculated. RESULTS: Women with higher BMI had higher levels of self-esteem and were less satisfied with their body. Healthy-weight women were more likely to lose all of their retained pregnancy weight compared to overweight and obese women. Self-esteem, body image and eating behaviours remained stable from pregnancy until 24 months postpartum. No significant differences were found for any measure by context. CONCLUSION: BMI was the strongest predictor of self-esteem and body dissatisfaction and a higher BMI predicted less weight loss postpartum.


Assuntos
Adaptação Psicológica , Imagem Corporal , Índice de Massa Corporal , Comparação Transcultural , Comportamento Alimentar/etnologia , Gravidez/psicologia , Adulto , Composição Corporal , Feminino , Humanos , Israel , Modelos Lineares , Autoimagem , Inquéritos e Questionários , Reino Unido
7.
Appetite ; 128: 303-310, 2018 09 01.
Artigo em Inglês | MEDLINE | ID: mdl-29879451

RESUMO

Overfeeding in infancy may lead to overweight and obesity in later childhood. Mothers are advised to "tune in" to their infant's hunger, appetite and satiation cues to prevent overfeeding. The present study aimed to 1) assess stability and change in infant hunger and satiety cues (first two years of life) taken at six monthly intervals; 2) track the expression of appetite cues during the course of a meal (beginning, middle and end). Thirty-eight women (mean age 35.3 + 3.7 years) participated in the study. Mothers were within a normal weight range (BMI = 22 + 3.3 kg/m2), most were married (N = 35; 95%) and for most this was not their first child. After an initial investigation (T1) follow-up visits took place every six months with filmed meals involving solid foods. A typical meal contained foods high in protein and carbohydrate plus cooked vegetables. Films were viewed and communication cues (engagement indicating appetite and disengagement indicating satiation) identified and recorded by appearance using the NCAST (Nursing Child Assessment Satellite Training). Coding included the frequency and time at which each cue appeared. Results showed that infants were more likely to communicate potent engagement cues such as babbling, mutual gaze and looking at mother with age. None of the disengagement cues showed any significant main effects of time of follow up. Most, not all, feeding cues were stable across the segment of the feed and did not show a simple linear change across the meal, rather this appeared to develop with age. Raising awareness of these cues with mothers may encourage more responsive and positive mealtime interactions.


Assuntos
Comportamento Alimentar/psicologia , Fome , Comportamento do Lactente/psicologia , Refeições/psicologia , Saciação , Adulto , Sinais (Psicologia) , Feminino , Humanos , Lactente , Recém-Nascido , Masculino , Relações Mãe-Filho , Mães/psicologia
8.
Appetite ; 108: 74-82, 2017 01 01.
Artigo em Inglês | MEDLINE | ID: mdl-27647500

RESUMO

It is known that duration of breastfeeding and responsive feeding are associated with decreased risk of obesity. It is however, not clear whether breastfed infants signal more to mothers to facilitate responsive feeding, compared to formula fed, nor what communication cues are important during the feeding interaction. The present study aimed to explore feeding cues in milk-fed infants and to examine if such cues vary by mode of feeding. Twenty-seven mothers and infants were filmed while breastfeeding or formula feeding. Infants' age ranged from 3 to 22 weeks. Feeding cues were identified using a validated list of communication cues (NCAST). The frequency of each cue during the beginning, middle, and end of the meal was recorded. There were 22 feeding cues identified during the feeds, with significantly more frequent disengagement cues expressed than engagement cues. Significantly more frequent feeding cues were observed at the beginning than at the end of the meal showing that cue frequency changes with satiation. Breastfeeding infants exhibited more engagement and disengagement cues than formula fed infants. Supporting mothers to identify engagement and disengagement cues during a milk feed may promote more responsive feeding-strategies that can be acquired by mothers using different modes of feeding.


Assuntos
Desenvolvimento Infantil , Comportamento Alimentar , Fome , Comportamento do Lactente , Fenômenos Fisiológicos da Nutrição do Lactente , Relações Mãe-Filho , Resposta de Saciedade , Aleitamento Materno/efeitos adversos , Aleitamento Materno/etnologia , Estudos de Coortes , Sinais (Psicologia) , Comportamento Alimentar/etnologia , Feminino , Seguimentos , Humanos , Fome/etnologia , Lactente , Comportamento do Lactente/etnologia , Fórmulas Infantis/efeitos adversos , Fenômenos Fisiológicos da Nutrição do Lactente/etnologia , Israel/epidemiologia , Masculino , Relações Mãe-Filho/etnologia , Obesidade Infantil/epidemiologia , Obesidade Infantil/etnologia , Obesidade Infantil/etiologia , Obesidade Infantil/prevenção & controle , Pesquisa Qualitativa , Risco , Reino Unido/epidemiologia , Gravação em Vídeo
9.
Appetite ; 95: 58-66, 2015 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-26119810

RESUMO

OBJECTIVE: The present study explored how Israeli and UK mothers integrate feeding into their conceptualisations of mothering 2-6 months post-partum. BACKGROUND: The nature and importance of motherhood is subject to differential contextual, cultural, political and historical influences. We set out to compare experiences of motherhood and feeding between these two countries using a qualitative approach. METHODS: Forty one women (mean age 36.4 ± 2.7 years) from Israel and the UK, mostly married or in a committed relationship were interviewed about their experience of pregnancy, motherhood and feeding. Data were analysed thematically. RESULTS: The experience of motherhood in the early postnatal period was dominated, for all mothers, by the experience of breastfeeding and clustered around three representations of mothering, namely; 1) a devoted mother who ignores her own needs; 2) a mother who is available for her infant but acknowledges her needs as well; and 3) a struggling mother for whom motherhood is a burden. Such representations existed within both cultural groups and sometimes coexisted within the same mothers. UK women described more struggles within motherhood whereas a tendency towards idealising motherhood was observed for Israeli women. CONCLUSION: There are similarities in the ways that UK and Israeli women experienced motherhood and feeding. Where family life is strongly emphasized, mothers reported extremes of idealism and burden and associated an "ideal" mother with a breastfeeding mother. Where motherhood is represented as just one of many roles women take up, they are more likely to represent a "good enough" approach to mothering. Understanding the experience of motherhood and feeding in different cultural settings is important to provide the context for postnatal care specifically where mothers are reluctant to share problems or difficulties encountered.


Assuntos
Aleitamento Materno/psicologia , Mães/psicologia , Período Pós-Parto/psicologia , Adaptação Psicológica , Adulto , Feminino , Humanos , Lactente , Israel , Comportamento Materno , Relações Mãe-Filho/psicologia , Gravidez , Pesquisa Qualitativa , Reino Unido
10.
Health Psychol Open ; 2(1): 2055102915579605, 2015 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-28070352

RESUMO

We examined mealtime interactions to assess whether they varied according to maternal body mass index, country and mode of feeding in 41 Israeli and UK mother-infant dyads. Feeding behaviours were coded using the Simple Feeding Element Scale. Significantly, more UK mothers breastfed during the filmed meal compared to Israeli mothers. Mealtime interactions did not vary according to maternal body mass index or country. Women who breastfed (as opposed to those who bottle fed or fed solids) provided fewer distractions during the meal, a more ideal feeding environment and fed more responsively.

11.
Appetite ; 88: 1-4, 2015 May.
Artigo em Inglês | MEDLINE | ID: mdl-25463048

RESUMO

Establishing eating habits in early life that include appropriate portion sizes of foods which are nutrient dense and low in energy density is considered important in the prevention of obesity in children. This special supplement presents the proceedings of a symposium focusing on advances in scientific understanding of the development of healthy food portion sizes in children and their families. Recent basic research highlights individual differences in children's responsiveness to portion size as well as potential mechanisms of portion size effects. Quantitative approaches highlight the influence of maternal serving in determining intake, while qualitative approaches seek to elaborate caregiver decisions around child portion sizes at meals and snacks. Family-based environmental interventions for child weight control involving food portion size are outlined. An overview of the overarching issues and roundtable discussion on the forefronts of portion size research are presented as well as policy considerations to promote healthy portion control.


Assuntos
Congressos como Assunto , Tamanho da Porção , Humanos , Obesidade Infantil/prevenção & controle
12.
Appetite ; 71: 321-31, 2013 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-24045210

RESUMO

Complementary feeding (CF) practices vary within and across cultures but have been investigated only to a very limited extent. It is however important to understand CF practices and how they differ, as CF sets the foundation for children's later food choices. The present study was set out to examine practices, attitudes and experiences of CF including the introduction of vegetables amongst French mothers (n=18, 25-39 years). Thematic analysis of transcribed focus groups and interviews revealed the perceived importance of the weaning period, as a critical milestone for infants' development but with a sense of "now or never" for introducing new tastes including vegetables. Flavour exposure and taste discovery during weaning were identified as the beginning of a "taste journey", in which educating the palate with a variety of different foods was considered important for children's later eating habits. Weaning was described as emotional and complex, a transition period in which the baby makes progress away from milk towards the family diet and which goes beyond mere nutrition. Advice was sought from official sources, but adapted to the needs of infants. In agreement with earlier observations of French adults, pleasure and taste development were considered of primary importance. In particular, French mothers believed complementary feeding lay the foundations of taste early in life.


Assuntos
Comportamento Alimentar/psicologia , Fenômenos Fisiológicos da Nutrição do Lactente , Paladar , Desmame , Adulto , Pré-Escolar , Dieta , Feminino , Grupos Focais , Preferências Alimentares/psicologia , França , Conhecimentos, Atitudes e Prática em Saúde , Humanos , Lactente , Masculino , Mães/psicologia , Fatores Socioeconômicos , Inquéritos e Questionários , Verduras , População Branca
13.
Nutr Res Rev ; 26(1): 22-38, 2013 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-23680169

RESUMO

Foods and dietary patterns that enhance satiety may provide benefit to consumers. The aim of the present review was to describe, consider and evaluate research on potential benefits of enhanced satiety. The proposal that enhanced satiety could only benefit consumers by a direct effect on food intake should be rejected. Instead, it is proposed that there is a variety of routes through which enhanced satiety could (indirectly) benefit dietary control or weight-management goals. The review highlights specific potential benefits of satiety, including: providing appetite control strategies for consumers generally and for those who are highly responsive to food cues; offering pleasure and satisfaction associated with low-energy/healthier versions of foods without feeling 'deprived'; reducing dysphoric mood associated with hunger especially during energy restriction; and improved compliance with healthy eating or weight-management efforts. There is convincing evidence of short-term satiety benefits, but only probable evidence for longer-term benefits to hunger management, possible evidence of benefits to mood and cognition, inadequate evidence that satiety enhancement can promote weight loss, and no evidence on which consumers would benefit most from satiety enhancement. The appetite-reducing effects of specific foods or diets will be much more subtle than those of pharmaceutical compounds in managing hunger; nevertheless, the experience of pharmacology in producing weight loss via effects on appetite suggests that there is potential benefit of satiety enhancement from foods incorporated into the diet to the consumer.


Assuntos
Dieta , Alimentos , Saciação/fisiologia , Afeto , Regulação do Apetite , Cognição/fisiologia , Ingestão de Alimentos/fisiologia , Ingestão de Alimentos/psicologia , Ingestão de Energia , Promoção da Saúde , Humanos , Fome , Prazer , Redução de Peso
14.
Appetite ; 57(3): 839-43, 2011 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-21801770

RESUMO

Infant feeding is a challenging and intricate process. Food intake is shaped by prior experience of flavours derived from the maternal diet in utero and via human milk, by ongoing experience of foods eaten during the first years of life including the variety, types and frequency of foods offered. The ways in which parents interact with their children including the way foods are presented, the emotional context they cultivate and the feeding practices they use can influence their children's eating habits, either positively or negatively. There is a mismatch between what government guidelines advise parents in relation to the "when, what and how" to feed children including during the weaning period and what parents actually do. Acquisition of food preferences and the establishment of eating habits in the early years form part of an ongoing, complex developmental process, however there is a gap between experimental evidence on best practice in infant feeding and what parents receive as advice about feeding. It is timely, therefore, to translate these findings into solutions for parents. Practical support for infant feeding should be evidence based, parent-focused and contingent on the needs of the developing child since infant feeding sets the foundation of healthy eating habits for life.


Assuntos
Comportamento Alimentar/psicologia , Preferências Alimentares/psicologia , Alimentos Infantis , Desenvolvimento Infantil , Pré-Escolar , Dieta , Alimentos Orgânicos , Guias como Assunto , Humanos , Lactente , Fenômenos Fisiológicos da Nutrição do Lactente , Poder Familiar/psicologia , Desmame
15.
Appetite ; 52(2): 355-62, 2009 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-19071171

RESUMO

Two studies investigated the stress-eating relationship. The first examined self-reported changes in intake of snack foods, whilst the second investigated stress-induced overconsumption in a laboratory setting comparing high (HF) and low-fat (LF) snacks. Eighty-nine females completed the Dutch Eating Behaviour Questionnaire (DEBQ) [Van Strien, T., Fritjers, J. E. R., Bergers, G. P. A., & Defares, P. B. (1986). Dutch Eating Behaviour Questionnaire for assessment of restrained, emotional and external eating behaviour. International Journal of Eating Disorders, 5, 295-315] and a self-report measure designed to evaluate changes in eating in response to stress. Increased intake of HF snacks was associated with high emotional eating but not with restraint. A laboratory-based experiment compared intake of HF and LF snacks after ego-threatening and neutral Stroop colour-naming tasks. Intake was suppressed by 31.8% in restrained compared to unrestrained eaters across tasks. Restrained eaters consumed significantly less after ego-threat than after the neutral manipulation, but this was associated only with intake of the LF snack. Restrained eaters' intake of dried fruit was suppressed by 33.2% after ego-threat relative to the neutral task, despite a significant increase in hunger for this group following ego-threat. These results suggest that the type and variety of foods offered influences the link between stress and eating in laboratory settings. Further research should aim to replicate and extend these findings, with a view to informing potential interventions for stress-related eating.


Assuntos
Gorduras na Dieta , Emoções , Ingestão de Energia , Comportamento Alimentar , Estresse Psicológico , Adolescente , Índice de Massa Corporal , Bulimia , Cacau , Dieta com Restrição de Gorduras , Carboidratos da Dieta , Feminino , Humanos , Controle Interno-Externo , Inquéritos e Questionários , Adulto Jovem
16.
Physiol Behav ; 90(2-3): 368-75, 2007 Feb 28.
Artigo em Inglês | MEDLINE | ID: mdl-17107693

RESUMO

To compare the effects on appetite and energy intake (EI) within a meal and across 4 days of drinking wine either before (aperitif) or with (co-ingestion) a meal, 11 men attended the laboratory on three occasions. On each occasion participants were given breakfast in the laboratory then 3 h later returned for a two course (garlic bread, pizza) lunch, then recorded food intake for the remainder of the day and the next 3 days. In the control condition, participants ate lunch ad libitum; in the aperitif condition 375 ml of red wine was consumed 20 min before lunch; and in the co-ingestion condition 125 ml of red wine was consumed with the starter and 250 ml of red wine was consumed with the main course. Subjective ratings of appetite and mood were administered before and after the meal. EI at lunch was greater when wine was consumed (p<0.01) (aperitif: 6436+/-435 kJ; co-ingestion: 6254+/-417 kJ) compared to control (5125+/-262 kJ). In particular, intake of the starter was enhanced by wine consumption. Having wine as an aperitif significantly influenced subjective ratings of light headedness and fatigue. These results suggest that the effects of wine on appetite are immediate, and stimulate food intake early in the meal. Total EI during the test days was significantly higher than during subsequent days revealing a tendency to overeat in the laboratory, exacerbated by drinking wine before or with lunch. However, lean healthy men adjusted total EI on the days following the laboratory in all conditions.


Assuntos
Regulação do Apetite/efeitos dos fármacos , Estimulantes do Apetite/farmacologia , Ingestão de Alimentos/efeitos dos fármacos , Ingestão de Energia/efeitos dos fármacos , Etanol/farmacologia , Adolescente , Adulto , Consumo de Bebidas Alcoólicas/metabolismo , Consumo de Bebidas Alcoólicas/psicologia , Análise de Variância , Regulação do Apetite/fisiologia , Gorduras na Dieta/metabolismo , Esquema de Medicação , Ingestão de Alimentos/psicologia , Ingestão de Energia/fisiologia , Metabolismo Energético/efeitos dos fármacos , Metabolismo Energético/fisiologia , Humanos , Masculino , Pessoa de Meia-Idade , Valores de Referência , Resposta de Saciedade/efeitos dos fármacos , Estatísticas não Paramétricas , Fatores de Tempo , Vinho
17.
Physiol Behav ; 87(4): 714-22, 2006 Apr 15.
Artigo em Inglês | MEDLINE | ID: mdl-16516251

RESUMO

Volume has been shown to be an important direct control of food intake, since larger volumes of food consumed prior to a meal can inhibit subsequent intake. Variety of food is known to stimulate food intake. The present study was designed to examine the relative effects of manipulating the volume of a soup preload in the context of providing either a single or a variety of sandwich fillings. Thirty participants (15 females; 15 males) attended the laboratory on 4 occasions to receive a low (f=240 ml, 3.6 kJ/g; m=300 ml, 3.6 kJ/g) or high (f=480 ml, 1.8 kJ/g; m=600 ml, 1.8 kJ/g) volume tomato soup preload 30 min before a sandwich lunch with either single or a variety of fillings. Overall, subjects reported significant differences in hunger and fullness as a function of volume manipulations but the satiety quotient (SQ: change in ratings divided by weight of soup) calculated just before lunch indicated a smaller SQ for high than for the low volume soup. Therefore, although subjective ratings were influenced by volume this was not sufficient to affect intake at lunch. Variety (2344+/-200 kJ) increased food intake at lunch compared to the single filling condition (2062+/-171 kJ), an enhancement by variety of 14%. In conclusion, lowering energy density and increasing volume by adding water failed to reduce intake at lunch. Clearly volume effects on intake rely both on amount consumed and energy density. As predicted, variety stimulated food intake and this occurred across volume conditions.


Assuntos
Regulação do Apetite/fisiologia , Ingestão de Alimentos/fisiologia , Ingestão de Energia/fisiologia , Comportamento Alimentar/fisiologia , Resposta de Saciedade/fisiologia , Adolescente , Adulto , Análise de Variância , Ingestão de Alimentos/psicologia , Comportamento Alimentar/psicologia , Feminino , Preferências Alimentares/fisiologia , Preferências Alimentares/psicologia , Humanos , Masculino , Pessoa de Meia-Idade , Valores de Referência , Fatores Sexuais
18.
Public Health Nutr ; 8(6): 650-6, 2005 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-16236195

RESUMO

OBJECTIVE: To assess the impact of a school-based nutrition education intervention aimed at increasing the consumption of fruits and vegetables. DESIGN: The intervention programme increased the provision of fruits and vegetables in schools and provided a range of point-of-purchase marketing materials, newsletters for children and parents, and teacher information. Curriculum materials at age 6-7 and 10-11 years were also developed and utilised. Evaluation was undertaken with groups of younger (aged 6-7 years) and older (aged 10-11 years) children. Methods included 3-day dietary records with interview and cognitive and attitudinal measures at baseline, with follow-up at 9 months, in intervention and control schools. SETTING: The work was undertaken in primary schools in Dundee, Scotland. SUBJECTS: Subjects comprised 511 children in two intervention schools with a further 464 children from two schools acting as controls. RESULTS: Children (n=64) in the intervention schools had an average increase in fruit intake (133+/-1.9 to 183+/-17.0 g day(-1)) that was significantly (P<0.05) greater than the increase (100+/-11.7 to 107+/-14.2 g day(-1)) estimated in children (n=65) in control schools. No other changes in food or nutrient intake were detected. Increases in scores for variables relating to knowledge about fruits and vegetables and subjective norms were also greater in the intervention than in the control group, although taste preferences for fruits and vegetables were unchanged. CONCLUSIONS: It is concluded that a whole school approach to increasing intakes of fruits and vegetables has a modest but significant effect on cognitive and attitudinal variables and on fruit intake.


Assuntos
Frutas , Conhecimentos, Atitudes e Prática em Saúde , Ciências da Nutrição/educação , Estudantes/psicologia , Verduras , Criança , Registros de Dieta , Feminino , Preferências Alimentares , Serviços de Alimentação , Educação em Saúde , Promoção da Saúde , Humanos , Masculino , Instituições Acadêmicas , Escócia
19.
Int J Obes (Lond) ; 29(10): 1199-203, 2005 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-16155587

RESUMO

OBJECTIVE: To assess prevalence and socioeconomic context of overweight and obesity in a cohort of Scottish children. DESIGN: Cross-sectional study. SETTING: Primary schools in Dundee, Angus, and Fife, Eastern Scotland, UK. PARTICIPANTS: A total of 1240 boys and 1214 girls aged between 4-10 y. MAIN OUTCOME MEASURE: Weight, height and body mass index (weight/height2). RESULTS: Overall overweight or obesity prevalence was 24.6%, while prevalence of obesity alone was 6.1%. Individuals from schools with a high level of low-income families were 65% more likely to be overweight as judged by BMI. However, these children weighed the same as more affluent children of the same age, but were 1.26 cm shorter. CONCLUSION: These data confirm the continued increase in childhood obesity in the UK and reveal a role for height-growth limitation in the absence of overall growth restriction, among children from low-income groups. This observation raises important questions regarding socioeconomic environmental factors in promoting the currently increasing levels of obesity.


Assuntos
Estatura , Obesidade/epidemiologia , Classe Social , Índice de Massa Corporal , Criança , Pré-Escolar , Estudos de Coortes , Estudos Transversais , Feminino , Humanos , Masculino , Sobrepeso , Prevalência , Escócia/epidemiologia
20.
Diabetologia ; 48(8): 1496-502, 2005 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-16007414

RESUMO

AIMS/HYPOTHESIS: Peroxisome proliferator-activated receptor gamma is an important regulator of adiposity in mouse and man, and common variation in the PPARG gene has been associated with birthweight, adult obesity, insulin sensitivity and type 2 diabetes. We hypothesised that these variants may be associated with childhood obesity. METHODS: Height and weight were recorded for 2454 prepubertal children aged between 4 and 10 years, who were then genotyped for three common variants of the PPARG locus: C-681G, Pro12Ala and C1431T. RESULTS: No single variant of PPARG was significantly associated with height, weight or BMI. However, when modelling the variants together we detected an opposing interaction between the -681G and the Ala12 variants in height and weight, but not BMI (p=0.018, 0.013 and 0.119 respectively). The data were consistent with the Ala12 carriers being deficient in energy storage/utilisation, leading to reduced growth. In contrast, the -681G variant, which has been associated with increased adult height, was associated with accelerated growth. The two variants were in strong linkage disequilibrium. However, rare individuals bearing the isolated variants demonstrated the greatest variation from the mean, the most contrasting genotypes being associated with a variation of 7 kg in weight and 6 cm in height, standardised to 7.4-year-olds (p=0.006 and p=0.02 respectively). CONCLUSIONS/INTERPRETATION: This study demonstrates that quantitative trait analysis of energy balance/growth and the PPARG locus is complex and requires the use of multiple genetic markers.


Assuntos
Crescimento/genética , PPAR gama/genética , Alelos , Estatura/genética , Índice de Massa Corporal , Peso Corporal/genética , Criança , DNA/genética , Metabolismo Energético/fisiologia , Feminino , Genótipo , Haplótipos , Humanos , Masculino , Obesidade/epidemiologia , Fenótipo , Reino Unido/epidemiologia
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