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Background: People in Cameroon are experiencing a dietary transition characterized by changing from traditional food habits to increased intake of highly processed sweet and fatty food. The rapid change in food pattern combined with an increased sedentary lifestyle has resulted in a rather high prevalence of obesity, hypertension, cardiovascular diseases and type 2 diabetes. Nutritional intake is important during adolescence for growth spurt, health, cognitive development and performance in school. Objective: The aim of this thesis was to assess dietary intake, anthropometry and physical activity of adolescents according to sex and socioeconomic status (SES) and to investigate food perceptions of adolescents living in urban and rural areas of Cameroon. Methods: Girls and boys, 12-16 years of age, were randomly selected from schools in urban and rural areas. Food frequency questionnaire, 24-hour dietary and physical activity recalls, anthropometric measurements, qualitative interviews and a background questionnaire were used for data collection. Results: The proportion of overweight was three times higher in girls (14%) compared to boys (4%). Stunting and underweight were more common among boys (15% and 6%) than girls (5% and 1%). The prevalence of stunting was two times higher among the urban adolescents with low SES (12%) compared to those with high SES (5%). The rural adolescents had the highest proportion of stunting but more muscle that the urban adolescents. The rural adolescents ate in order to live and to maintain health. Urban adolescents with low SES ate in order to maintain health, while those with high SES ate for pleasure. More than 30% of the adolescents skipped breakfast in the urban area. Urban adolescents with high SES and girls reported a more frequent consumption of in-between meals and most food groups compared to the rural adolescents, boys and those with low SES. Over 55% of the adolescents had a protein intake below 10% of the energy (E%). Twenty-six percent of the adolescents had fat intake below 25 E%, and 25% had fat intake above 35 E%. A large proportion of the adolescents had an intake of micronutrients below the estimated average recommendation. Boys and the adolescents with low SES reported a higher energy expenditure and physical activity level than girls and the adolescents with high SES, respectively. Both under- and over-reporting of energy intake were common among the adolescents. Conclusions: The present study showed that nutrient inadequacy, stunting, underweight, as well as overweight and obesity were common among the adolescents in Cameroon. Therefore an intervention program targeting both under- and overnutrition among school adolescents is needed. Sex and socioeconomic differences also need to be considered.

Os anos 90 marcaram a expansão dos programas sociais em países em desenvolvimento, sendo que muitos desses programas consistem em aliviar a pobreza extrema e promover melhoras à vida dos indivíduos vulneráveis a tal condição. Com isso, tornou-se importante avaliar os efeitos de programas sociais a fim de verificar se o dinheiro designado pelos governos tinha o impacto esperado sobre seus beneficiados. Levando em consideração a importância dessa avaliação, diversos pesquisadores iniciaram estudos tendo como foco o principal programa federal brasileiro: o Bolsa Família. O presente estudo busca contribuir analisando os efeitos do Bolsa Família sobre o consumo de nutrientes e os índices antropométricos, utilizando dados da Pesquisa de Orçamentos Familiares (POF) de 2008-2009. Para o consumo de nutrientes, lançou-se mão de uma subamostra constituída por 25% da amostra original da POF, com pessoas com 10 anos ou mais de idade, às quais foi solicitado que registrassem todo o alimento consumido durante 24 horas em dois dias não consecutivos. A partir disso, a quantidade de alimentos da caderneta pessoal foi transformada em quantidades de nutrientes, as quais foram utilizadas nesse estudo para analisar os efeitos do PBF sobre o consumo de nutrientes. Os índices antropométricos, baseados na amostra original, foram obtidos usando a altura e peso dos indivíduos para calcular os escores Z de altura-para-idade, peso-para-idade e IMC-para-idade. Para atingir o objetivo proposto, os dados foram separados em dois grupos: os beneficiados e os não beneficiados pelo PBF. Inicialmente analisou-se a probabilidade de um indivíduo receber ou não o benefício, para encontrar pessoas beneficiadas com características muito próximas às das não beneficiadas. Essa comparação baseada em escores de propensão d´a o nome ao método utilizado nesse estudo: Propensity Score Matching. Os resultados obtidos sugerem que o Bolsa Família contribuiu para que as pessoas tivessem acesso a alimentos saudáveis. Encontrou-se aumento no consumo de fibras, carboidratos e algumas vitaminas e minerais. Houve também uma redução no consumo de colesterol e de sódio. Ademais, ressalta-se o consumo maior de ácidos graxos essenciais para a saúde. Aliado à prática de boa alimentação, constatou-se que o PBF colaborou para que crianças e adolescentes obtivessem índices antropométricos considerados adequados em comparação com seus pares não beneficiados. / The 1990s marked the expansion of social programs in developing countries, many of which were designed to alleviate extreme poverty and promote better living conditions for extremely poor individuals. Thus, it became important to evaluate the effects of social programs to check whether the funds allocated to them by governments had the expected impact on their beneficiaries. Considering the importance of this evaluation, several researchers began to conduct studies focused on the main Brazilian federal program: the Bolsa Família Program (Family Stipendium). This study is intended to contribute to this effort by analyzing the effects of the Bolsa Família Program on nutrient intake and anthropometric indices based on data from Brazil\'s 2008-2009 Consumer Expenditure Survey (Pesquisa de Orçamentos Familiares - POF). For nutrient intake, a subsample comprising 25% of the original POF sample was used with people aged 10 or older, who were asked to report all the food they had consumed in 24 hours over two nonconsecutive days. Based on this information, the reported amount of food was converted into nutrients, which were used in this study to analyze the effects of the Bolsa Família Program on nutrient intake. Based on the original sample, anthropometric indices were calculated according to the height and weight of the individuals in the form of Z-scores for height-for-age, weight-for-age, and BMI-for-age. For the proposed objective to be achieved, the data were separated into two groups, namely, beneficiaries and non-beneficiaries of the Bolsa Família Program, and the probability of an individual receiving or not receiving the benefit was thus estimated. It was therefore possible to identify beneficiaries with very similar features to those on non-beneficiaries, and this comparison based on propensity scores gave name to the method used in this study: Propensity Score Matching. The results suggest that the Bolsa Família Program contributed to people having access to healthy food. An increase in the consumption of fibers, carbohydrates, and some vitamins and minerals was observed. A greater consumption of essential fatty acids was also observed. In addition, the fact that a decrease in the consumption of cholesterol and sodium was identified deserves special mention. Combined with good nutrition practices, it was seen that the Bolsa Família Program contributed for children and adolescents to have indices that are considered appropriate as compared to those of their non-beneficiary peers.

Made available in DSpace on 2014-06-11T19:31:05Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-04-06Bitstream added on 2014-06-13T19:40:55Z : No. of bitstreams: 1 pegolo_ge_dr_arafcf.pdf: 1854514 bytes, checksum: c10247da7ef6f0014c6571c36e0d6903 (MD5) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / O objetivo deste estudo foi rastrear a ocorrência de fatores de risco da síndrome metabólica em adolescentes eutróficos e com excesso de peso em dois momentos transversais, com intervalo de seis meses. A amostra foi constituída por 64 adolescentes divididos em quatro grupos: meninos eutróficos e com excesso de peso e meninas eutróficas e com excesso de peso. As variáveis investigadas foram: peso, estatura, circunferência da cintura, percentual de gordura corporal, pressão arterial, colesterol total, LDL-colesterol, HDLcolesterol , triglicerídeos, glicose, ingestão de nutrientes, número de passos diário e tempo gasto com hábitos sedentários (assistir televisão, uso de computador e videogames). A média de idade foi de 11,4 ±0,3 anos para os meninos e 11,5 ±0,3 anos para as meninas. Foi diagnosticado um caso de síndrome metabólica, mas a presença de fatores de risco foi constatada nas duas avaliações. Entre os adolescentes com excesso de peso, 56% dos meninos e 31% das meninas apresentaram obesidade abdominal na primeira avaliação e as mesmas proporções foram observadas no segundo momento. Houve aumento da incidência da proporção de adolescentes com baixa concentração de HDLcolesterol nos grupos eutróficos e com excesso de peso. Entre os adolescentes eutróficos, na segunda avaliação 44% dos meninos e 69% das meninas apresentaram HDL-colesterol inferior a 40 mg/dL. No grupo com excesso de peso, 69% dos meninos e 63% das meninas apresentaram tal condição. Houve redução significativa de HDL-colesterol acompanhada de aumento de triglicerídeos, dois parâmetros críticos no desenvolvimento da síndrome metabólica. Além disso, foi detectada correlação inversa e significativa entre triglicerídeos e HDL-colesterol nas duas avaliações. Entre os adolescentes com excesso de peso, houve aumento, em ambos... / The present study was aimed to track risk factors of metabolic syndrome in eutrophic and overweight adolescents in two time periods, with a time interval of six months between the two periods. The sample was composed of 64 adolescents divided into four groups: eutrophic boys, overweight boys, eutrophic girls and overweight girls. The assessed variables were: weight, height, waist circumference, body fat percentage, arterial blood pressure, total cholesterol, LDL-cholesterol, HDL-cholesterol, triglycerides, glucose, nutrient intake, number of daily steps and hours of sedentary behavior (watching TV, playing on the computer or videogames). The average age of the boys was 11.4 ±0.3 years and of the girls was 11.5 ±0.3 years. One case of metabolic syndrome was diagnosed, but the presence of risk factors was detected in both assessments. Among overweight adolescents, 56% of the boys and 31% of the girls had abdominal obesity in the first assessment and the same percentage was found in the second assessment. There was an increase in the percentage of adolescents with low HDL-cholesterol concentrations in the eutrophic and overweight groups. Among the eutrophic adolescents, in the second assessment, 44% of the boys and 69% of the girls had HDL-cholesterol lower than 40 mg/dL. In the overweight group, 69% of the boys and 63% of the girls had this condition. There was a significant reduction in HDL-cholesterol followed by an increase in the triglycerides, two critical parameters in the development of the metabolic syndrome. Besides, an inverse and significant correlation between triglycerides and HDL-cholesterol was detected in both assessments. Among overweight adolescents there was an increase, in both sexes, in the number of adolescents with the two risk factors (boys: from 12% to 44%; - girls: from 6% to 25%), due... (Complete abstract click electronic access below)

A dietary nutrient intake study of ninety-five residents of a nursing home in rural community was conducted. Nutrient intakes were determined for seven consecutive days using the method of weighing food served and weighing food left by subjects. Patients on in the study. Snacks consumed between meals and vitamin and mineral supplements were included in the nutrient intakes. Height, weight, body mass index, tricep skinfold measurement and serum blood laboratory data were obtained for each subject. Activity levels were also determined. Results showed the mean caloric intake of the men was 2152+331. For the women the mean caloric intake was 1869+251. Nutrients less 100 percent standard (RDA 1974) were energy, calcium, thiamin, riboflavin, niacin, vitamin C, potassium, fiber and fat for the men and for the women energy, calcium, iron, thiamin, niacin, vitamin C, potassium, fiber and fat. Mean Index of Nutritional Quality values for selected nutrients indicated that for men protein, vitamins A, C, thiamin, riboflavin, niacin, iron, calcium and phosphorus and INQ ratios of 1.0 or greater. INQ ratios for the women indicated that protein, vitamin A, C, riboflavin, niacin, iron, calcium, and phosphorus were greater than 1.0. Correlations were found between BMI and tricep skinfold measurement and a weak correlation between kilocalories and BMI for both men and women. All of the mean serum blood values were within normal limits except for albumin. Further studies using these methods will need to be done to determine whether high caloric intake of both men and women compared to other studies of nutrient intake of elderly subjects was possibly the result of more careful analysis or because subjects were more active.

Nutritional problems of var ious population groups throughout the world are constantly being emphasized, It has been pointed out that life expectancy at birth is only thirty to forty years for over half of the world's population , while for those people who have been able to take advantage of modern medical and nutritional science, it is sixty five to seventy years, Hunger, as well as preventing economic advancement, promotes unrest and political upheavals. The United States, in the interest of preserving its own security and way of life has a vital stake in solving world nutritional problems as well as its own. Without doubt, we are all aware of this need today of improving the nutritional needs of our own people in practically all parts of the United States. However, the nutritional needs have to be defined before improvements can be recommended. More exact and reliable criteria are needed for identifying borderline cases of malnutrition for various groups of people. This problem is gradually being solved through correlated medical, biochemical, and dietary studies. Thus, as one of the criteria on which to rely, dietary studies are one of the means of measuring the nutritional adequacy of the diet. An evaluation of the school lunch by means of a dietary study cannot be made without also considering the other foods eaten during the day. The benefit of a good school lunch to health and dietary habits, therefore, may be greatest for those children whose family food supplies and habits are the poorest. The benefit will be greatest in the extent to which the foods provided in the school lunch supplement those supplied in the home. A study of the dietary habits of school children in terms of the nutritive value of the school lunch and the rest of the day's food would help to evaluate the nutritional status for the group studied and measure the effectiveness of the school lunch program for improving the dietary habits of the children. Since the school lunch and its contribution tot the total day's diet had not been studied in Utah, seven-day dietary records of the 8th grade Logan Junior High and 8th and 9th grades Wellsville Junior High students were used in evaluating the nutrient intake of the children. The purpose of this study was to determine the contribution of each meal ( breakfast , noon meal , and evening meal) to the total day's diet with emphasis on children eating school lunch versus the children not eating school lunch . The between-meal foods were also studied to see to what extent this supplementary intake improves the overall adequacy of the adolescent's diet .

Diabetes in Indigenous Australians occurs at a younger age and at almost four times the rate of non-Indigenous Australians. While the cause for this health disparity is multi-factorial, recent studies suggest that nutrition, and particularly magnesium intake, may play a role in onset of diabetes and related pathologies. No study has ever examined whether there is any relationship between diabetes and magnesium intake in Indigenous Australians, and the present study therefore sought to establish whether any such interrelationship existed. As part of this study, dietary magnesium intake was estimated in an urban cohort of Aboriginal and Torres Strait Islander subjects and compared to the average Australian dietary intake. An ecological study then explored environmental correlates, and specifically the magnesium level in drinking water, to diabetes mortality. Finally, total and free serum magnesium concentrations were determined to identify any differences in magnesium status between diabetic and non-diabetic Indigenous and non-Indigenous Australians, and also to compare which of the two parameters was a more sensitive measure of magnesium status and diabetic risk. All Aboriginal and Torres Strait Islander people that were recruited for this study were patients of the Townsville Aboriginal and Islander Health Services, Townsville, North Queensland, who presented for health monitoring and subsequently required fasting blood tests as part of that routine care. Additional non-Indigenous people were recruited from five GP practices in the Townsville area. Inclusion criteria included persons over the age of 15 (Tanner Stage 5) who had lived in the Townsville area for at least ten days. Exclusion criteria included chronic diarrhoea, alcoholism or binge drinking in the past two weeks, use of diuretics, consumption of magnesium supplements, reduced renal function (urinary albumin to creatinine ratio exceeding > 2.5 mg/mmol in men and > 3.5 mg/mmol in women), severe mental illness, pregnancy, or breastfeeding. Our results indicated that 60% of the Indigenous people assessed in this study had a dietary intake of magnesium that was below the estimated average magnesium requirement for half the national population. Additionally, the average magnesium intake in Indigenous Australians was significantly less than the intake of non-Indigenous Australians (p<0 .001). A significant negative correlation was found between the incidence of diabetes related mortality and the concentration of magnesium in drinking water in Queensland, confirming previous reports from the USA that drinking water magnesium may be an important factor in development of diabetes. The needs assessment study confirmed that diabetes in both Indigenous and non-Indigenous Australians was associated with reduced levels of total serum magnesium, and more importantly, that total serum magnesium was lower in Indigenous Australians who did not have diabetes compared with their non-Indigenous counterparts (p=<0.001). In the absence of diabetes, the prevalence of hypomagnesaemia was 17.2% for the non-Indigenous but 36.9% for the Indigenous subjects. Finally, the ionic serum magnesium analysis confirmed the results of the total serum magnesium study, and demonstrated that ionic magnesium was strongly correlated to the total magnesium concentration (r: 0.75. p < 0.001), with the relationship being apparent irrespective of either diabetic (r: 0.66 to 0.81. p<0.001) or ethnicity (r = 0.71 to 0.81. p<0.001)." We conclude that although not causal, the evidence suggests that magnesium may be a significant contributing factor to diabetes in Australia, especially for Aboriginal and Torres Strait Islander peoples, and that further investigation of the potential relationship between magnesium and diabetes in the Australian Indigenous populations, and possible corrective interventions, is highly warranted. / http://proxy.library.adelaide.edu.au/login?url= http://library.adelaide.edu.au/cgi-bin/Pwebrecon.cgi?BBID=1348469 / Thesis (Ph.D.) - University of Adelaide, School of Medical Sciences, 2008

Diabetes in Indigenous Australians occurs at a younger age and at almost four times the rate of non-Indigenous Australians. While the cause for this health disparity is multi-factorial, recent studies suggest that nutrition, and particularly magnesium intake, may play a role in onset of diabetes and related pathologies. No study has ever examined whether there is any relationship between diabetes and magnesium intake in Indigenous Australians, and the present study therefore sought to establish whether any such interrelationship existed. As part of this study, dietary magnesium intake was estimated in an urban cohort of Aboriginal and Torres Strait Islander subjects and compared to the average Australian dietary intake. An ecological study then explored environmental correlates, and specifically the magnesium level in drinking water, to diabetes mortality. Finally, total and free serum magnesium concentrations were determined to identify any differences in magnesium status between diabetic and non-diabetic Indigenous and non-Indigenous Australians, and also to compare which of the two parameters was a more sensitive measure of magnesium status and diabetic risk. All Aboriginal and Torres Strait Islander people that were recruited for this study were patients of the Townsville Aboriginal and Islander Health Services, Townsville, North Queensland, who presented for health monitoring and subsequently required fasting blood tests as part of that routine care. Additional non-Indigenous people were recruited from five GP practices in the Townsville area. Inclusion criteria included persons over the age of 15 (Tanner Stage 5) who had lived in the Townsville area for at least ten days. Exclusion criteria included chronic diarrhoea, alcoholism or binge drinking in the past two weeks, use of diuretics, consumption of magnesium supplements, reduced renal function (urinary albumin to creatinine ratio exceeding > 2.5 mg/mmol in men and > 3.5 mg/mmol in women), severe mental illness, pregnancy, or breastfeeding. Our results indicated that 60% of the Indigenous people assessed in this study had a dietary intake of magnesium that was below the estimated average magnesium requirement for half the national population. Additionally, the average magnesium intake in Indigenous Australians was significantly less than the intake of non-Indigenous Australians (p<0 .001). A significant negative correlation was found between the incidence of diabetes related mortality and the concentration of magnesium in drinking water in Queensland, confirming previous reports from the USA that drinking water magnesium may be an important factor in development of diabetes. The needs assessment study confirmed that diabetes in both Indigenous and non-Indigenous Australians was associated with reduced levels of total serum magnesium, and more importantly, that total serum magnesium was lower in Indigenous Australians who did not have diabetes compared with their non-Indigenous counterparts (p=<0.001). In the absence of diabetes, the prevalence of hypomagnesaemia was 17.2% for the non-Indigenous but 36.9% for the Indigenous subjects. Finally, the ionic serum magnesium analysis confirmed the results of the total serum magnesium study, and demonstrated that ionic magnesium was strongly correlated to the total magnesium concentration (r: 0.75. p < 0.001), with the relationship being apparent irrespective of either diabetic (r: 0.66 to 0.81. p<0.001) or ethnicity (r = 0.71 to 0.81. p<0.001)." We conclude that although not causal, the evidence suggests that magnesium may be a significant contributing factor to diabetes in Australia, especially for Aboriginal and Torres Strait Islander peoples, and that further investigation of the potential relationship between magnesium and diabetes in the Australian Indigenous populations, and possible corrective interventions, is highly warranted. / http://proxy.library.adelaide.edu.au/login?url= http://library.adelaide.edu.au/cgi-bin/Pwebrecon.cgi?BBID=1348469 / Thesis (Ph.D.) - University of Adelaide, School of Medical Sciences, 2008

Diss. (sammanfattning) Uppsala : Sveriges lantbruksuniv., 2004. / Härtill 4 uppsatser.

Introduction: Obesity has become a major world-wide health issue. Social-economic status, physical activity levels and dietary intake may influence the weight status in children. However, these issues have not been examined together in studies of young girls in Saudi Arabia. Aim: This study aimed to investigate energy and nutrient intakes, physical activity and social economic status of girls aged 8-11 years in western Saudi Arabia according to their BMI. Methods: This study was conducted in two phases, phase one was a pilot study where 32 girls were selected to assess the suitability of body composition, dietary intake (food diary, food frequency questionnaire) and physical activity measurement tools (pedometer, physical activity questionnaire). The findings of this phase were employed in phase 2; the diet diary and accelerometer were nominated as assessment tools. In phase two, girls (n= 234) participated from different schools. Waist circumference, height and weight were measured and BMI was calculated. Girls were classified according to BMI centile charts (CDC). Dietary intake was measured via a 4-day food diary and accelerometers were used to assess the intensity and time spent in physical activity. Results: A total of 30% of the sample were classified obese or overweight. There was a significant difference in the mean daily energy intake between the BMI groups with the obese group having the highest energy, fat, carbohydrate and protein intake (obese group: 2677 ± 804 kcal/d; healthy weight group: 1806 ± 403 kcal/d, p< 0.001), but the percentage contribution of the macronutrients to energy intake remained the same across the BMI groups. Carbohydrate intake was shown to be the main contributor to predict obesity levels. VI There were no differences in number of steps taken per day or time spent in moderate/ vigorous intensity exercise according to BMI category. Most of the girls did not meet daily physical activity guidelines (5969 to 6773 steps per day and 18.5 - 22.5 mins per day of moderate- vigorous activity). Intake of sweets and sugary drinks, and total energy intake were significantly higher in the high income group compared to the low income group. However, family income was not associated with BMI status. Conclusion: The results of this study suggest that obesity in girls aged 8-11 years is linked to excessive energy intake from all macronutrients and the majority of girls in all weight categories are inactive. Research should be conducted to develop interventions to promote dietary change and activity that is culturally acceptable for girls in Saudi Arabia.