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1.
Pediatr Diabetes ; 21(7): 1277-1284, 2020 11.
Artigo em Inglês | MEDLINE | ID: mdl-32738012

RESUMO

BACKGROUND: Youth with type 1 diabetes (T1D) are encouraged to participate in physical activity (PA). Studies have identified fear of hypoglycemia (FOH) as a barrier to participating in PA. OBJECTIVES: To examine (a) PA patterns in youth with T1D by age group and (b) the relationship between both parental and youth FOH and youth PA. METHODS: A cross-sectional analysis from the SEARCH cohort study visit of youth ages 10 to 17 years with T1D (n = 1129) was conducted. Linear regression models estimated the association between self-reported number of days of vigorous PA (VPA) and moderate PA (MPA) and both youth- and parent-reported FOH. Multivariable models were adjusted for age, sex, race, duration of T1D, HbA1c, use of continuous glucose monitoring (CGM), recent severe hypoglycemia, primary insulin regimen, and BMI. RESULTS: Participants were 52% female, had mean (sd) age 14.4 (4.2) years, diabetes duration 7.5 years (1.8), HbA1c 9.2% (1.7). Older youth were less likely to engage in VPA (P < .01), or sports teams (P < .01), but more likely to engage in MPA (P < .01). Higher youth FOH (behavior subscale) was associated with increased levels of VPA (ß (se) 0.30 (0.11), P = .01) but not significantly associated with MPA (P = .06). There was no statistically significant association between parental FOH and youth PA. CONCLUSIONS: In SEARCH participants with T1D, VPA, and team sports participation declined with age, while MPA increased. We observed that higher scores on the youth FOH behavioral subscale were associated with increased VPA levels, suggesting that FOH may be less of a barrier to PA than previously thought.


Assuntos
Diabetes Mellitus Tipo 1/complicações , Diabetes Mellitus Tipo 1/psicologia , Exercício Físico/psicologia , Medo , Hipoglicemia/etiologia , Hipoglicemia/psicologia , Adolescente , Automonitorização da Glicemia , Criança , Estudos de Coortes , Estudos Transversais , Diabetes Mellitus Tipo 1/terapia , Feminino , Humanos , Hipoglicemiantes/uso terapêutico , Insulina/uso terapêutico , Masculino , Pais/psicologia
2.
Diabet Med ; 36(8): 1028-1036, 2019 08.
Artigo em Inglês | MEDLINE | ID: mdl-31050009

RESUMO

AIM: To examine the distribution and association of sociodemographic, adherence, and barriers-to-care factors in relation to glycaemic control within insulin regimens in US children with Type 1 diabetes in the SEARCH for Diabetes in Youth Study. METHODS: Self- or parent-reported data from 1095 children with Type 1 diabetes aged 10-17 years were collected on insulin regimen, sociodemographics, diabetes self-management, diabetes-related family conflict and barriers to care. Multivariable logistic regression analysis identified poor glycaemic control correlates within each insulin regimen. RESULTS: Participants included 694 children on insulin pump therapy, 188 receiving basal-bolus injections, and 213 on a mixed insulin regimen. Of these, 28.5%, 45.2% and 51.2%, respectively, had poor glycaemic control [HbA1c ≥ 80 mmol/mol (9.5%)]. Family conflict between parent and child regarding diabetes management was the only factor significantly associated with poor glycaemic control in all insulin regimens (insulin pump, P≤ 0.0001; basal-bolus injections, P=0.0002; mixed insulin regimen, P=0.0103). For children on insulin pump, poor control was significantly associated with non-white race (P=0.0008), living in multiple households (P=0.0331), having Medicaid insurance (P=0.0090), and decreased insulin adherence (P<0.0001). For children on a mixed insulin regimen, living in multiple households (P=0.0256) and not spending enough time with healthcare provider (P=0.0058) correlated with poor control. CONCLUSIONS: A high percentage of US children with Type 1 diabetes had poor glycaemic control, especially those not using an insulin pump. Early identification of children with risk factors associated with poor glycaemic control within insulin regimens and addressing diabetes-related family conflict may allow interventions to improve diabetes management.


Assuntos
Diabetes Mellitus Tipo 1/prevenção & controle , Hipoglicemiantes/uso terapêutico , Insulina/uso terapêutico , Adolescente , Glicemia/metabolismo , Criança , Diabetes Mellitus Tipo 1/epidemiologia , Feminino , Hemoglobinas Glicadas/metabolismo , Humanos , Masculino , Adesão à Medicação , Fatores de Risco , Fatores Socioeconômicos , Resultado do Tratamento , Estados Unidos/epidemiologia
3.
Pediatr Obes ; 13(5): 321-329, 2018 05.
Artigo em Inglês | MEDLINE | ID: mdl-28635082

RESUMO

BACKGROUND: American Indian (AI) youth are at high risk for type 2 diabetes. OBJECTIVES: To partner with Eastern Band of Cherokee Indians and Navajo Nation to develop a culturally sensitive behavioural intervention for youth (Tribal Turning Point; TTP) and assess feasibility in an 8-month randomized pilot study. METHODS: We enrolled 62 overweight/obese AI children (7-10 years) who participated with ≥1 parent/primary caregiver. Intervention participants (n = 29) attended 12 group classes and five individual sessions. Control participants (n = 33) attended three health and safety group sessions. We analysed group differences for changes in anthropometrics (BMI, BMI z-score, waist circumference), cardiometabolic (insulin, glucose, blood pressure) and behavioural (physical activity and dietary self-efficacy) outcomes. RESULTS: Study retention was 97%, and intervention group attendance averaged 84%. We observed significant treatment effects (p = 0.02) for BMI and BMI z-score: BMI increased in control (+1.0 kg m-2 , p < 0.001) but not intervention participants (+0.3 kg m-2 , p = 0.13); BMI z-score decreased in intervention (-0.17, p = 0.004) but not control participants (0.01, p = 0.82). There were no treatment effects for cardiometabolic or behavioural outcomes. CONCLUSIONS: We demonstrated that a behavioural intervention is feasible to deliver and improved obesity measures in AI youth. Future work should evaluate TTP for effectiveness, sustainability and long-term impact in expanded tribal settings.


Assuntos
Diabetes Mellitus Tipo 2/prevenção & controle , Promoção da Saúde/métodos , Entrevista Motivacional/métodos , Obesidade Infantil/terapia , Adolescente , Comportamento do Adolescente , Antropometria , Glicemia , Criança , Diabetes Mellitus Tipo 2/etnologia , Diabetes Mellitus Tipo 2/etiologia , Estudos de Viabilidade , Feminino , Grupos Focais/métodos , Comportamentos Relacionados com a Saúde , Humanos , Indígenas Norte-Americanos , Insulina/sangue , Estilo de Vida , Masculino , Obesidade Infantil/complicações , Projetos Piloto , Fatores de Risco , Autoeficácia
5.
Children (Basel) ; 4(8)2017 Jul 25.
Artigo em Inglês | MEDLINE | ID: mdl-28757589

RESUMO

The Obesity Reduction and Awareness of Non-communicable disease through Group Education (ORANGE) Phase II program, is a school-based intervention aimed at healthy lifestyle practices for sixth and seventh grade adolescents (n = 2345) attending private (n = 1811) and government (n = 534) schools in Chennai. The objectives of this paper are (a) to describe the intervention activities and their outcomes qualitatively and (b) to report changes in body mass index (BMI) of the intervention group participants. This intervention strategy used a teacher-peer-training model in each school for long-term sustainability of the lessons learned from this program. During each intervention session, teachers led a classroom discussion on the health topic of interest, and peers facilitated small-group learning activities. Anthropometric measurements of participants were assessed pre- and post-intervention. We found government school students perceived hygienic actions (e.g., drinking clean water, taking baths daily) as healthy habits for preventing diabetes, whereas private school students associated an expensive lifestyle (e.g., eating at restaurants, riding a car) with diabetes prevention. Overall, the mean post-intervention BMI (18.3 kg/m2) was in the normal range compared to the pre-intervention BMI (17.7 kg/m2) (p < 0.0001). These results suggest that future interventions should be tailored for adolescents from different socio-economic groups while acknowledging their varied perceptions.

6.
Diabet Med ; 34(11): 1500-1507, 2017 11.
Artigo em Inglês | MEDLINE | ID: mdl-28626906

RESUMO

As the prevalence of obesity in Type 1 diabetes rises, the effects of emerging therapy options should be considered in the context of both weight and glycaemic control outcomes. Artificial pancreas device systems will 'close the loop' between blood glucose monitoring and automated insulin delivery and may transform day-to-day dietary management for people with Type 1 diabetes in multiple ways. In the present review, we draw directly from cognitive restraint theory to consider unintended impacts that closed-loop systems may have on ingestive behaviour and food intake. We provide a brief overview of dietary restraint theory and its relation to weight status in the general population, discuss the role of restraint in traditional Type 1 diabetes treatment, and lastly, use this restraint framework to discuss the possible behavioural implications and opportunities of closed-loop systems in the treatment of Type 1 diabetes. We hypothesize that adopting closed-loop systems will lift the diligence and restriction that characterizes Type 1 diabetes today, thus requiring a transition from a restrained eating behaviour to a non-restrained eating behaviour. Furthermore, we suggest this transition be leveraged as an opportunity to teach people lifelong eating behaviour to promote healthy weight status by incorporating education and cognitive reappraisal. Our aim was to use a transdisciplinary approach to highlight critical aspects of the emerging closed-loop technologies relating to eating behaviour and weight effects and to promote discussion of strategies to optimize long-term health in Type 1 diabetes via two key outcomes: glycaemic control and weight management.


Assuntos
Cognição/fisiologia , Diabetes Mellitus Tipo 1/sangue , Diabetes Mellitus Tipo 1/tratamento farmacológico , Comportamentos Relacionados com a Saúde/fisiologia , Sistemas de Infusão de Insulina , Insulina/administração & dosagem , Pâncreas Artificial , Automonitorização da Glicemia/instrumentação , Automonitorização da Glicemia/métodos , Diabetes Mellitus Tipo 1/psicologia , Comportamento Alimentar/fisiologia , Comportamento Alimentar/psicologia , Humanos , Modelos Psicológicos , Autocontrole/psicologia
8.
Eur J Clin Nutr ; 70(7): 802-7, 2016 07.
Artigo em Inglês | MEDLINE | ID: mdl-26908421

RESUMO

BACKGROUND/OBJECTIVES: This study aimed to determine the association between a Mediterranean diet and glycemic control and other cardiovascular risk factors among youth with type I diabetes (TID). SUBJECTS/METHODS: Incident TID cases aged <20 years at diagnosis between 2002 and 2005 were included. Participants were seen at baseline (N=793), 1-year (N=512) and 5-year follow-up visits (N=501). Mediterranean diet score was assessed using a modified KIDMED index (mKIDMED). Multivariate linear regression and longitudinal mixed model were applied to determine the association between mKIDMED score and log-HbA1c, lipids, blood pressure (BP) and obesity. RESULTS: In cross-sectional analyses using baseline data, for individuals with the hemoglobin A1c (HbA1c) of 7.5%, a two-point higher mKIDMED score (1 s.d.) was associated with 0.15% lower HbA1c (P=0.02). A two-point higher mKIDMED score was associated with 4.0 mg/dl lower total cholesterol (TC) (P=0.006), 3.4 mg/dl lower low-density lipoprotein cholesterol (LDL-C) (P=0.004), 3.9 mg/dl lower non-high-density lipoprotein cholesterol (non-HDL-C) (P=0.004) and 0.07 lower LDL-C/HDL-C ratio (P=0.02). Using longitudinal data, a two-point increase in mKIDMED score was associated with 0.01% lower log-HbA1c (P=0.07), 1.8 mg/dl lower TC (P=0.05), 1.6 mg/dl lower LDL-C (P=0.03) and 1.8 mg/dl lower non-HDL-C (P=0.03) than would otherwise have been expected. HbA1c mediated ∼20% of the association for lipids in both cross-sectional and longitudinal models. An unexpected positive association between mKIDMED score and systolic BP was found among non-Hispanic white youth in cross-sectional analyses (P=0.009). Mediterranean diet was not associated with obesity. CONCLUSIONS: Mediterranean diet may improve glycemic control and cardiovascular health in TID youth.


Assuntos
Glicemia/metabolismo , Doenças Cardiovasculares/sangue , Diabetes Mellitus Tipo 1/dietoterapia , Dieta Mediterrânea , Comportamento Alimentar , Hemoglobinas Glicadas/metabolismo , Lipídeos/sangue , Adolescente , Adulto , Pressão Sanguínea , Doenças Cardiovasculares/etiologia , Criança , Pré-Escolar , Estudos Transversais , Diabetes Mellitus Tipo 1/sangue , Diabetes Mellitus Tipo 1/complicações , Diabetes Mellitus Tipo 1/tratamento farmacológico , Feminino , Seguimentos , Humanos , Insulina/uso terapêutico , Lipoproteínas/sangue , Masculino , Obesidade , Cooperação do Paciente , Fatores de Risco , População Branca , Adulto Jovem
9.
Nutr Diabetes ; 5: e166, 2015 Jun 22.
Artigo em Inglês | MEDLINE | ID: mdl-26098445

RESUMO

BACKGROUND/OBJECTIVES: Nonglycemic factors like iron deficiency (ID) or anemia may interfere with classification of diabetes and prediabetes using hemoglobin A1c (HbA1c). However, few population-based studies of diabetes in areas with endemic ID/anemia have been conducted. We aimed to determine how mutually exclusive categories of ID alone, anemia alone and iron-deficiency anemia (IDA) were each associated with prediabetes and diabetes prevalence using fasting blood glucose (FBG) versus HbA1c in a population-based study of adults with endemic ID/anemia. SUBJECTS/METHODS: We used data from the China Health and Nutrition Survey, a longitudinal, population-based study across 228 communities within nine provinces of China. This analysis included 7308 adults seen in the 2009 survey aged 18-75 years. We used descriptive and covariate-adjusted models to examine relative risk of prediabetes and diabetes using FBG alone, HbA1c alone, HbA1c and FBG, or neither (normoglycemia) by anemia alone, ID alone, IDA or normal iron/hemoglobin. RESULTS: Approximately 65% of individuals with diabetes in our sample were concordantly classified with diabetes using both FBG and HbA1c, while 35% had a discordant diabetes classification: they were classified using either FBG or HbA1c, but not both. Fewer participants with ID alone versus normal iron/hemoglobin were classified with diabetes using HbA1c only. From covariate-adjusted, multinomial regression analyses, the adjusted prevalence of prediabetes using HbA1c only was 22% for men with anemia alone, but 13% for men with normal iron/hemoglobin. In contrast, the predicted prevalence of prediabetes using HbA1c only was 8% for women with ID alone, compared with 13% for women with normal iron/hemoglobin. CONCLUSIONS: These findings suggest potential misclassification of diabetes using HbA1c in areas of endemic ID/anemia. Estimating diabetes prevalence using HbA1c may result in under-diagnosis in women with ID and over-diagnosis in men with anemia.

10.
Diabet Med ; 32(3): 399-406, 2015 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-25407093

RESUMO

AIMS: To describe the contribution of diabetes nutrition therapy to disease self-management among individuals with Type 1 diabetes in China and to estimate the association of diabetes nutrition therapy with dietary intake. METHODS: The 3C Study was an epidemiological study of the coverage, cost and care of Type 1 diabetes in China. The data reported in the present study are from the 3C Nutrition Ancillary Study, a follow-up study conducted a mean ± sd of 1.6 ± 0.2 years later. Diabetes nutrition therapy was assessed by an interviewer-administered questionnaire. Dietary intake was assessed using three 24-h recalls. The association of diabetes nutrition therapy with dietary intake was estimated using ancova. RESULTS: Participants (n = 100; 54% male) had a mean ± sd age of 41.7 ± 16.3 years and a mean ± sd diabetes duration of 11.8 ± 9.7 years. Fewer than half of the participants reported that they had 'ever' met with a dietitian. While 64% of participants were taught carbohydrate counting, only 12% 'ever' use this tool. Participants on insulin pumps and those testing ≥ 1 time/day reported greater dietary flexibility and higher fruit intakes compared with participants on other insulin regimens and testing less frequently. After adjustment for confounding by age and occupation, there were no consistent differences in dietary intake across subgroups of diabetes nutrition therapy. CONCLUSIONS: In this sample of individuals with Type 1 diabetes in China there is little dietitian involvement or carbohydrate counting. Increased frequency of nutrition education in conjunction with intensified self-monitoring of blood glucose is needed to improve care.


Assuntos
Diabetes Mellitus Tipo 1/dietoterapia , Diabetes Mellitus Tipo 1/psicologia , Comportamento Alimentar/psicologia , Terapia Nutricional/métodos , Adulto , Glicemia/metabolismo , China , Diabetes Mellitus Tipo 1/sangue , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Educação de Pacientes como Assunto , Autocuidado , Inquéritos e Questionários , Resultado do Tratamento
11.
Diabet Med ; 32(6): 829-33, 2015 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-25424501

RESUMO

AIM: To determine the potential effect sizes for the Flexible Lifestyle for Youth (FL3X) behavioural intervention to improve glycaemic control (HbA(1c)) and quality of life for at-risk adolescents with Type 1 diabetes. METHODS: Participants [n = 61; age 12-16 years, HbA(1c) 64-119 mmol/mol (8-13%)] were randomized to FL3X (minimum three sessions) or usual care. Effect sizes (Cohen's d), comparing the mean difference between the groups, were calculated. RESULTS: Study retention (95%), attendance at intervention sessions (87% attended all three sessions) and acceptability were high (100% of the adolescents and 91% of parents would recommend the programme to others). Overall, 41% of participants in the intervention group and 24% of participants in the control group were 'responders' [HbA(1c) decreased by > 6 mmol/mol (0.5%); d = 0.37]. HbA(1c) levels decreased (d = -0.18), diabetes-specific quality of life increased (d = 0.29), but generic quality of life decreased (d = -0.23) in the intervention compared with the control group. CONCLUSIONS: The FL3X programme merits further study for improving HbA(1c) and diabetes-specific quality of life in adolescents with Type 1 diabetes. (Clinical trials registry no.: NCT01286350).


Assuntos
Terapia Comportamental/métodos , Diabetes Mellitus Tipo 1/terapia , Estilo de Vida , Qualidade de Vida , Adolescente , Comportamento do Adolescente , Glicemia/metabolismo , Criança , Diabetes Mellitus Tipo 1/sangue , Estudos de Viabilidade , Feminino , Hemoglobinas Glicadas/análise , Humanos , Masculino , Projetos Piloto , Fatores de Risco , Padrão de Cuidado
12.
Eur J Clin Nutr ; 68(11): 1258-60, 2014 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-25117987

RESUMO

The association between timing of complementary food introduction and age at diagnosis of type 1 diabetes was investigated among 1077 children in the SEARCH for Diabetes in Youth study. Age at diagnosis was 5 months earlier for children introduced to sugar-sweetened beverages (SSB) in the first 12 months of life compared with those who were not (9.0±0.2 vs 9.5±0.1; P=0.02) independent of human leukocyte antigen (HLA) risk status. Analyses stratified by HLA risk status found that children with a high-risk HLA genotype had an earlier age at diagnosis if they were introduced to fruit juice in the first year of life (mean age at diagnosis=9.3±0.1, 9.1±0.1 and 9.6±0.2 for introduction at ⩽6 months, between 7 and 11 months and ⩾12 months, respectively; P=0.04). Introduction of SSB in the first year of life may accelerate the onset of type 1 diabetes independent of HLA risk status.


Assuntos
Bebidas/análise , Diabetes Mellitus Tipo 1/diagnóstico , Fenômenos Fisiológicos da Nutrição do Lactente , Carboidratos/administração & dosagem , Carboidratos/análise , Criança , Pré-Escolar , Genótipo , Antígenos HLA/genética , Humanos , Lactente , Estudos Retrospectivos , Fatores de Risco , Inquéritos e Questionários
13.
Nutr Diabetes ; 4: e118, 2014 Jun 16.
Artigo em Inglês | MEDLINE | ID: mdl-24932782

RESUMO

BACKGROUND/OBJECTIVES: Individually, genetic variants only moderately influence cardiometabolic (CM) traits, such as lipid and inflammatory markers. In this study we generated genetic risk scores from a combination of previously reported variants influencing CM traits, and used these scores to explore how adiposity levels could mediate genetic contributions to CM traits. SUBJECTS/METHODS: Participants included 1649 women from the 2005 Cebu Longitudinal Health and Nutrition Survey. Three genetic risk scores were constructed for C-reactive protein (CRP), high-density lipoprotein cholesterol (HDL-C) and triglycerides (TGs). We used linear regression models to assess the association between each genetic risk score and its related trait. We also tested for interactions between each score and measures of adiposity. RESULTS: Each genetic risk score explained a greater proportion of variance in trait levels than any individual genetic variant. We found an interaction between the TG genetic risk score (2.29-14.34 risk alleles) and waist circumference (WC) (Pinteraction=1.66 × 10(-2)). Based on model predictions, for individuals with a higher TG genetic risk score (75th percentile=12), having an elevated WC (⩾80 cm) increased TG levels from 1.32 to 1.71 mmol l(-1). However, for individuals with a lower score (25th percentile=7), having an elevated WC did not significantly change TG levels. CONCLUSIONS: The TG genetic risk score interacted with adiposity to synergistically influence TG levels. For individuals with a genetic predisposition to elevated TG levels, our results suggest that reducing adiposity could possibly prevent further increases in TG levels and thereby lessen the likelihood of adverse health outcomes such as cardiovascular disease.

14.
Diabet Med ; 31(12): 1631-42, 2014 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-24824893

RESUMO

AIMS: To compare change in dietary intake, with an emphasis on food groups and food intake behaviour, over time across treatment arms in a diabetes prevention trial and to assess the differences in dietary intake among demographic groups within treatment arms. METHODS: Data are from the Diabetes Prevention Program and Diabetes Prevention Program Outcomes Study. Participants were randomized to a lifestyle intervention (n = 1079), metformin (n = 1073) or placebo (n = 1082) for an average of 3 years, after which the initial results regarding the benefits of the lifestyle intervention were released and all participants were offered a modified lifestyle intervention. Dietary intake was assessed using a food frequency questionnaire at baseline and at 1, 5, 6 and 9 years after randomization. RESULTS: Compared with the metformin and placebo arms, participants in the lifestyle arm maintained a lower total fat and saturated fat and a higher fibre intake up to 9 years after randomization and lower intakes of red meat and sweets were maintained for up to 5 years. Younger participants had higher intakes of poultry and lower intakes of fruits compared with their older counterparts, particularly in the lifestyle arm. Black participants tended to have lower dairy and higher poultry intakes compared with white and Hispanic participants. In the lifestyle arm, men tended to have higher grain, fruit and fish intakes than women. CONCLUSIONS: Changes in nutrient intake among participants in the lifestyle intervention were maintained for up to 9 years. Younger participants reported more unhealthy diets over time and thus may benefit from additional support to achieve and maintain dietary goals.


Assuntos
Diabetes Mellitus Tipo 2/prevenção & controle , Dieta com Restrição de Gorduras/métodos , Dieta Redutora/métodos , Comportamento Alimentar , Hipoglicemiantes/uso terapêutico , Metformina/uso terapêutico , Comportamento de Redução do Risco , Adulto , Gorduras na Dieta , Fibras na Dieta , Ingestão de Alimentos , Ingestão de Energia , Feminino , Seguimentos , Frutas , Humanos , Masculino , Pessoa de Meia-Idade , Verduras
15.
Eur J Clin Nutr ; 68(12): 1327-33, 2014 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-24865480

RESUMO

BACKGROUND/OBJECTIVES: Youth with type 1 diabetes (T1DM) are at substantially increased risk for adverse vascular outcomes, but little is known about the influence of dietary behavior on cardiovascular disease (CVD) risk profile. We aimed to identify dietary intake patterns associated with CVD risk factors and evaluate their impact on arterial stiffness (AS) measures collected thereafter in a cohort of youth with T1DM. SUBJECTS/METHODS: Baseline diet data from a food frequency questionnaire and CVD risk factors (triglycerides, low density lipoprotein-cholesterol, systolic blood pressure, hemoglobin A1c, C-reactive protein and waist circumference) were available for 1153 youth aged ⩾10 years with T1DM from the SEARCH for Diabetes in Youth Study. A dietary intake pattern was identified using 33 food groups as predictors and six CVD risk factors as responses in reduced rank regression (RRR) analysis. Associations of this RRR-derived dietary pattern with AS measures (augmentation index (AIx75), n=229; pulse wave velocity, n=237; and brachial distensibility, n=228) were then assessed using linear regression. RESULTS: The RRR-derived pattern was characterized by high intakes of sugar-sweetened beverages (SSB) and diet soda, eggs, potatoes and high-fat meats and low intakes of sweets/desserts and low-fat dairy; major contributors were SSB and diet soda. This pattern captured the largest variability in adverse CVD risk profile and was subsequently associated with AIx75 (ß=0.47; P<0.01). The mean difference in AIx75 concentration between the highest and the lowest dietary pattern quartiles was 4.3% in fully adjusted model. CONCLUSIONS: Intervention strategies to reduce consumption of unhealthy foods and beverages among youth with T1DM may significantly improve CVD risk profile and ultimately reduce the risk for AS.


Assuntos
Doenças Cardiovasculares/etiologia , Diabetes Mellitus Tipo 2/fisiopatologia , Comportamento Alimentar/fisiologia , Rigidez Vascular/fisiologia , Adolescente , Pressão Sanguínea/fisiologia , Doenças Cardiovasculares/epidemiologia , Criança , Estudos de Coortes , Humanos , Modelos Lineares , Projetos Piloto , Análise de Onda de Pulso , Fatores de Risco , Fatores Socioeconômicos , Inquéritos e Questionários , Circunferência da Cintura/fisiologia , Adulto Jovem
16.
Nutr Diabetes ; 3: e91, 2013 Oct 14.
Artigo em Inglês | MEDLINE | ID: mdl-24126768

RESUMO

Youth with diabetes are at an increased risk of cardiovascular disease (CVD). Adherence to the Dietary Approaches to Stop Hypertension (DASH) diet has been shown to improve CVD risk. In this study, we evaluated whether changes in diet quality as characterized by DASH are associated with changes in CVD risk factors in youth with diabetes over time. Longitudinal mixed models were applied to data from 797 participants in the SEARCH for Diabetes in Youth Study representing three time points: baseline, 12- and 60-month follow-up. Data were restricted to youth whose diabetes was first diagnosed in 2002-2005. DASH-related adherence was poor and changed very little over time. However, an increase in DASH diet score was significantly associated with a decrease in HbA1c levels in youth with type 1 diabetes (ß=-0.20, P-value=0.0063) and a decrease in systolic blood pressure among youth with type 2 diabetes (ß=-2.02, P-value=0.0406). Improvements in dietary quality may be beneficial in youth with type 1 or type 2 diabetes. However, further work in larger groups of youth with type 1 and 2 diabetes is desirable.

17.
J Dev Orig Health Dis ; 4(1): 56-68, 2013 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-24040489

RESUMO

The dynamic aspect of early life growth is not fully captured by typical analyses, which focus on one specific time period. To better understand how infant and young child growth relate to the development of adult body composition, the authors characterized body mass index (BMI) trajectories using latent class growth analysis (LCGA) and evaluated their association with adult body composition. Data are from the Cebu Longitudinal Health and Nutrition Survey, which followed a birth cohort to age 22 years (n = 1749). In both males and females, LCGA identified seven subgroups of respondents with similar BMI trajectories from 0 to 24 months (assessed with bimonthly anthropometrics). Trajectory groups were compared with conventional approaches: (1) accelerated growth between two time points (0-4 months), (2) continuous BMI gain between two points (0-4 months and 0-24 months) and (3) BMI measured at one time point (24 months) as predictors of young adult body composition measures. The seven trajectory groups were distinguished by age-specific differences in tempo and timing of BMI gain in infancy. Infant BMI trajectories were better than accelerated BMI gain between 0 and 4 months at predicting young adult body composition. After controlling for BMI at age 2 years, infant BMI trajectories still explained variation in adult body composition. Using unique longitudinal data and methods, we find that distinct infant BMI trajectories have long-term implications for the development of body composition.


Assuntos
Desenvolvimento do Adolescente/fisiologia , Composição Corporal/fisiologia , Índice de Massa Corporal , Desenvolvimento Infantil/fisiologia , Adolescente , Antropometria , Criança , Estudos de Coortes , Feminino , Humanos , Lactente , Estudos Longitudinais , Masculino , Modelos Estatísticos , Filipinas , Adulto Jovem
18.
Diabet Med ; 30(11): 1324-32, 2013 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-23909945

RESUMO

AIMS: To determine the prevalence of plasma vitamin D (25-dihydroxyvitamin D) insufficiency in individuals with Type 1 diabetes and to determine the cross-sectional and longitudinal associations of plasma vitamin D with insulin resistance. METHODS: Participants from the SEARCH for Diabetes in Youth Study [n = 1426; mean age 11.2 years (sd 3.9)] had physician-diagnosed Type 1 diabetes [diabetes duration mean 10.2 months (sd 6.5)] with data available at baseline and follow-up (approximately 12 and 24 months after baseline). Insulin resistance was estimated using a validated equation. Cross-sectional and longitudinal multivariate logistic regression models were used to determine the association of plasma vitamin D with insulin resistance, adjusting for potential confounders. RESULTS: Forty-nine per cent of individuals had plasma vitamin D < 50 nmol/l and 26% were insulin resistant. In cross-sectional multivariate analyses, participants who had higher plasma vitamin D (65 nmol/l) had lower odds of prevalent insulin resistance than participants with lower plasma vitamin D (25 nmol/l) (odds ratio 0.70, 95% CI 0.57-0.85). This association was attenuated after additional adjustment for BMI z-score, which could be a confounder or a mediator (odds ratio 0.81, 95% CI 0.64-1.03). In longitudinal multivariate analyses, individuals with higher plasma vitamin D at baseline had lower odds of incident insulin resistance, but this was not significant (odds ratio 0.85, 95% CI 0.63-1.14). CONCLUSIONS: Vitamin D insufficiency is common in individuals with Type 1 diabetes and may increase risk for insulin resistance. Additional prospective studies are needed to determine the association between plasma vitamin D and insulin resistance, and to further examine the role of adiposity on this association.


Assuntos
Diabetes Mellitus Tipo 1/etiologia , Deficiência de Vitamina D/complicações , Vitamina D/análogos & derivados , Adolescente , Criança , Métodos Epidemiológicos , Feminino , Humanos , Resistência à Insulina/fisiologia , Masculino , Vitamina D/sangue , Adulto Jovem
20.
Diabetes Res Clin Pract ; 98(3): 487-93, 2012 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-23068959

RESUMO

AIMS: We sought to determine characteristics which strengthen the association between markers of diabetic kidney disease and retinopathy. METHODS: Multivariate regression analyses of NHANES 2005-2008 assessed the association of retinopathy with renal insufficiency and albuminuria. Analyses were stratified to evaluate ethnicity/race, obesity, and use of renin-angiotensin-aldosterone system antagonists as effect modifiers of this relationship. RESULTS: Of 269 participants with renal insufficiency, 35% had no microalbuminuria and no retinopathy; 16.1% had retinopathy with no microalbuminuria; 27.1% had microalbuminuria and no retinopathy and 22% had both microalbuminuria and retinopathy. Stratified, multivariate logistic regression analyses demonstrated retinopathy to be significantly predictive of renal insufficiency only in nonHispanic Blacks (OR=2.7; 95% CI 1.2, 6.1), obesity (OR=2.6; 95% CI 1.3, 5.5) and in those participants not using renin-angiotensin-aldosterone blockers (OR=2.5; 95% CI 1.1, 5.7). Analyses showed an independent relationship between retinopathy and albuminuria only when albuminuria was modeled continuously. CONCLUSIONS: In older onset diabetes, the absence of albuminuria and retinopathy is common among individuals with renal insufficiency. The relationship between microvascular complications of the eye and kidney may vary according to ethnicity, obesity and use of renin-angiotensin-aldosterone antagonists. These findings need to be confirmed in other large, diverse cohorts.


Assuntos
Diabetes Mellitus Tipo 2/complicações , Nefropatias Diabéticas/complicações , Retinopatia Diabética/complicações , Rim/fisiopatologia , Retina/patologia , Adulto , Negro ou Afro-Americano , Idoso , Idoso de 80 Anos ou mais , Albuminúria/etiologia , Biomarcadores , Índice de Massa Corporal , Estudos Transversais , Nefropatias Diabéticas/etnologia , Nefropatias Diabéticas/fisiopatologia , Retinopatia Diabética/etnologia , Retinopatia Diabética/patologia , Retinopatia Diabética/fisiopatologia , Feminino , Taxa de Filtração Glomerular , Inquéritos Epidemiológicos , Humanos , Masculino , Pessoa de Meia-Idade , Obesidade/complicações , Índice de Gravidade de Doença , Estados Unidos
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