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1.
Int J Obes (Lond) ; 48(1): 22-32, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-37775520

RESUMO

BACKGROUND AND OBJECTIVE: The association between physical activity and diet has a valuable impact in weight status management to counteract obesity. In this context, within different training strategies (i.e., endurance, resistance training, concurrent training, agility training) the Integrative Neuromuscular Training (INT) represents a structured training mode focused on global human movement pattern development with the aim to enhance motor control, mobility and stability. In this narrative review we aimed to discuss the feasibility of INT interventions on physical fitness and body composition outcomes in individuals with obesity. SUBJECTS: Medline/PubMed, EMBASE, Web of Science, Google Scholar including were searched before 1st February 2023 without restrictions on publication year. METHODS: Two researchers extracted data from published trials. Randomized controlled trials or clinical trials, Body Mass Index of children and adolescents at the 95% percentile or greater, and for adults to be above 30 kg/m2, detailed intervention description, randomization process and allocation into an experimental or a control group, trials must have been written in English, were included. RESULTS: We included a total of 19 studies complying with the inclusion criteria for the review process. There is evidence that INT promotes positive adaptations in fitness levels in both younger and older participants with concomitant ameliorations during a shorter, medium and longer time period. Moreover, cardiorespiratory fitness, muscular strength, balance, postural control and body composition reached significant remarkable improvements following a specific intervention based on INT principles compared to other training mode. However, Body Mass Index, fat mass percentage and waist circumference showed similar changes overtime. CONCLUSIONS: Taken together, these findings support the effectiveness of INT in ameliorating physical fitness (i.e., health-related and skill related components) without negative changes in body composition. Nevertheless, fitness coaches and therapists may consider this training modality a feasible option when prescribing physical exercise in outpatients with obesity.


Assuntos
Aptidão Física , Treinamento Resistido , Adulto , Criança , Adolescente , Humanos , Exercício Físico , Obesidade/terapia , Força Muscular
2.
Nutr Metab Cardiovasc Dis ; 29(9): 983-990, 2019 09.
Artigo em Inglês | MEDLINE | ID: mdl-31353206

RESUMO

BACKGROUND AND AIMS: Dysfunctional eating might impact on the management and metabolic control of type 2 diabetes (T2DM), modifying adherence to healthy diet and food choices. METHODS AND RESULTS: In a multicenter study, we assessed the prevalence of dysfunctional eating in 895 adult outpatients with T2DM (51% males, median age 67, median BMI 30.3 kg/m2). Socio-demographic and clinical characteristics were recorded; dysfunctional eating was tested by validated questionnaires (Eating Attitude Test-EAT-26, Binge Eating Scale-BES; Night Eating Questionnaire-NEQ); food intake and adherence to Mediterranean diet were also measured (in-house developed questionnaire and Mediterranean Diet Score-MDS). Obesity was present in 52% of cases (10% obesity class III), with higher rates in women; 22% had HbA1c ≥ 8%. The EAT-26 was positive in 19.6% of women vs. 10.2% of men; BES scores outside the normal range were recorded in 9.4% of women and 4.4% of men, with 3.0% and 1.5% suggestive of binge eating disorder, respectively. Night eating (NEQ) was only present in 3.2% of women and 0.4% of men. Critical EAT and BES values were associated with higher BMI, and all NEQ + ve cases, but one, were clustered among BES + ve individuals. Calorie intake increased with BES, NEQ, and BMI, and decreased with age and with higher adherence to Mediterranean diet. In multivariable logistic regression analysis, female sex, and younger age were associated with increase risk of dysfunctional eating. CONCLUSION: Dysfunctional eating is present across the whole spectrum of T2DM and significantly impacts on adherence to dietary restriction and food choices.


Assuntos
Comportamento de Escolha , Diabetes Mellitus Tipo 2/dietoterapia , Dieta para Diabéticos , Dieta Saudável , Dieta Mediterrânea , Comportamento Alimentar , Transtornos da Alimentação e da Ingestão de Alimentos/epidemiologia , Cooperação do Paciente , Idoso , Idoso de 80 Anos ou mais , Diabetes Mellitus Tipo 2/diagnóstico , Diabetes Mellitus Tipo 2/epidemiologia , Diabetes Mellitus Tipo 2/psicologia , Ingestão de Energia , Transtornos da Alimentação e da Ingestão de Alimentos/diagnóstico , Transtornos da Alimentação e da Ingestão de Alimentos/psicologia , Feminino , Humanos , Itália/epidemiologia , Masculino , Pessoa de Meia-Idade , Valor Nutritivo , Obesidade/epidemiologia , Obesidade/psicologia , Prevalência , Fatores de Risco
3.
Eat Weight Disord ; 23(6): 739-744, 2018 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-30374903

RESUMO

PURPOSE: Evidence that metabolically healthy obesity (MHO) is a stable benign condition is unclear. The aim of this study was to estimate the transition of MHO subjects to unhealthy obesity (occurrence of cardio-metabolic events and/or risk factors) and its predictors. METHODS: We conducted an explorative follow-up study in a subset of MHO patients > 40 years without any cardio-metabolic risk factors and with normal LDL cholesterol (LDLc) levels, identified among 1530 obese patients. Due to the low sample size, a bootstrap approach was applied to identify the variables to be included in the final multivariate discrete-time logit model. RESULTS: The prevalence of MHO was 3.7%. During the follow-up (mean 6.1 years, SD 2.0), none of the MHO reported cardiovascular events, diabetes or prediabetes; 26 subjects developed risk factors (53% high LDLc and 50% hypertension). At the 6 and 12-year of follow-up, the cumulative incidence of transition to unhealthy obesity was 44% (95% CI 31-59%) and 62% (95% CI 45-79%), the incidence of high LDLc was 23% (95% CI 13-37%) and 40% (95% CI 25-59%) and that of hypertension was 20% (95% CI 11-33%) and 30% (95% CI 17-48%). LDLc and duration of follow-up were independent predictors of the transition from MHO to unhealthy obesity [OR 1.038 (1.005-1.072) and 1.360 (1.115-1.659)]. CONCLUSIONS: Results suggest that (a) MHO individuals do not move over time forward diabetes/prediabetes but develop risk factors, such as hypertension and higher LDL c that worsen the cardiovascular prognosis; (b) LDLc and the flow of time independently predict the transition to unhealthy status. LEVEL OF EVIDENCE: Level III, cohort study.


Assuntos
Índice de Massa Corporal , Obesidade Metabolicamente Benigna/epidemiologia , Obesidade/epidemiologia , Adulto , Glicemia , LDL-Colesterol/sangue , Progressão da Doença , Feminino , Seguimentos , Humanos , Incidência , Masculino , Pessoa de Meia-Idade , Obesidade/sangue , Obesidade Metabolicamente Benigna/sangue , Prevalência , Fatores de Risco
4.
Front Pediatr ; 12: 1304451, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38410765

RESUMO

Objectives: Childhood obesity is a growing health problem and requires a tailored treatment. This study explored the sex differences in cardiovascular risk factors in children/adolescents with obesity and in response to a weight loss intervention. Methods: Five hundred and thirty-three children/adolescents with obesity and their parents underwent to a 3-months lifestyle intervention program. Tanner criteria were used to assess the pubertal stage. Before and after 3 months, anthropometric measurements, blood pressure (BP), and biochemical measurements were assessed. Results: Four hundred and forty five participants completed the treatment (age 12.4 ± 2.7 years, males 45.8%, prepubertal 29.2%, BMI z score 2.3 ± 0.2). In comparison to boys, prepubertal girls had higher values of BMI z score (2.4 ± 02 vs. 2.3 ± 0.2, p < 0.05), waist circumference z score (2.2 ± 0.3 vs. 2.0 ± 0.3, p < 0.05), HOMA-IR [2.9 (2.1-4.9) vs. 2.3(1.5-3.6), p < 0.01], prevalence of hypertransaminasemia (41.3% vs. 17.7%, p < 0.05) and lower levels of HDL cholesterol (46.2 ± 9.8 vs. 51.2 ± 10.5 mg/dl, p < 0.05). In the pubertal stage, boys had worse cardiometabolic risk profile than girls, including unfavourable measure of systolic BP (z score: 0.6 ± 1.0 vs. 0.3 ± 1.0, p < 0.01), fasting glucose (87.2 ± 6.1 vs. 84.8 ± 7.7 mg/dl, p < 0.01), ALT (26.9 ± 21.5 vs. 20.2 ± 10.6 U/L, p < 0.001) and uric acid (6.1 ± 1.9 vs. 5.0 ± 1.0 mg/dl, p < 0.001). After the lifestyle intervention, changes in BMI z score (p < 0.05) were higher in pubertal boys than pubertal girls. The systolic blood pressure decrease was greater in pubertal boys than in their female counterpart (Δ systolic BP: -7.2 mmHg in boys vs. -3.6 mmHg in girls, p < 0.05; Δ systolic BP z score: -0.6 in boys vs. -0.3 in girls, p < 0.05). LDL cholesterol showed an improvement only in boys, and ALT in the whole group. Conclusion: Our study showed that a short-term lifestyle intervention is more effective in reducing BMI z score and cardiovascular risk factors in pubertal boys than in their female counterparts. Further investigation is needed to deepen this gender difference, especially to develop a tailor-made intervention.

5.
ScientificWorldJournal ; 2012: 167520, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-22536122

RESUMO

The purpose of this paper is to verify the association between outcome measures of health-related quality of life (HRQoL) and disability, BMI, gender, and age. Adult obese patients were clustered using HRQoL (IWQoL-Lite) and disability (WHO-DAS II) scores into three groups: mild, moderate, and high. One-way ANOVA with Bonferroni post hoc test was used to evaluate differences in age and BMI between subjects from different clusters, contingency coefficient to test the relationship between cluster groups and gender. In total, 117 patients were enrolled: subjects with higher disability and HRQoL decrement were older and had higher BMI. Women were more likely to present moderate disability and reduction in HRQoL, while men more likely presented mild disability and HRQoL reduction. Our data further confirm the connection between disability and HRQoL, high BMI and older age. These data obtained with outcomes measures might better address rehabilitation programs.


Assuntos
Pessoas com Deficiência , Obesidade/fisiopatologia , Qualidade de Vida , Adulto , Análise de Variância , Índice de Massa Corporal , Análise por Conglomerados , Estudos Transversais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade
6.
Healthcare (Basel) ; 10(11)2022 Nov 17.
Artigo em Inglês | MEDLINE | ID: mdl-36421630

RESUMO

This pilot study compared the effects of two attentional focus strategies on fitness parameters and body composition in outpatients with obesity. This was a randomized, controlled study that enrolled 94 obese individuals and allocated them into an internal focus group (IF) or an external focus group (EF) while performing six weeks of a home-based training program. The home-based exercise program was the same for both groups except for the instructions that shifted the attention to an external or an internal condition. At the beginning and after the intervention period, participants were assessed for functional performance using the Functional Movement Screen (FMS), body balance using the Modified Balance Error Scoring System (M-BESS) and muscular strength with the Handgrip Strength Test (HST) and the Five-Repetition Sit-To-Stand (FRSTS) test. Concerning body composition and anthropometric parameters, the body mass index (BMI) and fat mass percentage (FM%) were calculated. Significant improvements, main interactions and effects of time and groups were highlighted in the EF group as compared to the IF group in FMS (35% vs. 21%), M-BESS (42% vs. 18%), HST (13% vs. 7%) and FRSTS (23% vs. 12%) measures, while FM% (5%) and BMI (6% vs. 5%) showed a similar improvement overtime (p < 0.001). In conclusion, our findings provide initial evidence that a 6-week training program performed following external focus instruction is able to promote significant enhancements in movement efficiency, balance and muscular strength as compared to an internal focus cue. Fitness coaches and therapists might consider integrating a specific attentional focus strategy when designing rehabilitation programs in subjects with obesity.

7.
Obes Surg ; 32(6): 1996-2002, 2022 06.
Artigo em Inglês | MEDLINE | ID: mdl-35384575

RESUMO

PURPOSE: Bariatric surgery (BS) is considered the most efficient treatment for severe obesity. International guidelines recommend multidisciplinary approach to BS (general practitioners, endocrinologists, surgeons, psychologists, or psychiatrists), and access to BS should be the final part of a protocol of treatment of obesity. However, there are indications that general practitioners (GPs) are not fully aware of the possible benefits of BS, that specialty physicians are reluctant to refer their patients to surgeons, and that patients with obesity choose self-management of their own obesity, including internet-based choices. There are no data on the pathways chosen by physicians and patients to undergo BS in the real world in Italy. METHODS: An exploratory exam was performed for 6 months in three pilot regions (Lombardy, Lazio, Campania) in twenty-three tertiary centers for the treatment of morbid obesity, to describe the real pathways to BS in Italy. RESULTS: Charts of 2686 patients (788 men and 1895 women, 75.5% in the age range 30-59 years) were evaluated by physicians and surgeons of the participating centers. A chronic condition of obesity was evident for the majority of patients, as indicated by duration of obesity, by presence of several associated medical problems, and by frequency of previous dietary attempts to weight loss. The vast majority (75.8%) patients were self-presenting or referred by bariatric surgeons, 24.2% patients referred by GPs and other specialists. Self-presenting patients were younger, more educated, more professional, and more mobile than patients referred by other physicians. Patients above the age of 40 years or with a duration of obesity greater than 10 years had a higher prevalence of all associated medical problems. CONCLUSIONS: The majority of patients referred to a tertiary center for the treatment of morbid obesity have a valid indication for BS. Most patients self-refer to the centers, with a minority referred by a GP or by specialists. Self-presenting patients are younger, more educated, more professional, and more mobile than patients referred by other physicians. Older patients and with a longer duration of obesity are probably representative of the conservative approach to BS, often regarded as the last resort in an endless story.


Assuntos
Cirurgia Bariátrica , Clínicos Gerais , Obesidade Mórbida , Cirurgiões , Adulto , Endocrinologistas , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Obesidade Mórbida/cirurgia
8.
Healthcare (Basel) ; 9(11)2021 Oct 27.
Artigo em Inglês | MEDLINE | ID: mdl-34828497

RESUMO

The aim of this study was to determine the effects of two different home-based training interventions on functional parameters and body composition in obese patients. Sixty-four obese patients were recruited at the IRCCS Istituto Auxologico Italiano and randomly assigned into a movement quality group (MQ) and a conventional training group (CT). In the MQ, the training protocol combined various stimuli based on whole-body movement patterns, mobility, motor control and diaphragmatic breathing. The CT included traditional bodyweight resistance-training exercises. All patients were tested for movement efficiency (Functional Movement Screen, FMS), postural control (Modified Balance Error Scoring System, M-BESS), breathing pattern (Total Faulty Breathing Scale, TFBS), muscular strength (Handgrip Strength Test, HST and Five Repetition Sit to Stand, FRSTS) and body composition (Waist Circumference, WC, Body Mass Index, BMI, Body fat mass percentage, Fat Mass) before and after a 6-week period of training. Significant interactions and main effects of time (p < 0.0001) were found in MQ compared to CT in the FMS, M-BESS and TFBS parameters, while muscular strength (HST, FRSTS) and body composition parameters improved similarly in both groups with a main effect of time (p < 0.05). These findings suggest that a 6-week movement quality training is effective in ameliorating postural control and movement efficiency with similar improvements in muscular strength and body composition compared with a mere traditional home-based training. Fitness coaches and practitioners might consider the MQ intervention as a valuable alternative to conventional training when treating obesity.

9.
Aging (Albany NY) ; 12(24): 24522-24534, 2020 12 22.
Artigo em Inglês | MEDLINE | ID: mdl-33353888

RESUMO

INTRODUCTION: The COVID-19 pandemic caused an increased mortality in nursing homes due to its quick spread and the age-related high lethality. RESULTS: We observed a two-month mortality of 40%, compared to 6.4% in the previous year. This increase was seen in both COVID-19 positive (43%) and negative (24%) residents, but 8 patients among those testing negative on the swab, tested positive on serological tests. Increased mortality was associated with male gender, older age, no previous vitamin D supplementation and worse "activities of daily living (ADL)" scores, such as Barthel index, Tinetti scale and S.OS.I.A. CONCLUSION: Our data confirms a higher geriatric mortality due to COVID-19. Negative residents also had higher mortality, which we suspect is secondary to preanalytical error and a low sensitivity of the swab test in poorly compliant subjects. Male gender, older age and low scores on ADL scales (probably due to immobility) are risk factors for COVID-19 related mortality. Finally, mortality was inversely associated with vitamin D supplementation. DESIGN: In this observational study, we described the two-month mortality among the 157 residents (age 60-100) of a nursing home after Sars-CoV-2 spreading, reporting the factors associated with the outcome. We also compared the diagnostic tests for Sars-CoV-2.


Assuntos
COVID-19/mortalidade , Casas de Saúde , SARS-CoV-2 , Atividades Cotidianas , Fatores Etários , Idoso , Idoso de 80 Anos ou mais , COVID-19/diagnóstico , COVID-19/terapia , COVID-19/virologia , Suplementos Nutricionais , Feminino , Humanos , Itália/epidemiologia , Masculino , Pessoa de Meia-Idade , Mortalidade , Pandemias , Sensibilidade e Especificidade , Fatores Sexuais , Vitamina D/administração & dosagem
10.
Acta Diabetol ; 56(6): 605-617, 2019 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-30603867

RESUMO

Achieving and maintaining recommended glycemic targets without causing adverse e ffects, including hypoglycemia, is challenging, especially in older patients with type 2 diabetes mellitus (T2DM). The introduction of dipeptidyl peptidase-4 (DPP-4) inhibitors, more than 10 years ago, has provided an alternative to conventional medications for the intensification of glucose-lowering treatment after failure of metformin monotherapy, and therefore, marked an important advance in the management of T2DM. By prolonging the activity of incretin hormones, DPP-4 inhibitors induce insulin release and decrease glucagon secretion in a glucose-dependent manner. This results in a more physiologic glycemic control as compared to that ensured by insulin secretagogues (sulfonylureas and glinides). Overall, DPP-4 inhibitors have a favorable safety profile and can be used without dose adjustments in older adults and in patients with mild renal impairment; they have a neutral effect on body weight and do not cause hypoglycemia by themselves. Safety issues, reported mainly in post-marketing surveillance programs and including cardiovascular outcomes and the risk of acute pancreatitis, are being extensively investigated. The aim of this review is to discuss the impact of DPP-4 inhibitors on the treatment of T2DM, after 10 years of experience, with an emphasis on diabetes care in Italy. We will first describe T2DM treatment in Italy and then provide an overview of the main findings from randomized controlled trials, real-world studies and post-marketing surveillance programs with DPP-4 inhibitors.


Assuntos
Diabetes Mellitus Tipo 2/tratamento farmacológico , Inibidores da Dipeptidil Peptidase IV/uso terapêutico , Hipoglicemiantes/uso terapêutico , Inibidores da Dipeptidil Peptidase IV/administração & dosagem , Inibidores da Dipeptidil Peptidase IV/efeitos adversos , Humanos , Hipoglicemiantes/administração & dosagem , Hipoglicemiantes/efeitos adversos
12.
Obes Facts ; 9(4): 251-8, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-27454447

RESUMO

OBJECTIVE: To assess the effect of a lifestyle intervention in lowering/normalizing blood pressure (BP) levels in hypertensive (controlled or not) obese patients. METHODS: In this prospective observational study, 490 obese hypertensive patients, 389 controlled (BP < 140/90 mm Hg; CH) and 101 uncontrolled (BP ≥ 140/90 mm Hg; UH) attended a 3-month lifestyle intervention. Before and after the intervention we assessed weight, waist circumference, fat mass, BP, metabolic and renal variables, and physical activity. A multivariate regression model was used to determine the predictors of BP changes. RESULTS: 18.9% of CH and 20.0% of UH were on ≥ 3 antihypertensive drugs. Weight change (average -4.9 ± 2.7%) was independent of the antihypertensive drugs employed. Systolic BP (SBP) decreased by 23 mm Hg and diastolic BP (DBP) by 9 mm Hg, in patients with UH most of whom (89%) normalized BP levels (in 49% after a weight loss < 5%). Age, gender, whole and central obesity, concomitance of type 2 diabetes, chronic renal disease, physical activity intensification, and pharmacological therapy did not affect BP lowering. In the regression analysis with SBP change as dependent variable, weight reduction (ß = 0.523, p = 0.005) and group (UH vs. CH, ß = -19.40, p = 0.0005) remained associated with SBP reduction. When DBP change was entered as dependent variable, baseline uric acid remained associated with DBP reduction (ß = 0.824, p < 0.05). CONCLUSION: Lifestyle interventions are useful for all obese hypertensive patients in most of whom a modest weight loss is sufficient to normalize BP levels avoiding the aggressive use of multiple antihypertensive drugs.


Assuntos
Anti-Hipertensivos/uso terapêutico , Pressão Sanguínea/fisiologia , Hipertensão/fisiopatologia , Obesidade/fisiopatologia , Redução de Peso/fisiologia , Idoso , Pressão Sanguínea/efeitos dos fármacos , Diabetes Mellitus Tipo 2/complicações , Feminino , Humanos , Hipertensão/complicações , Hipertensão/tratamento farmacológico , Estilo de Vida , Masculino , Pessoa de Meia-Idade , Obesidade/complicações , Obesidade/tratamento farmacológico , Estudos Prospectivos
13.
Obes Facts ; 8(2): 101-9, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26087840

RESUMO

BACKGROUND: Prevalence rates of cardiometabolic risk factors vary largely among overweight children. This study investigated the relationships between dietary habits and cardiometabolic health among obese children living in a city of Northern Italy. METHODS: Dietary habits were collected in 448 obese subjects aged 6-18 years, attending an obesity outpatient center in Milan. Anthropometry, blood pressure (BP), lipids, fasting and post-load glucose, and insulin were measured. Physical activity was assessed in adolescents using a questionnaire. RESULTS: Frequency of glucose intolerance, hypertension and dyslipidemia was 0.7%, 13% and 27.2%, respectively. Plausible reporters consumed more animal protein and sodium and less legumes than recommended in nutritional recommendations and adequate amounts of fiber mainly derived from whole grains. Subjects skipping breakfast had unhealthy diets and greater body fatness. After adjustment for confounders, waist/height and fasting glucose were associated with sodium intake (r =0.149 and r = 0.142, respectively; p < 0.05), 2-hour glucose with fiber (r = -0.172; p < 0.01), and BP with vegetable protein intake (systolic r = -0.120 (p < 0.05); diastolic r = -0.267 (p < 0.01)). Hypertensive children consumed less vegetable protein than normotensive children. CONCLUSIONS: The cardiometabolic health of obese children improves with vegetable protein and whole grain intake, whereas dysglycemia and adiposity increase with sodium intake.


Assuntos
Dieta , Dislipidemias/etiologia , Comportamento Alimentar , Intolerância à Glucose/etiologia , Hipertensão/etiologia , Obesidade/complicações , Tecido Adiposo/metabolismo , Adiposidade , Adolescente , Glicemia/metabolismo , Pressão Sanguínea , Criança , Dislipidemias/epidemiologia , Feminino , Intolerância à Glucose/epidemiologia , Humanos , Hipertensão/epidemiologia , Insulina/sangue , Itália/epidemiologia , Masculino , Obesidade/metabolismo , Fatores de Risco
15.
Obes Facts ; 5(1): 68-76, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-22433619

RESUMO

OBJECTIVE: To investigate the effects of a 3-month lifestyle intervention on insulin sensitivity and its related cardiometabolic factors in obese patients. METHODS: Anthropometry, body composition, oral glucose tolerance test, lipids, alanine aminotransferase, insulin sensitivity (insulinogenic index (ISI), homeostasis model assessment, ß-cell performance (disposition index)) were evaluated in 263 obese women and 93 obese men before and after 3 months of hypocaloric low fat/high protein diet associated with physical activity 30 min/day. RESULTS: Patients were divided into 3 groups according to the intervention-induced ISI changes: group 1 (decrease), group 2 (stability) and group 3 (increase). Insulin sensitivity and the disposition index were significantly higher before the intervention in group 1 than in group 3. BMI, waist circumference, and fat mass significantly decreased in groups 1 and 3 in both sexes. ß-cell performance decreased in group 1 and increased in group 3. Metabolic variables improved in group 3, whereas glucose levels increased in women of group 1. The post-intervention insulin sensitivity was lower in group 1 than in group 3. CONCLUSION: Lifestyle intervention induces changes in insulin sensitivity and metabolic factors that depend on the pre-intervention degree of insulin sensitivity. Weight loss leads to metabolic benefits in insulin-resistant, obese patients, whereas it may paradoxically worsen the metabolic conditions in the insulin-sensitive phenotype of obesity.


Assuntos
Dieta Redutora , Exercício Físico , Resistência à Insulina , Estilo de Vida , Obesidade/metabolismo , Redução de Peso/fisiologia , Programas de Redução de Peso , Tecido Adiposo/metabolismo , Adulto , Idoso , Glicemia/metabolismo , Composição Corporal , Índice de Massa Corporal , Restrição Calórica , Dieta com Restrição de Gorduras , Proteínas Alimentares/administração & dosagem , Feminino , Comportamentos Relacionados com a Saúde , Educação em Saúde , Humanos , Células Secretoras de Insulina/fisiologia , Masculino , Pessoa de Meia-Idade , Obesidade/terapia , Fenótipo , Fatores Sexuais , Circunferência da Cintura
16.
Obesity (Silver Spring) ; 19(8): 1684-9, 2011 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-21273999

RESUMO

We assessed (i) the association between early arterial disease and factors linked to adiposity, dietary habits, and family in a young cohort of 151 obese children and adolescents with less than or equal to one cardiovascular (CV) risk factor, (ii) whether in subjects with carotid calcifications there was an imbalance of calcium-phosphorus homeostasis. Measurement included: carotid ultrasound, oral glucose tolerance test, anthropometry, body composition, dietary history, white blood cells count, lipids, uric acid, adiponectin, insulin, C-reactive protein, plasminogen activator inhibitor 1 (PAI-1), 25-hydroxyvitamin D, parathyroid hormone (PTH), calcium and phosphorus. Obese children with carotid artery intima media thickness (cIMT) values >75° percentile (0.55 mm), compared to those with lower cIMT, were more obese, more often pubertal and had higher prevalence of family history of CV disease (CVD) (P < 0.05), higher plasma PAI-1 and uric acid (P < 0.001) and lower adiponectin (P < 0.05) and high-density lipoprotein (HDL) cholesterol levels (P < 0.05). After adjustment for sex, age, puberty, obesity, and insulin levels, only PAI-I remained significantly different between the two groups (10.9 (7.2-29.8) vs. 6.2 (4.3-10.6) ng/ml, P < 0.001). Dietary intake did not affect cIMT values. Eight percent of subjects showed nonatherosclerotic carotid calcifications with patchy pattern. These children had a worse lipid profile (P < 0.05) and higher plasma PTH levels (48.6 ± 21.5 vs 38.5 ± 16.9 pg/ml, P < 0.05) that were inversely associated with 25-hydroxyvitamin D levels (r = 0.245, P < 0.01). Present results suggest that (i) several adiposity-related factors may play a role in promoting the development of early arterial diseases in young subjects with a benign phenotype of obesity, (ii) a PTH rise resulting from a subclinical imbalance in calcium-phosphorus homeostasis may affect the biological process of vascular calcifications.


Assuntos
Aterosclerose/etiologia , Cálcio/metabolismo , Obesidade/complicações , Inibidor 1 de Ativador de Plasminogênio/sangue , Túnica Íntima/patologia , Adiponectina/sangue , Adolescente , Aterosclerose/sangue , Aterosclerose/patologia , Biomarcadores , Artérias Carótidas/metabolismo , Artérias Carótidas/patologia , Criança , HDL-Colesterol/sangue , Família , Feminino , Humanos , Masculino , Obesidade/sangue , Obesidade/patologia , Hormônio Paratireóideo/sangue , Fenótipo , Fósforo/metabolismo , Puberdade , Fatores de Risco , Túnica Íntima/metabolismo , Ácido Úrico/sangue , Vitamina D/análogos & derivados , Vitamina D/sangue
17.
Obes Facts ; 4(1): 27-33, 2011.
Artigo em Inglês | MEDLINE | ID: mdl-21372608

RESUMO

OBJECTIVE: The effects of metformin on adiponectin production are controversial and have never been investigated in human adipose tissue. We analysed whether metformin modulates, in vitro and in vivo, gene expression, protein content, and secretion of adiponectin. METHODS: For the in vitro study, subcutaneous adipose tissue (SAT) and visceral adipose tissue (VAT) samples from 5 non-diabetic obese patients were collected. For the in vivo investigation, 22 obese patients were randomly assigned to metformin+lifestyle (ML) or placebo+lifestyle (PL) intervention. SAT specimens and blood samples were collected before and after the intervention in both groups. RESULTS: In in vitro experiments, treatment with metformin increased the expression and secretion of adiponectin in SAT, but not in VAT explants. In the in vivo study, a significant increase in adiponectin and a decreased expression of a macrophage activation marker (CD68) were observed only in SAT of the ML group. CONCLUSION: These results demonstrate that metformin is able to up-regulate adiponectin gene expression, both in vivo and in vitro, and to stimulate adiponectin protein secretion from human SAT in vitro. It could be hypothesised that metformin-induced adiponectin increase within adipose tissue may have an unexpected role in the reduction of local inflammation.


Assuntos
Adiponectina/metabolismo , Tecido Adiposo/metabolismo , Hipoglicemiantes/farmacologia , Metformina/farmacologia , Obesidade/metabolismo , Tecido Adiposo/efeitos dos fármacos , Adulto , Células Cultivadas , Feminino , Humanos , Gordura Intra-Abdominal/efeitos dos fármacos , Gordura Intra-Abdominal/metabolismo , Estilo de Vida , Gordura Subcutânea/efeitos dos fármacos , Gordura Subcutânea/metabolismo
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