Navegando por Autor "Friedman, Rogério"

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Effects of 5 % weight loss through diet or diet plus exercise on cardiovascular parameters of obese: a randomized clinical trial
(European Journal of Nutrition, 2013) Fayh, Ana Paula Trussardi; Lopes, André Luiz; Silva, Antônio Marcos Vargas da; Reischak-Oliveira, Álvaro; Friedman, Rogério
Objective: To evaluate the effects of 5 % weight loss, through diet only or diet plus exercise, on lipid profile, inflammation and endothelial function in obese individuals. Methods: In this randomized clinical trial, 48 obese individuals were randomized to either a diet only group (DI) or a diet and exercise group (DI + EXE). Treatment was maintained until 5 % of the initial body weight was lost. At baseline and upon completion, the following parameters were analyzed: total cholesterol and fractions, triglycerides, fibrinogen, von Willebrand factor, high-sensitive C-reactive protein (hs-CRP) and endothelial function (brachial artery flow-mediated vasodilation—FMD). Results: Thirteen individuals dropped out before completing the weight loss intervention. The median time required for reduction of 5 % of initial body weight was 79.7 days for the DI group and 65.9 days for the DI + EXE group (P = 0.16). In both DI (n = 18) and DI + EXE (n = 17), total cholesterol (−15.8 ± 4.8 and −10.5 ± 4.9 mg/dL, respectively), triglycerides (−33.8 ± 10.0 and −39.4 ± 10.3 mg/dL, respectively) and hs-CRP (−1.35 ± 0.41 and −0.45 ± 0.43 mg/L, respectively) decreased significantly, and in a similar response (repeated measures ANOVA). Weight loss did not change significantly the fibrinogen and FMD in both groups. Conclusion: A 5 % weight loss improves lipid profile and reduces inflammation in obese individuals. Endothelial function did not change significantly. Weight loss has a significant impact on these cardiovascular risk factors, and this is independent of physical training
Effects of l-arginine supplementation on blood flow, oxidative stress status and exercise responses in young adults with uncomplicated type I diabetes
(European Journal of Nutrition, 2013) Fayh, Ana Paula Trussardi; Krause, Mauricio; Rodrigues-Krause, Josianne; Ribeiro, Jerri Luiz; Ribeiro, Jorge Pinto; Friedman, Rogério; Moreira, José Cláudio Fonseca; Reischak-Oliveira, Alvaro
Background and aims: Vascular disease is the principal cause of death and disability in patients with diabetes, and endothelial dysfunction seems to be the major cause in its pathogenesis. Since L-arginine levels are diminished in conditions such as type 1 and type 2 diabetes, in this work we aimed to verify the effects of L-arginine supplementation (7 g/day) over the endothelial function and oxidative stress markers in young male adults with uncomplicated type 1 diabetes. We also investigated the influences of L-arginine administration on vascular/oxidative stress responses to an acute bout of exercise. Methods: Ten young adult male subjects with uncomplicated type 1 diabetes and twenty matched controls volunteered for this study. We analysed the influence of L-arginine supplementation (7 g/day during 1 week) over lower limb blood flow (using a venous occlusion plethysmography technique), oxidative stress marker (TBARS, Carbonyls), anti-oxidant parameters (uric acid and TRAP) and total tNOx in rest conditions and after a single bout of submaximal exercise (VO2 at 10 % below the second ventilatory threshold). Data described as mean ± standard error (SE). Alpha level was P < 0.05. Results: Glycaemic control parameters were altered in type 1 diabetic subjects, such as HbA1c (5.5 ± 0.03 vs. 8.3 ± 0.4 %) and fasted glycaemia (94.8 ± 1.4 vs. 183 ± 19 mg/dL). Oxidative stress/damage markers (carbonyls and TBARS) were increased in the diabetic group, while uric acid was decreased. Rest lower limb blood flow was lower in type 1 diabetic subjects than in healthy controls (3.53 ± 0.35 vs. 2.66 ± 0.3 ml 100 ml−¹ min−¹). L-Arginine supplementation completely recovered basal blood flow to normal levels in type 1 diabetics’ subjects (2.66 ± 0.3 to 4.74 ± 0.86 ml 100 ml−¹ min−¹) but did not interfere in any parameter of redox state or exercise. Conclusion: Our findings highlight the importance of L-arginine for the improvement of vascular function in subjects with diabetes, indicating that L-arginine supplementation could be an essential tool for the treatment for the disease complications, at least in non-complicated diabetes. However, based on our data, it is not possible to draw conclusions regarding the mechanisms by which L-arginine therapy is inducing improvements on cardiovascular function, but this important issue requires further investigations
Effects of n-3 fatty acids and exercise on oxidative stress parameters in type 2 diabetic: a randomized clinical trial
(Journal of the International Society of Sports Nutrition, 2018-04) Fayh, Ana Paula Trussardi; Sapata, Katiuce Borges; Cunha, Giovani Santos; Krause, Mauricio; Rocha, Ricardo; Bittencourt Júnior, Paulo Ivo Homem de; Moreira, José Cláudio Fonseca; Friedman, Rogério; Rossato, Juliane da Silva; Fernandes, Jõao Roberto; Oliveira, Alvaro Reischak de
Background: The relationship between diabetes and oxidative stress has been previously reported. Exercise represents a useful non-pharmacological strategy for the treatment in type 2 diabetic (T2DM) patients, but high intensity exercise can induce a transient inflammatory state and increase oxidative stress. Nutritional strategies that may contribute to the reduction of oxidative stress induced by acute exercise are necessary. The aim of this study was to examine if n-3 PUFA supplementation intervention can attenuate the inflammatory response and oxidative stress associated with high intensity exercise in this population. As a primary outcome, lipoperoxidation measurements (TBARS and F2-isoprostanes) were selected. Methods: Thirty T2DM patients, without chronic complications, were randomly allocated into two groups: placebo (gelatin capsules) or n-3 PUFA (capsules containing 180 mg of eicosapentaenoic acid and 120 mg of docosahexaenoic acid). Blood samples were collected fasting before and after 8 weeks supplementation. In the beginning and at the end of protocol, an acute exercise was performed (treadmill), and new blood samples were collected before and immediately after the exercise for measurements of oxidative stress and high-sensitivity C-reactive protein (hs-CRP). Results: After the supplementation period, a decrease in triglycerides levels was observed only in n-3 PUFA supplementation group (mean difference and 95% CI of 0.002 (0.000–0.004), p = 0.005). Supplementation also significantly reduced TRAP levels after exercise (mean difference and 95% CI to 9641 (− 20,068–39,351) for − 33,884 (− 56,976 - -10,793), p = 0.004, Cohen’s d effect size = 1.12), but no significant difference was observed in n-3 PUFA supplementation group in lipoperoxidation parameters as TBARS (mean difference and 95% CI to − 3.8 (− 10–2.4) for − 2.9 (− 1.6–7.4) or F2-isoprostanes (mean difference and 95% CI -0.05 (− 0.19–0.10) for − 0.02 (− 0.19–0.16), p > 0.05 for both. Conclusion: PUFA n-3 supplementation reduced triglycerides as well as TRAP levels after exercise, without a significant effect on inflammatory and oxidative stress markers
Estado nutricional e hormônios relacionados com o apetite em crianças e adolescentes com leucemia durante a fase de indução da quimioterapia
(2016-11-10) Gomes, Camila de Carvalho; Fayh, Ana Paula Trussardi; ; http://lattes.cnpq.br/0049770583345803; ; http://lattes.cnpq.br/1828493411721223; Friedman, Rogério; ; Lima, Severina Carla Vieira Cunha; ; http://lattes.cnpq.br/8818927353248941
O câncer corresponde a um grupo de várias doenças que têm em comum a proliferação descontrolada de células anormais e que pode ocorrer em qualquer local do organismo. Os tumores mais frequentes na infância e na adolescência são as Leucemias, e a Leucemia Linfoblástica Aguda (LLA) é a mais prevalente. A desnutrição evidenciada nesses pacientes está relacionada à síndrome da anorexiacaquexia desencadeada pela doença, mas também nas alterações do apetite, que ocorrem durante o tratamento quimioterápico e interferem no estado nutricional bem como na resposta a terapia antineoplásica. Embora seja reconhecida a possível influência dos hormônios relacionados ao apetite sobre as alterações no consumo alimentar de pacientes com LLA durante o tratamento quimioterápico, poucos estudos na literatura investigaram as alterações hormonais em pacientes com câncer infantojuvenil. Diante disso, o objetivo desse estudo foi avaliar o estado nutricional e os níveis dos principais hormônios relacionados ao apetite em crianças e adolescentes portadoras de LLA na fase de indução do tratamento quimioterápico. Para atingir o objetivo, foram acompanhadas 14 crianças ou adolescentes com o diagnóstico de LLA durante os 28 dias do ciclo de indução do tratamento quimioterápico. No momento basal (antes do início da quimioterapia), na metade e ao final desse ciclo foram realizadas avaliações de estado nutricional antropométrico, do consumo alimentar e dietético sob a forma de registro alimentar pesado, e dos marcadores bioquímicos e hormonais. Foram avaliados os seguintes hormônios relacionados ao apetite: leptina, grelina, insulina e cortisol. A maioria dos pacientes apresentava eutrofia no início do tratamento, e este diagnóstico não foi alterado de forma significativa durante o ciclo de indução. O consumo alimentar e dietético apresentou um aumento ao longo do ciclo, especialmente em relação ao consumo de proteínas e lipídeos do início até o final do tratamento. Em relação aos parâmetros bioquímicos, observou-se aumento significativo nos parâmetros das plaquetas e na transaminase glutâmica pirúvica, assim como redução significativa nas concentrações de glicemia, creatinina e o sódio. Sobre os hormônios relacionados ao apetite, registrou-se alteração estatisticamente significativa apenas na concentração de grelina, que apresentou um aumento entre os momentos basal e meio do ciclo (p=0,027), mas não do meio para o final do ciclo. Em conclusão, o período de indução do tratamento da LLA provocou um aumento no consumo de energia e nutrientes, assim como um aumento na concentração de grelina, mas sem repercussão sobre o estado antropométrico dos pacientes ou nos outros hormônios relacionados ao apetite.
Impact of weight loss with or without exercise on abdominal fat and insulin resistance in obese individuals: a randomized clinical trial
(British Journal of Nutrition, 2013-01) Fayh, Ana Paula Trussardi; Lopes, André Luiz; Fernandes, Pablo Rober; Oliveira, Alvaro Reischak; Friedman, Rogério
Evidence supports an important contribution of abdominal obesity and inflammation to the development of insulin resistance (IR) and CVD. Weight loss in obese individuals can reduce inflammation and, consequently, IR, but the role of training remains unclear. The aim of this study was to evaluate the effects of body weight reduction with and without exercise over abdominal fat tissue (primary outcome) and IR. In this randomised clinical trial, forty-eight obese individuals (age 31·8 (SD 6·0) years, BMI 34·8 (SD 2·7) kg/m2 ) were randomised to either a diet-only group (DI) or a diet and exercise group (DI þ EXE). Treatment was maintained until 5 % of the initial body weight was lost. At baseline and upon completion, the following parameters were analysed: biochemical parameters such as glycaemia and insulin for the determination of homeostasis model assessment of insulin resistance (HOMA-IR), high-sensitivity C-reactive protein (hs-CRP) and abdominal computed tomography for the determination of visceral and subcutaneous adipose tissue. A total of thirteen individuals dropped out before completing the weight-loss intervention and did not repeat the tests. In both the DI (n 18) and DI þ EXE (n 17) groups, we observed significant and similar decreases of visceral adipose tissue (difference between means: 7·9 (95 % CI 29·5, 25·2) cm2 , P¼0·36), hs-CRP (difference between means: 20·06 (95 % CI 20·19, 0·03) mg/l, P¼0·39) and HOMA (difference between means: 20·04 (95 % CI 20·17, 0·08), P¼0·53). In the present study, 5 % weight loss reduced abdominal fat and IR in obese individuals and exercise did not add to the effect of weight loss on the outcome variables
The effects of diet- and diet plus exercise-induced weight loss on basal metabolic rate and acylated ghrelin in grade 1 obese subjects
(Diabetes, Metabolic Syndrome and Obesity: targets and therapy, 2013-11) Fayh, Ana Paula Trussardi; Lopes, André; Campos, Luisa Souza; Teixeira, Bruno; Carteri, Randhall Kreismann; Ribeiro, Jerri; Friedman, Rogério; Oliveira, Álvaro
Background: Diet and exercise are often prescribed as primary intervention regarding obesity-related disorders. Additionally, recent studies have shown beneficial effects of weight loss through diet and exercise in ghrelin concentrations in obese subjects. The aim of this study was to evaluate the effects of a 5% weight loss on lipid profile, resting metabolic rate (RMR), and acylated ghrelin (AG) using two different methods of intervention (diet or diet plus exercise). Materials and methods: Eighteen subjects (twelve women and six men) aged 20–40 years with a body mass index of 30–34.9 kg/m2 (grade 1 obesity) were randomized into two intervention groups: diet (n=9) or diet plus exercise (n=9). Both groups underwent treatment until 5% of the initial body weight was lost. At baseline and upon completion, RMR and AG were analyzed. Results: Both groups showed a significant decrease in body fat percentage and fat mass. The dietplus-exercise group showed a decrease in AG (pre: 54.4±25.3 pg/mL and post: 33.2±19.1 pg/mL) and an increase in RMR (pre: 1,363±379 kcal/day, post: 1,633±223 kcal/day). Conclusion: These data suggest that diet plus exercise induced weight loss and had beneficial effects on AG concentration and RMR, essential factors to ensure the benefits of a weight-loss program

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Navegando por Autor "Friedman, Rogério"