Objective: In obese patients, we hypothesized physical exercise (PE) to affect lipids rather through its intrahepatic fat accumulation-lowering effect, associated with a decrease of total body fat (Fat%) and even weight (Mass), than through muscle work and an improvement of physical fitness. Design and setting: Thirty seven sedentary, non-diabetic women (BMI median 34.8 kg/m2) from our out- patient department were tested. Elimination criteria: recent weight reduction, lipid-influencing or heart rate-modifying medication. Interventions: PE protocol: 60 min supervised trainings, intensity at 65% of VO2max, modified by the Clamped Heart Rate test. Median (M) of total training hours was 34 during 115 days . Main Outcome Measurements: an effect of PE on total cholesterol (CH), triacylglycerols, HDL- cholesterol (HDL-C), LDL-cholesterol (LDL-C), index of atherogenity (IA), atherogenic index of plasma (AIP), maximum peak oxygen consumption (VO2max), Mass, body mass index (BMI), waist circumference (Waist) and Fat%. Results: Statistically significant differences at start (_s) and at the end (_e) of PE (p<0.05): AIP -0.049, Mass -3.6 (kg), BMI -1.7 (kg/m2), Waist -2.5 (cm), Fat% -2.5, VO2max 2.92 (l.min-1.kg-1), W 16.4 (Watt). Correlation coefficients, Pearson's between Gaussian distributed (Gd-v) variables and...

Objective: In obese patients, we hypothesized physical exercise (PE) to affect lipids rather through its intrahepatic fat accumulation-lowering effect, associated with a decrease of total body fat (Fat%) and even weight (Mass), than through muscle work and an improvement of physical fitness. Design and setting: Thirty seven sedentary, non-diabetic women (BMI median 34.8 kg/m2) from our out- patient department were tested. Elimination criteria: recent weight reduction, lipid-influencing or heart rate-modifying medication. Interventions: PE protocol: 60 min supervised trainings, intensity at 65% of VO2max, modified by the Clamped Heart Rate test. Median (M) of total training hours was 34 during 115 days . Main Outcome Measurements: an effect of PE on total cholesterol (CH), triacylglycerols, HDL- cholesterol (HDL-C), LDL-cholesterol (LDL-C), index of atherogenity (IA), atherogenic index of plasma (AIP), maximum peak oxygen consumption (VO2max), Mass, body mass index (BMI), waist circumference (Waist) and Fat%. Results: Statistically significant differences at start (_s) and at the end (_e) of PE (p<0.05): AIP -0.049, Mass -3.6 (kg), BMI -1.7 (kg/m2), Waist -2.5 (cm), Fat% -2.5, VO2max 2.92 (l.min-1.kg-1), W 16.4 (Watt). Correlation coefficients, Pearson's between Gaussian distributed (Gd-v) variables and...

Submitted by Luciana Ferreira (lucgeral@gmail.com) on 2016-06-02T13:07:50Z No. of bitstreams: 2 Dissertação - Polliana Conceição Garcia - 2015.pdf: 2210434 bytes, checksum: 2904fb672abe80d906ef6e87a1f9d87d (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) / Approved for entry into archive by Luciana Ferreira (lucgeral@gmail.com) on 2016-06-02T13:09:30Z (GMT) No. of bitstreams: 2 Dissertação - Polliana Conceição Garcia - 2015.pdf: 2210434 bytes, checksum: 2904fb672abe80d906ef6e87a1f9d87d (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) / Made available in DSpace on 2016-06-02T13:09:30Z (GMT). No. of bitstreams: 2 Dissertação - Polliana Conceição Garcia - 2015.pdf: 2210434 bytes, checksum: 2904fb672abe80d906ef6e87a1f9d87d (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) Previous issue date: 2015-12-18 / Fundação de Amparo à Pesquisa do Estado de Goiás - FAPEG / Several clinical and epidemiological studies have shown that the association between obesity and cardiovascular risk begins early in childhood, which makes crucial the identification and control of childhood obesity associated changes as strategies to prevent adult cardiovascular diseases. The present study aimed to evaluate the relationship between the degree of adiposity and the presence of cardiovascular risk factors in children. Additionally, we investigated possible associations between anthropometric variables and blood pressure values, lipid profile components, blood glucose levels and atherogenic index. The study was conducted with children of both sexes and aged 6 to 10 years, enrolled in a public educational institution in the city of Jataí-GO. We collected anthropometric measures, blood pressure values and blood samples for fasting glucose and lipid profile (enzymatic methods) determination. Children were distributed into 3 groups: control (n=51), overweight (n=29) and obese (n=36). The daily time devoted on sedentary activities was higher, while the time spent on physical activities was lower in obese children, when compared to the control group. obese children had also higher levels of triglycerides (TG), very low density lipoprotein cholesterol (VLDL-C), total cholesterol/ high-density lipoprotein cholesterol (CT/HDL-C) and TG/HDL, along with decreased HDL-C, when compared to children with normal weight. There was a positive association between anthropometric indicators (body mass índex, waist circumference, waist-to-height ratio e skinfold thicknesses) and the variables: systolic blood pressure, diastolic blood pressure, TGs, HDL-C, VLDL-C and atherogenic index. HDL-C correlated negatively with the anthropometric variables. We conclude that increased adiposity in childhood contributes to the occurrence of cardiovascular risk factors, including high blood pressure, changes in lipid profile and increase in atherogenic indexes. / Diversos estudos clínicos e epidemiológicos têm revelado que a associação existente entre obesidade e risco cardiovascular inicia-se durante a infância, o que torna imprescindível a identificação e o controle das alterações associadas à obesidade infantil como estratégia na prevenção de doenças cardiovasculares na fase adulta. O objetivo do presente estudo foi avaliar a relação entre o grau de adiposidade e a presença de fatores de risco cardiovasculares em crianças. Adicionalmente, investigamos possíveis associações entre variáveis antropométricas e valores de pressão arterial, componentes do perfil lipídico, níveis glicêmicos e índices aterogênicos. O estudo foi realizado com crianças de ambos os sexos e com idade entre 6 e 10 anos, matriculadas em uma instituição de ensino pública do município de Jataí-GO. Foram coletadas medidas antropométricas, valores de pressão arterial e amostras de sangue para testes de glicemia de jejum e perfil lipídico (métodos enzimáticos). As crianças foram distribuídas em 3 grupos: controle (n=51), sobrepeso (29) e obeso (n=36). Nossos resultados demonstraram que o tempo diário dedicado a atividades sedentárias foi maior, enquanto o tempo gasto em atividades físicas foi menor nas crianças obesas, quando comparadas ao grupo controle. As crianças obesas apresentaram ainda valores significativamente maiores de triglicérides (TG), colesterol de lipoproteínas de densidade muito baixa (VLDL-C), colesterol total/colesterol de lipoproteína de alta densidade (CT/HDL-C) e TG/HDL-C, além de diminuição do HDL-C em relação às crianças com peso normal. Houve associação positiva entre os indicadores antropométricos (índice de massa corporal, circunferência da cintura, razão cintura-estatura e dobras cutâneas) e as variáveis: pressão arterial sistólica, pressão arterial diastólica, TGs, HDL-C, VLDL-C e índices aterogênicos, enquanto o HDL-C correlacionou-se negativamente com as variáveis antropométricas. Concluímos que o excesso de tecido adiposo na infância contribui para a ocorrência de fatores de risco cardiovasculares, como a elevação da pressão arterial, o perfil lipídico inadequado e o aumento de índices aterogênicos.