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Avaliação dos efeitos do consumo de nozes (Juglans regia L.) de origem nacional na redução de fatores de risco relacionados com doenças cardiovasculares
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| 37010 | 1.18 MB | Adobe PDF |
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Abstract(s)
Objetivo: Avaliar os efeitos do consumo de nozes de origem nacional na redução de fatores de risco relacionados com doenças cardiovasculares.
Metodologia: O trabalho experimental avaliou o efeito da ingestão de nozes no perfil bioquímico, antropométrico e na tensão arterial. O ensaio contou com 24 voluntários do género feminino (n=15) e masculino (n=9) do universo da Universidade Fernando Pessoa. Num período de 45 dias, todos os participantes consumiram 25 gramas de miolo de noz diariamente e foram instruídos a seguir uma dieta normal sem alterações durante o período experimental. Antes e após o tratamento foram colhidas amostras de sangue para determinar o índice glicémico e o perfil lipídico e a medida da tensão arterial. Ainda foram feitas medições antropométricas para determinar o Índice de Massa Corporal.
Resultados: A ingestão de nozes mostrou que 75% dos participantes tiveram uma redução nos níveis de glicemia, 63% nos níveis de ureia, 58% nos níveis de ácido úrico, 58% nos níveis de colesterol total, 46% nos índices de lipoproteínas de baixa densidade, 50% nos níveis de triglicéridos, 33% nos níveis de alanina aminotransferase e 63% dos níveis de aspartato aminotransferase. Verificaram-se aumentos nos índices de lipoproteínas de alta densidade em 42% dos participantes. No que respeita ao Índice de Massa Corporal verificou-se um decréscimo em 54% dos participantes e de 63% e 54%, respetivamente, na tensão arterial sistólica e diastólica. Verificou-se ainda que os efeitos da ingestão de nozes variaram em função do género e da idade. A dose-resposta entre a ingestão de nozes e os parâmetros avaliados mostraram uma diferença estatisticamente significativa (p<0,05) na tensão arterial sistólica e diastólica e nos níveis de aspartato aminotransferase.
Conclusão: O consumo de nozes previne e reduz fatores de risco associados às doenças cardiovasculares. Os seus principais determinantes da redução são a dose de nozes, o tempo de ingestão e a origem. Verificou-se ainda que, o género feminino, retira maiores benefícios do que o género masculino na ingestão de nozes. Destaca-se a necessidade de mais investigação para obter resultados mais conclusivas.
Aim: To evaluate the effects of consuming nuts of national origin on reducing risk factors related to cardiovascular diseases. Methodology: The experimental study evaluated the effect of eating walnuts on biochemical and anthropometric profiles and blood pressure. The trial involved 24 female (n=15) and male (n=9) volunteers from the University of Fernando Pessoa. Over a period of 45 days, all participants consumed 25 grams of walnut kernels daily and were instructed to follow a normal diet without changes during the experimental period. Before and after treatment, blood samples were taken to determine the glycemic index and lipid profile, and blood pressure was measured. Anthropometric measurements were also taken to determine Body Mass Index. Results: Nut intake showed that 75 per cent of participants had a reduction in blood glucose levels, 63 per cent in urea levels, 58 per cent in uric acid levels, 58 per cent in total cholesterol levels, 46 per cent in low-density lipoprotein indices, 50 per cent in triglyceride levels, 33 per cent in alanine aminotransferase levels and 63 per cent in aspartate aminotransferase levels. There were increases in high-density lipoprotein indices in 42 per cent of the participants. With regard to Body Mass Index, there was a decrease in 54 per cent of the participants and a decrease of 63 per cent and 54 per cent, respectively, in systolic and diastolic blood pressure. It was also found that the effects of nut intake varied according to gender and age. The dose-response between nut intake and the parameters assessed showed a statistically significant difference (p<0.05) in systolic and diastolic blood pressure and aspartate aminotransferase levels. Conclusion: Nut consumption prevents and reduces risk factors associated with cardiovascular disease. The main determinants of the reduction are the dose of nuts, the time of intake and the origin. It was also found that women derive greater benefits from eating walnuts than men. Further research is needed to obtain more conclusive results.
Aim: To evaluate the effects of consuming nuts of national origin on reducing risk factors related to cardiovascular diseases. Methodology: The experimental study evaluated the effect of eating walnuts on biochemical and anthropometric profiles and blood pressure. The trial involved 24 female (n=15) and male (n=9) volunteers from the University of Fernando Pessoa. Over a period of 45 days, all participants consumed 25 grams of walnut kernels daily and were instructed to follow a normal diet without changes during the experimental period. Before and after treatment, blood samples were taken to determine the glycemic index and lipid profile, and blood pressure was measured. Anthropometric measurements were also taken to determine Body Mass Index. Results: Nut intake showed that 75 per cent of participants had a reduction in blood glucose levels, 63 per cent in urea levels, 58 per cent in uric acid levels, 58 per cent in total cholesterol levels, 46 per cent in low-density lipoprotein indices, 50 per cent in triglyceride levels, 33 per cent in alanine aminotransferase levels and 63 per cent in aspartate aminotransferase levels. There were increases in high-density lipoprotein indices in 42 per cent of the participants. With regard to Body Mass Index, there was a decrease in 54 per cent of the participants and a decrease of 63 per cent and 54 per cent, respectively, in systolic and diastolic blood pressure. It was also found that the effects of nut intake varied according to gender and age. The dose-response between nut intake and the parameters assessed showed a statistically significant difference (p<0.05) in systolic and diastolic blood pressure and aspartate aminotransferase levels. Conclusion: Nut consumption prevents and reduces risk factors associated with cardiovascular disease. The main determinants of the reduction are the dose of nuts, the time of intake and the origin. It was also found that women derive greater benefits from eating walnuts than men. Further research is needed to obtain more conclusive results.
Description
Trabalho Complementar apresentado à Universidade Fernando Pessoa como parte dos requisitos para obtenção do grau de licenciada em Ciências da Nutrição
Keywords
Aterosclerose Doenças cardiovasculares Dieta Dislipidemia Hipertensão arterial Medições antropométricas Nozes Anthropometric measurements Atherosclerosis Cardiovascular disease Diet Dyslipidemia Hypertension Nuts