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1.
Nutr. hosp ; 27(3): 929-935, mayo-jun. 2012.
Article in English | IBECS | ID: ibc-106229

ABSTRACT

Background: The prevalence of overweight individuals has increased in recent years. Moreover, the importance of a healthy diet is associated with the practice of physical activity and attempt to verify the achievement of physical exercise influences on food choice. However, it relationship between food intake and physical activity have not been studied. Aim: To evaluate if the period in which the trainings are conducted, morning and nocturne, interfere qualitatively and quantitatively in food consumption as well as verify possible associations between anthropometric profiles and dietary habits. Methods: We collected data from 33 adult volunteers, between men and women, practitioners of bodybuilding. Results: A total of 33 volunteers were interviewed (18 (54.5%) were men and 15 (45.5%) were women). Regarding anthropometric data, it turns out that that the volunteers of the two periods had similar characteristics, differentiating only weight. The consumption of nutritional supplements was observed in 30.77% of the practitioners in the morning period vs. 35% for the nocturne. Considering macronutrient intake, there was a significant difference in the consumption of protein between the periods. The consumption during nocturne period was greater (126 ± 5% of the daily requirement) than the morning period (115.7 ± 2%). As for micro-nutrients, calcium intake was greater among men when compared to women. There was a positive correlation between the BMI, and arm circumference for practitioners of the morning period. Conclusion: This study show that the practitioners who train in the morning have quietly better eating habits than those in the nocturne period, however both are inappropriate (AU)


Antecedentes: La prevalencia de individuos con sobrepeso ha aumentado en los últimos años. Además, la importancia de una dieta saludable se asocia con la práctica de actividad física y los intentos de lograr la realización de la esta actividad influyen en la elección de la dieta. Sin embargo, la relación entre la ingesta dietética y la actividad física no se ha estudiado. Objetivo: Evaluar si el periodo en que se realiza el entrenamiento, diurno y nocturno, interfiere cualitativa y cuantitativamente en el consumo de alimentos, así como comprobar posibles asociaciones entre los perfiles antropométricos y los hábitos dietéticos. Métodos: Recogimos los datos de 33 adultos voluntarios, hombres y mujeres, culturistas. Resultados: se entrevistó a un total de 33 voluntarios (18 (54,5%) hombres y 15 (45,5%) mujeres). Con respecto a los datos antropométricos, los voluntarios de ambos periodos tenían características similares, diferenciándose sólo por el peso. El consumo de suplementos nutritivos se observó en el 30,77% de los culturistas de la mañana frente al 35% de los de la noche. Con respecto al consumo de macronutrientes, hubo una diferencia significativa en el consumo de proteínas entre ambos periodos. El consumo durante el periodo de la noche fue mayor (126 ± 5% de las necesidades diarias) que el de la mañana (115,7 ± 2%). Para los micronutrientes, el consumo de calcio fue superior entre los hombres en comparación con las mujeres. Hubo una correlación positiva entre el IMC y la circunferencia del brazo en los culturistas de la mañana. Conclusión: Este estudio demuestra que los culturistas que se entrenan durante el día tienen hábitos dietéticos más saludables que aquellos que lo hacen por la noche, aunque en ambos son inapropiados (AU)


Subject(s)
Humans , Male , Female , Body Mass Index , Dietary Fiber/analysis , Skinfold Thickness , Sports/physiology , Physical Conditioning, Human/physiology , Feeding Behavior , 25631
2.
Nutr. hosp ; 26(6): 1328-1332, nov.-dic. 2011. ilus, tab
Article in English | IBECS | ID: ibc-104807

ABSTRACT

Background: The measurement of waist circumference (WC) is the most prevalent cause of the metabolic syndrome (MS). Objective: The aim of this study was to correlate WC and BMI with high-density lipoprotein (HDL-c) levels in patients with MS being consulted by the Family Health Program (PSF), Brazil. Methods: This cross-sectional study was conducted from September to November 2008 with 42 patients (29 women and 13 men) from 35 to 77 years. Dietary intake was reported, and biochemical and body composition measures were taken. Results: The HDL-c levels were higher in women when compared to men (48.4 ± 8.1 mg/dL vs. 36.4 ± 7.8 mg/dL). However, the triglycerides (TG)/HDL-c ratio and TG concentrations were lower in women (3.8 ± 1.5 and 178.0 ± 57.8 mg/dL, respectively) than in men (9.4 ± 8.5 and 471.5 ± 501.5 mg/dL, respectively). Regarding skinfold profile, the triceps was greater in females (37.0 ± 8.4 cm vs. 20.7 ± 10.5 cm). The dietetic profile showed that women had a lower intake of energy, fiber, phosphorus and sodium. The fruits and vegetables intake was diminished in the participants of this study, as less than 60% of the women and 50% of men met the daily recommendations. Approximately 54% of men and 28% of women had a lower intake of dairy products daily. Moreover, the results shows that the WC was negatively correlated to HDL-c (r = -0.41, p < 0.05) whereas the BMI is not associated with HDL-c (r = -0.34, p > 0.06). Conclusion: Our findings showed that WC is a better predictor of changes in HDL-c than BMI (AU)


Antecedentes: La medición de la circunferencia de la cintura (CC) es la causa más prevalente del síndrome metabólico (SM). Objetivo: el propósito de este estudio fue correlacionar la CC y el IMC con las concentraciones de lipoproteínas de densidad elevada (HDL-c) en pacientes con SM vistos en consulta del Programa de salud familiar (PSF), de Brasil. Métodos: Este estudio trasversal se realizó entre septiembre y noviembre de 2008 en 42 pacientes (29 mujeres y 13 hombres) de 35 a 77 años. Se registró la ingesta dietética y se tomaron medidas biomecánicas de la composición corporal. Resultados: las concentraciones de HDL-c fueron significativamente mayores en las mujeres en comparación con los hombres (48,4 ± 8,1 mg/dl frente a 36,4 ± 7,8 mg/dl). Sin embargo, la relación triglicéridos (TG)/HDL-c y las concentraciones totales de TG (3,8 ± 1,5 mg/dl y 178,0 ± 57,8 mg/dl, respectivamente) fueron menores en las mujeres que en los hombres (9,4 ± 8,5 mg/dl y 471,5 (92,0-1793,5) mg/dl, respectivamente). Con respecto al perfil del pliegue cutáneo, el tríceps fue mayor en mujeres (37,0 ± 8,4 cm frente a 20,7 ± 10,5 cm). El perfil dietético mostró que las mujeres tenían un menor aporte de energía, fibra, fósforo y sodio. La ingestión de frutas y verduras fue baja en los participantes en el estudio, menor del 60 y del 50% de las recomendaciones diarias en mujeres y hombres, respectivamente. Aproximadamente, el 54% de lo hombres y el 28% de las mujeres no tomaba productos lácteos a diario. Además, los resultados muestran que la CC se correlaciona negativamente con la HDL-c (r= -0,41, p < 0,05) mientras que el IMC no se asocia con las HDL-c (r = -0,34, p > 0,06). Conclusión: nuestros hallazgos mostraban que la CC es un mejor predictor de los cambios en las HDL-c que el IMC (AU)


Subject(s)
Humans , Metabolic Syndrome/diagnosis , Abdominal Circumference , Lipoproteins, HDL/analysis , Obesity/diagnosis , Body Mass Index , Biomarkers , Feeding Behavior
5.
Curr Microbiol ; 38(1): 18-21, 1999 Jan.
Article in English | MEDLINE | ID: mdl-9841776

ABSTRACT

A low-molecular-weight xylanase activity (XynI) was isolated from the fungus Acrophialophora nainiana after growth in a solid medium containing wheat bran. XynI was purified to apparent homogeneity by ultrafiltration and gel filtration chromatography. The purified enzyme had a molecular weight value of approx. 17 kDa, as determined by SDS-PAGE. This enzyme was most active at 50 degreesC and pH 6.0. At 50 degreesC the half-life was 150 min. The apparent Km value for birchwood xylan was much lower than the Km value for oat spelt xylan. XynI was activated by L-cysteine, DTE, beta-mercaptoethanol, and L-tryptophan. XynI did not show significant sequence homology with other xylanases. The analysis of hydrolysis products of xylans and wood pulps showed that XynI was able to release xylooligomers ranging from X2 to X3 and X2 to X6, respectively. The enzyme was not active against acetylated xylan. A small amount of xylose was released from deacetylated, birchwood, and oat spelt xylans. The results obtained with enzymatic treatment of Kraft pulp indicated a reduction in the amount of chlorine compounds required for the process and enhanced brightness gain.

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