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Search Results: 1 - 10 of 957 matches for " Lydia Lera "
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Evaluation of a Nutrition Intervention through a School-Based Food Garden to Improve Dietary Consumption, Habits and Practices in Children from the Third to Fifth Grade in Chile  [PDF]
Diego Vinueza, Lydia Lera, Judith Salinas, Carmen Gloria González, Lorena Barrios, Fernando Vio
Food and Nutrition Sciences (FNS) , 2016, DOI: 10.4236/fns.2016.710088
Abstract: Objective: Use a school-based food garden as an instrument to improve healthy dietary consumption, habits, and practices among children from the third to fifth grade in public schools in Chile. Design: Quasi-experimental, six-month intervention with an evaluation of dietary consumption, habits, and practices and use of the school-based food garden among the 3rd to 5th grade students. Setting: Two municipal schools in a low-middle income district in Santiago de Chile; one with a school garden intervention and a control school without a garden. Subjects: 155 third to fifth grade children, 63 in the intervention school and 92 in the control school (average age 10 years old, 58% boys). Results: In the intervened school, there was a significant improvement in the children’s dietary habits, such as peeling and slicing fruit (p < 0.05), making sandwiches (p < 0.05), and increased motivation to cook (p < 0.05). Fruit purchases at the school rose from 4% to 37% (p < 0.05) by the end of the intervention. Interest in growing vegetables or fruits at home increased from 48% to 70% (p < 0.05). The school children at the intervention school significantly increased their knowledge about 16 of 21 garden crops (p < 0.05), expanding the spectrum of the vegetables they can consume. There were no significant changes in the control school. Conclusions: The school-based food garden was effective in achieving change in dietary habits and practices among the third to fifth grade children. The project should be carried out for a longer period of time, so that the changes will be reflected in the students’ food consumption and nutritional status.
ETAPAS DEL CAMBIO, BENEFICIOS Y BARRERAS EN ACTIVIDAD FíSICA Y CONSUMO DE FRUTAS Y VERDURAS EN ESTUDIANTES UNIVERSITARIOS DE SANTIAGO DE CHILE
Olivares C,Sonia; Lera M,Lydia; Bustos Z,Nelly;
Revista chilena de nutrición , 2008, DOI: 10.4067/S0717-75182008000100004
Abstract: as baseline for health promotion and education interventions design, the stages of change, benefits and barriers in physical activity and fruit and vegetables intake were studied in 449 university students from santiago. instruments internationally validated and adapted to the country were applied. in physical activity, men were significant more active than women. benefits like ?i feel well? o ?it is entertaining? were more common in men and ?to loose weight? was most common in women. lack of time was the main barrier in both genders. 58% ate 1-2 portions of fruit and vegetables/daily and only 5% ate 5 portions daily. the main benefit associated with fruit and vegetables intake was ?to be healthy?. women were more motivated. ?i am lazy for preparing them? or ?i forget to eat them? were the most common barriers in both genders. these results will be useful in health promotion and education interventions with university students
El doble análisis en componentes principales para datos categóricos y su aplicación en un estudio de migración
PéREZ,RAúL ALBERTO; LERA,LYDIA; BOQUET,ANA;
Revista Colombiana de Estadística , 2006,
Abstract: we adapted the double principal component analysis (dacp) (bouroche 1975), developed for the analysis of three-dimensional quantitative data, to categorical data by mean of the chi-squared distance between rows and columns profile of a contingency table and we carry out an application to a study of internal migration in cuba.
Prevalencia de las deficiencias de zinc y cobre en adultos mayores de la Región Metropolitana de Santiago
Olivares,Manuel; Lera,Lydia; Albala,Cecilia; Pizarro,Fernando; Araya,Magdalena;
Revista médica de Chile , 2011, DOI: 10.4067/S0034-98872011000300001
Abstract: background: older subjects have a high risk of developing zinc and copper deficiencies. aim: to determine the prevalence of copper and zinc deficiencies in adults aged over 60 years, living in metropolitan santiago. subjects and methods: analyses were performed using anonymous serum samplesfrom older subjects living in santiago, chile, who participated in the multicenter project sabe. of the studied subjects, 49.3% had enough left over serum to measure serum zinc and copper concentrations by atomic absorption spectrometry. results: a total of444 men and 198 women were studied. a positive correlation between serum zinc and copper was found in both women (r = 0.44, p < 0.001) and men (r = 0.48, p < 0.001). there were no differences in serum zinc concentration by sex and age. the prevalence of subnormal serum zinc valúes was 66.9% in women and 66.7% in men. women had a significantly higher serum copper valúes than men (p < 0.02) and there were no differences by age. prevalence of subnormal serum copper valúes was higher in women than in men (32.9 and 23.7% respectively, p < 0.05). women had significantly higher copper i zinc serum ratio than men (p < 0.001). conclusions: older people living in metropolitan santiago have a high prevalence of copper and zinc deficiencies.
A?os de vida perdidos por muerte prematura (AVPP) en adultos del Gran Santiago: ?Hemos ganado con equidad?
Sánchez R,Hugo; Albala B,Cecilia; Lera M,Lydia;
Revista médica de Chile , 2005, DOI: 10.4067/S0034-98872005000500010
Abstract: background: potentially productive years of life lost (ppyll) is an impact measure that illustrates the lost that a society suffers as a consequence of deaths of young people or premature deaths. aim: to study the evolution of ppyll in adults in the periods 1994-1996 and 1999-2001, according to sex, income quintiles and main diagnostic groups in the communities of metropolitan santiago. material and methods: ecological study analyzing the population of metropolitan santiago, that represents 36% of the national population. a total of 87,969 deaths in people aged 20 to 79 years were analyzed. results: there is a greater amount of ppyll among the poorest quintiles and men represent the higher number of ppyll. in the different analyzed periods, all quintiles experienced a reduction in ppyll. according to diagnosis, endocrine diseases experienced the greater decrease between periods, followed by respiratory disease. noteworthy was the increase of ppyll due to infectious diseases. ppyll due to digestive diseases was 2.3 higher in the poorest quintile, as compared with the wealthiest quintile (20/20 ratio). the ratio for traumatic disease was 1.8. conclusions: when comparing both periods, there is a net gain of potentially productive years of life in all income quintiles and in both genders
DOUBLE PRINCIPAL COMPONENTS ANALYSIS FOR CATEGORICAL DATA AND ITS APPLICATION TO A MIGRATION STUDY EL DOBLE ANáLISIS EN COMPONENTES PRINCIPALES PARA DATOS CATEGóRICOS Y SU APLICACIóN EN UN ESTUDIO DE MIGRACIóN
Pérez Raúl Alberto,Lera Lydia,Boquet Ana
Revista Colombiana de Estadística , 2006,
Abstract: We adapted the double principal component analysis (DACP) (Bouroche 1975), developed for the analysis of three-dimensional quantitative data, to categorical data by mean of the Chi-squared distance between rows and columns profile of a contingency table and we carry out an application to a study of internal migration in Cuba. Se hace una adaptación del método doble análisis en componentes principales (DACP) (Bouroche 1975), creado para el análisis de datos cuantitativos de tipo cúbico, a datos categóricos mediante la utilización de la distancia Chi-cuadrado entre perfiles fila y columna de una tabla de contingencia y se realiza una aplicación a un estudio de migración interna en Cuba.
ETAPAS DEL CAMBIO, BENEFICIOS Y BARRERAS EN ACTIVIDAD FíSICA Y CONSUMO DE FRUTAS Y VERDURAS EN ESTUDIANTES UNIVERSITARIOS DE SANTIAGO DE CHILE STAGES OF CHANGE, BENEFITS AND BARRIERS ON PHYSICAL ACTIVITY AND FRUIT AND VEGETABLES INTAKE IN CHILEAN UNIVERSITY STUDENTS
Sonia Olivares C,Lydia Lera M,Nelly Bustos Z
Revista Chilena de Nutricíon , 2008,
Abstract: Como línea base para dise ar intervenciones de promoción y educación, se determinaron las etapas del cambio, beneficios y barreras relacionados con la actividad física y el consumo de frutas y verduras en 449 estudiantes universitarios de ambos géneros de Santiago. Se utilizaron instrumentos validados internacionalmente y adaptados en el país. En actividad física, los hombres resultaron significativamente más activos que las mujeres. Los beneficios más destacados por ellos fueron "me hace sentir bien" o "me entretiene", en tanto el primero y "perder peso" fueron más frecuentes en las mujeres. En ambos géneros, la principal barrera fue la falta de tiempo. El 58% comía 1 a 2 porciones de frutas y verduras al día y sólo el 5% alcanzaba las 5 porciones. El principal beneficio de comer frutas y verduras se asoció a "estar sano/a", y las principales barreras fueron "me da flojera prepararlas" o "se me olvida comerlas", en ambos géneros. Estos resultados se utilizarán en el dise o de intervenciones en promoción y educación para estudiantes universitarios As baseline for health promotion and education interventions design, the stages of change, benefits and barriers in physical activity and fruit and vegetables intake were studied in 449 university students from Santiago. Instruments internationally validated and adapted to the country were applied. In physical activity, men were significant more active than women. Benefits like I feel well o it is entertaining were more common in men and to loose weight was most common in women. Lack of time was the main barrier in both genders. 58% ate 1-2 portions of fruit and vegetables/daily and only 5% ate 5 portions daily. The main benefit associated with fruit and vegetables intake was to be healthy . Women were more motivated. I am lazy for preparing them or I forget to eat them were the most common barriers in both genders. These results will be useful in health promotion and education interventions with university students
Indicadores antropométricos, composición corporal y limitaciones funcionales en ancianos Anthropometry, body composition and functional limitations in the elderly
Patricia Arroyo,Lydia Lera,Hugo Sánchez,Daniel Bunout
Revista médica de Chile , 2007,
Abstract: Background: Functional limitations limit the independence and jeopardize the quality of life of elderly subjects. Aim: To assess the association between anthropometric measures and body composition with functional imitations in community-living older people. Material and Methods: Cross-sectional survey of 377 people >6 5 years old (238 women), randomly selected from the SABE/Chile project. Complete anthropometric measurements were done. Handgrip muscle strength was measured using dynamometers. Body composition was determined using Dual-Energy X-Ray Absorptiometry. Functional limitations were assessed using self reported and observed activities. Results: Body mass index was strongly associated with fat mass (men r =0.87; women r =0.91) and with lean mass (men r =0.55; women r =0.62). Males had significantly greater lean mass (48.9 kg vs 34.9 kg), and bone mass than females (2.6 kg vs 1.8 kg) and women had higher fat mass than men (26.3 kg vs 22.9 kg). The prevalence of functional imitations was high, affecting more women than men (63.7% vs 37.5%, p <0.01). Functional imitations were associated with lower handgrip strength in both sexes. In the multiple regression models, with functional imitations as dependent variable and anthropometric measures as contributing variables, only hand grip strength had a significant association (negative) with functional imitation in both genders. Age was also a significant risk factor for functional imitations among women. Conclusions: Hand grip strength was strongly and inversely associated with functional imitations. Handgrip dynamometry is an easy, cheap and low time-consuming indicator for the assessment of functional imitations and the evaluation of geriatric interventions aimed to improve functional ability
A os de vida perdidos por muerte prematura (AVPP) en adultos del Gran Santiago: Hemos ganado con equidad? Potentially productive years of life lost among adults in Metropolitan Santiago: Is there an improvement in equality?
Hugo Sánchez R,Cecilia Albala B,Lydia Lera M
Revista médica de Chile , 2005,
Abstract: Background: Potentially productive years of life lost (PPYLL) is an impact measure that illustrates the lost that a society suffers as a consequence of deaths of young people or premature deaths. Aim: To study the evolution of PPYLL in adults in the periods 1994-1996 and 1999-2001, according to sex, income quintiles and main diagnostic groups in the communities of Metropolitan Santiago. Material and methods: Ecological study analyzing the population of Metropolitan Santiago, that represents 36% of the national population. A total of 87,969 deaths in people aged 20 to 79 years were analyzed. Results: There is a greater amount of PPYLL among the poorest quintiles and men represent the higher number of PPYLL. In the different analyzed periods, all quintiles experienced a reduction in PPYLL. According to diagnosis, endocrine diseases experienced the greater decrease between periods, followed by respiratory disease. Noteworthy was the increase of PPYLL due to infectious diseases. PPYLL due to digestive diseases was 2.3 higher in the poorest quintile, as compared with the wealthiest quintile (20/20 ratio). The ratio for traumatic disease was 1.8. Conclusions: When comparing both periods, there is a net gain of potentially productive years of life in all income quintiles and in both genders
Asociación entre el índice de masa corporal y la talla desde el nacimiento hasta los 5 a os en preescolares chilenos Association between body mass index (BMI) and height from birth to 5 years in Chilean preschool children
Juliana Kain,Camila Corvalán,Lydia Lera,Marcos Galván
Revista médica de Chile , 2011,
Abstract: Background: It has been shown that excess weight gain during childhood is associated with a greater risk of obesity; this relationship may be mediated by growth in height. Aim: To quantify the associations between z scores for body mass index (BMIZ) and height for age (HAZ) from birth to 5 years of age and to assess how this association varies according to age and adiposity. Material and Methods: Weight and height were recorded at 11 occasions from birth on a cohort of1089 Chilean five year-old children with a birth weight > 2500 g. BMI, BMIZ, HAZ and prevalence of obesity were calculated. We determined the cross-sectional association between BMIZ and HAZ for the total sample and by 3 BMI Z categories, using Pearson correlation. We determined the probability of obesity according to four HAZ categories. Results: Obesity increased continuously reaching approximately 16% at 5 years. Stunting was virtually nonexistent. No association between BMIZ and HAZ was observed at birth, while at 1 and 2 months, leaner infants had lower stature. No association between theseparameters was observed between 6-24 months, while after 3 years, a clear relationship was observed. Conclusions: The probability of a preschool child of being obese is less than 10% with a HAZ is < 0. Nevertheless, children with heights above the median (even within the normal range) have an increased risk of obesity, especially after 3 y of age. Between 0-5 years, the relationship between weight and height varies by age and adiposity.
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