Sensibilidad y especificidad de la adiposidad abdominal con el síndrome metabólico en ancianos / Sensitivity and specificity of abdominal adiposity with metabolic syndrome in the elderly

Objetivo. Se ha reconocido que la adiposidad abdominal está asociada a factores de riesgo cardiovascular, intolerancia a la glucosa, hipertensión y dislipidemia. El objetivo ha sido evaluar la relación de la grasa de tronco y del índice de grasa visceral, con el síndrome metabólico (SM) en sujetos ancianos. Métodos. Participaron, 208 sujetos (130 mujeres y 78 varones) con una edad media de 82,5 años. Se tomaron medidas de obesidad abdominal por antropometría y bioimpedancia. Se realizaron curvas ROC para evaluar la capacidad diagnóstica con respecto al SM. Resultados. Existen diferencias entre sexos en el índice de masa corporal, índice cintura cadera, perímetro abdominal, grasa de tronco y grasa visceral (p<0,05). También se encuentran diferencias de los parámetros antropométricos y de bioimpedancia entre sujetos con y sin SM (p<0,05) y solo existen diferencias en la glucosa, los triglicéridos y colesterol HDL (p<0,05). Se encuentran correlaciones significativas entre la mayor parte de medidas antropométricas y de bioimpedancia abdominal (p<0,05). Las áreas bajo la curva (ABC) del índice cintura altura, perímetro abdominal, diámetro sagital abdominal y grasa de tronco son mayores a 0,8 (todas, p< 0,01) y en mujeres no superan valores de 0,65. Los puntos de corte obtenidos son 26,81 y 23,53kg/m2 para índice de masa corporal, 102 y 91cm para el perímetro abdominal, 22,1 y 20,7cm de diámetro sagital abdominal, 34 y 43,7% de grasa de tronco y 17 y 11,5 de índice de grasa visceral en hombres y mujeres respectivamente. Conclusiones. Existen diferentes niveles de capacidad predictiva del SM, según el género. La grasa de tronco y el índice de grasa visceral presentan una mayor capacidad predictiva del SM en hombres que en mujeres (AU)

Objectives. It is recognised that abdominal adiposity is associated with cardiovascular risk factors, such as intolerance to glucose, hypertension and dyslipidaemia. The objective of the present study was to assess the relationship of trunk fat and visceral fat index, obtained by anthropometric and bioelectrical impedance, with metabolic syndrome (SM) in an elderly population. Methods. The study included 208 subjects (78 men and 130 women) with a mean age of 82.5 years. Abdominal obesity was assessed by anthropometry and bioelectrical impedance. ROC curves were calculated in order to assess the ability of these variables to diagnose metabolic syndrome. Results. There are differences between men and women in body mass index, waist to height ratio, waist circumference, and bioelectrical impedance measurements as trunk fat and visceral fat (p<.05). Also, found differences in anthropometric indices and variables and abdominal bioelectrical impedance between subjects with and without SM (p<.05) and only exist differences in blood glucose, triglycerides and HDL cholesterol (p<.05). There are significant correlations between anthropometric variables and abdominal bioelectrical impedance (p<.05). Areas under the curve (AUC) of waist to height index, waist circumference, sagittal abdominal diameter, and trunk fat were greater than 0.8 (all p<.01), and in women did not exceed values of 0.65. The cut-off points obtained for BMI were 26.81 and 23.53kg/m2, 102 and 91cm for waist circumference, 22.1 and 20.7cm for sagittal abdominal diameter, 34% and 43.7% for trunk fat, and 17 and 11.5 for visceral fat ratio in men and women, respectively. Conclusions. There are different levels of predictive ability for metabolic syndrome according to gender. Trunk fat and visceral fat index and anthropometric measures have higher predictive ability for metabolic syndrome in men than in women (AU)

[Sensitivity and specificity of abdominal adiposity with metabolic syndrome in the elderly]. / Sensibilidad y especificidad de la adiposidad abdominal con el síndrome metabólico en ancianos.

OBJECTIVES: It is recognised that abdominal adiposity is associated with cardiovascular risk factors, such as intolerance to glucose, hypertension and dyslipidaemia. The objective of the present study was to assess the relationship of trunk fat and visceral fat index, obtained by anthropometric and bioelectrical impedance, with metabolic syndrome (SM) in an elderly population. METHODS: The study included 208 subjects (78 men and 130 women) with a mean age of 82.5 years. Abdominal obesity was assessed by anthropometry and bioelectrical impedance. ROC curves were calculated in order to assess the ability of these variables to diagnose metabolic syndrome. RESULTS: There are differences between men and women in body mass index, waist to height ratio, waist circumference, and bioelectrical impedance measurements as trunk fat and visceral fat (p<.05). Also, found differences in anthropometric indices and variables and abdominal bioelectrical impedance between subjects with and without SM (p<.05) and only exist differences in blood glucose, triglycerides and HDL cholesterol (p<.05). There are significant correlations between anthropometric variables and abdominal bioelectrical impedance (p<.05). Areas under the curve (AUC) of waist to height index, waist circumference, sagittal abdominal diameter, and trunk fat were greater than 0.8 (all p<.01), and in women did not exceed values of 0.65. The cut-off points obtained for BMI were 26.81 and 23.53kg/m2, 102 and 91cm for waist circumference, 22.1 and 20.7cm for sagittal abdominal diameter, 34% and 43.7% for trunk fat, and 17 and 11.5 for visceral fat ratio in men and women, respectively. CONCLUSIONS: There are different levels of predictive ability for metabolic syndrome according to gender. Trunk fat and visceral fat index and anthropometric measures have higher predictive ability for metabolic syndrome in men than in women.

EFFECTS OF FOOD AND DRINK INGESTION ON BODY COMPOSITION VARIABLES OF ABDOMINAL BIOELECTRICAL IMPEDANCE.

OBJECTIVE: to know the changes in trunk fat and visceral fat level determined by abdominal bioelectrical impedance (BIA) as well as other anthropometric measures related to the central or abdominal fat after the ingestion of a lunch. METHODS: the experimental study was conducted to assess a longitudinal intervention descriptive study. PARTICIPANTS: 21 subjects (10 male and 11 female), volunteers who have access to a medical assessment, with an age of 74 ± 13.43 years. MEASUREMENTS: Maximal waist circumference in standing position, waist circumference at navel level in supine position and sagittal abdominal diameter (SAD). In the same position trunk fat and visceral fat level by abdominal bioelectrical impedance analysis with Tanita AB-140 (ViScan) were obtained before and after meal. RESULTS: anthropometric measures as waist circumference in supine position and SAD did not show significant differences (P > 0.05), after food ingestion, except for a significant increase of the maximal waist circumference in standing position (P < 0.05). In addition trunk fat and visceral fat ratio did not change (P > 0.05). The percentage changes of the measures were less than 2% for waist circumference in standing position, waist circumference by Viscan, sagittal abdominal diameter and trunk fat and 5.9% for visceral fat ratio. CONCLUSIONS: the effects on trunk fat and visceral fat ratio by abdominal bioelectrical impedance are minimal after the ingestion of a portion of food and drink, although it is always recommended to do it in fasting conditions.

Objetivo: conocer los cambios en la grasa del tronco y el nivel de grasa visceral determinado por BIA abdominal, así como otras medidas antropométricas relacionadas con la grasa abdominal o central después de la ingestión de una comida. Métodos: se realizó un protocolo experimental para evaluar un estudio descriptivo de intervención longitudinal. Los participantes fueron 21 sujetos (10 hombres y 11 mujeres), voluntarios que tuvieron acceso a una evaluación médica, con una edad de 74 años ± 13,43. Las mediciones antropométricas fueron: circunferencia de la cintura máxima en posición de pie, circunferencia de la cintura a nivel del ombligo en posición de decúbito supino y diámetro sagital abdominal (SAD). Además se obtuvo la grasa del tronco y el nivel de grasa visceral, por análisis de impedancia bioeléctrica abdominal, con un dispositivo Tanita AB-140 (ViScan), todo ello antes y después de una ración de comida. Resultados: las medidas antropométricas, como la circunferencia de la cintura en posición supina y SAD, no mostraron diferencias significativas (P > 0,05), después de la ingestión de alimentos, a excepción de un aumento significativo de la circunferencia de la cintura máxima en posición de pie (P < 0,05). Además, la relación entre la grasa visceral y en tronco no cambió (P > 0,05). Los cambios porcentuales de las medidas fueron menores del 2% para la circunferencia de la cintura en posición de pie, para la circunferencia de cintura por Viscan, para el diámetro sagital abdominal y la grasa del tronco, y un 5,9% para el nivel de grasa visceral. Conclusiones: los efectos de una comida y bebida sobre la grasa del tronco y el nivel de grasa visceral, medidas por impedancia bioeléctrica abdominal, son mínimas, aunque siempre es recomendable hacerlo en condiciones de ayuno.

Effects of food and drink ingestion on body composition variables of abdominal bioelectrical impedance / Efectos de la comida y la bebida sobre las variables de composición corporal en la bioimpedancia abdominal

Objective: to know the changes in trunk fat and visceral fat level determined by abdominal bioelectrical impedance (BIA) as well as other anthropometric measures related to the central or abdominal fat after the ingestion of a lunch. Methods: the experimental study was conducted to assess a longitudinal intervention descriptive study. Participants: 21 subjects (10 male and 11 female), volunteers who have access to a medical assessment, with an age of 74±13.43 years. Measurements: Maximal waist circumference in standing position, waist circumference at navel level in supine position and sagittal abdominal diameter (SAD). In the same position trunk fat and visceral fat level by abdominal bioelectrical impedance analysis with Tanita AB-140 (ViScan) were obtained before and after meal. Results: anthropometric measures as waist circumference in supine position and SAD did not show significant differences (P>0.05), after food ingestion, except for a significant increase of the maximal waist circumference in standing position (P0.05). The percentage changes of the measures were less than 2% for waist circumference in standing position, waist circumference by Viscan, sagittal abdominal diameter and trunk fat and 5.9% for visceral fat ratio. Conclusions: the effects on trunk fat and visceral fat ratio by abdominal bioelectrical impedance are minimal after the ingestion of a portion of food and drink, although it is always recommended to do it in fasting conditions (AU)

Objetivo: conocer los cambios en la grasa del tronco y el nivel de grasa visceral determinado por BIA abdominal, así como otras medidas antropométricas relacionadas con la grasa abdominal o central después de la ingestión de una comida. Métodos: se realizó un protocolo experimental para evaluar un estudio descriptivo de intervención longitudinal. Los participantes fueron 21 sujetos (10 hombres y 11 mujeres), voluntarios que tuvieron acceso a una evaluación médica, con una edad de 74 años ± 13,43. Las mediciones antropométricas fueron: circunferencia de la cintura máxima en posición de pie, circunferencia de la cintura a nivel del ombligo en posición de decúbito supino y diámetro sagital abdominal (SAD). Además se obtuvo la grasa del tronco y el nivel de grasa visceral, por análisis de impedancia bioeléctrica abdominal, con un dispositivo Tanita AB-140 (ViScan), todo ello antes y después de una ración de comida. Resultados: las medidas antropométricas, como la circunferencia de la cintura en posición supina y SAD, no mostraron diferencias significativas (P > 0,05), después de la ingestión de alimentos, a excepción de un aumento significativo de la circunferencia de la cintura máxima en posición de pie (P < 0,05). Además, la relación entre la grasa visceral y en tronco no cambió (P > 0,05). Los cambios porcentuales de las medidas fueron menores del 2% para la circunferencia de la cintura en posición de pie, para la circunferencia de cintura por Viscan, para el diámetro sagital abdominal y la grasa del tronco, y un 5,9% para el nivel de grasa visceral. Conclusiones: los efectos de una comida y bebida sobre la grasa del tronco y el nivel de grasa visceral, medidas por impedancia bioeléctrica abdominal, son mínimas, aunque siempre es recomendable hacerlo en condiciones de ayuno (AU)