Predictive equations for fat mass in older Hispanic adults with excess adiposity using the 4-compartment model as a reference method.

Background: Predictive equations are the best option for assessing fat mass in clinical practice due to their low cost and practicality. However, several factors, such as age, excess adiposity, and ethnicity can compromise the accuracy of the equations reported to date in the literature.

Objective: To develop and validate two predictive equations for estimating fat mass: one based exclusively on anthropometric variables, the other combining anthropometric and bioelectrical impedance variables using the 4C model as the reference method.

Determination of Fat-Free Mass Density and its Components in Older Hispanic Adults by In Vivo Methods.

The densitometry method estimates body composition based on cadaver reference values, mainly the fat-free mass density value of 1.100 g/cm. However, several changes in fat-free mass components by aging, ethnicity, and excess adiposity could influence their density and affect body composition estimations.

Agreement between laboratory methods and the 4-compartment model in assessing fat mass in obese older Hispanic-American adults.

Background/objectives: Densitometry (Siri's and Brožek's equations), hydrometry (by the deuterium dilution technique), and dual-energy X-ray absorptiometry (DXA) are three methods for estimating body composition. However, because they are all based on certain assumptions, they may not be applicable to aged and obese subjects due to changes in their body composition. Hence, the validity of these "laboratory methods" could be affected in obese older people.

High Hydration Factor in Older Hispanic-American Adults: Possible Implications for Accurate Body Composition Estimates.

Age- and obesity-related body composition changes could influence the hydration factor (HF) and, as a result, body composition estimates derived from hydrometry. The aim of the present study was to compare the HF in older Hispanic-American adults to some published values. This cross-sectional study included a sample of 412 subjects, men and women, aged ≥60 years from northern Mexico.

JAG1, MEF2C and BDNF polymorphisms associated with bone mineral density in women from Northern México.

Introduction: Osteoporosis is characterized by a low bone mineral density. Genetic composition is one of the most influential factors in determining bone mineral density (BMD). There are few studies on genes associated with BMD in the Mexican population.

Body frame size in school children is related to the amount of adipose tissue in different depots but not to adipose distribution.

Objectives: The main aim of this study was to test the hypothesis that body frame size is related to the amount of fat in different adipose tissue depots and to fat distribution in schoolchildren.

Methods: Children aged between 5 and 10 years were included in this cross-sectional study (n = 565). Body frame size, adiposity markers (anthropometric, skinfolds thickness, and ultrasound measures), and fat distribution indices were analyzed.

Basic-education mexican teachers' knowledge of biotechnology and attitudes about the consumption of genetically modified foods.

Over the past few years, a new research field has emerged, focusing on the social-scientific criteria for the study of opinions toward genetically modified foods (GMFs), since these may be limiting factors for the success or failure of these products. Basic education is the first step in the Mexican education system, and teachers may wield an outsized influence on the attitudes and preferences of children, prospective future consumers of these products. To better understand the current state of knowledge of biotechnology issues and opinions toward the consumption of GMF of Mexican teachers, a questionnaire was distributed, and 362 Mexican teachers of basic education responded.

[EFFECT OF INGESTION AND EXCRETION OF FLUIDS IN DETERMINING BODY COMPOSITION WITH DEUTERIUM DILUTION METHOD IN SCHOOL CHILDREN].

Introduction: the deuterium dilution technique is a reference method for measuring body composition in children. However, to our knowledge, there is no report on how some of the procedures used affect the measurement of total body water (TBW) and other estimates.

Objective: to analyze whether considering fluid intake and urine excretion during the test affects the final TBW, fat mass and fat free mass results.

[Intakes of energy and macronutrients in pregnant women in the northeast of Mexico].

Descriptive and transversal study, first to report the dietary intake of energy and macronutrients in pregnant women in the northeast of Mexico. Convenience sample of 125 pregnant women (15-45 years of age) in the third trimester, who were prenatal patients in the Hospital Regional Materno Infantil, Nuevo León, Mexico. It was reported the level of studies, marital and professional status, weight, height and body mass index (BMI).

Iron status and dietary intakes of iron in normal-weight and obese young Mexican women.

Introduction: Obesity is reported to be a predictor of iron deficiency. In Mexico, 45.5% of women older than 20 years have obesity, and the prevalence of anemia is 10.

[Effect of a School Breakfast Program on the prevalence of obesity and cardiovascular risk factors in children].

Objective: To determine the effect of a School Breakfast Program on obesity and some cardiovascular risk factors in 6 to 10 year old schoolchildren.

Material And Methods: A quasi-experimental prospective study was conducted in 2002-2003, in 17 municipalities of Sonora State, Mexico. The intervention group consisted of 254 children participating in a School Breakfast Program (SBP group).