Browsing by Autor "Post, GB"

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Dietary intake and physical activity of Bolivian schollboys at high altitude
(Facultad de Medicina, Enfermería, Nutrición y Tecnología Médica, 1992) Post, GB
A population of about 50 schoolboys from 10-12 years old living in the city of La Paz - Bolivia at an altitude between 3600 and 4100 m are studied. Food consumption and physical activity is measured by 24-hours interviews. Also anthropometric data are collected. Three different kinds of schools are involved: 1.A French-Bolivian school (FB), with children of a relative high social standard,2. a school in Villa Fatima (VF), children with a relative low social standard, and 3. a school in El Alto (EA), with children of medium to low social standard. The mean energy intake is about 2000 kcalories whereas the estimated mean energy expenditure is about 2250 kcal. Significant, differencies are found in energy intake; children of FB have higher energy intakes than children of VF and EA. Also significant differencies are found in energy expenditure, although in a different direction, higher in boys of VF and EA Total skinfolds is shown significant higher in FB.(41 mm) compared to VF (27 mm) and EA (31 mm). The relationship between dietary intake and physical activity show a tendency to marginal energy intakes compared to the energy expenditure in boys with a low socio-economic status, supported by the mean of total skinfolds.
The nutritional intake of Bolivian boys : the relation between altitude and socioeconomic status
(Facultad de Medicina, Enfermería, Nutrición y Tecnología Médica, 1994) Post, GB
Abstract. The nutrition of 57 native Bolivian boys living at high altitude (HA) in La Paz (± 4000 m) and of 63 boys living at low altitude (LA) in St. Cruz (± 400 m) is described. The dietary information was obtained with a 24-h recall method by interviewing the child and mother. The food items are listed in household measures and weight if possible. All food items were converted into grams, and nutrients were calculated by using food composition tables of Latin America. The results show that the energy and nutrient intake of the HSES boys was significantly higher (p < 0.05) than the intake of the LSES boys, at both altitudes. At HA the mean energy intake of the HSES boys was about 9.8 MJ per day (± 0.7); for the LSES boys an intake was found of 8.4MJ per day (± 0.4). At LA the HSES boys had an energy intake of 10.7 MJ per day (± 0.6) and the LSES boys 7.7 MJ per day (± 0.3). The daily protein intake was in HAHSES boys 85g (± 8), LAHSES 100g (± 8), HALSES 60g (± 4), and LALSES 52g (± 3). In comparison with the recommended daily requirements the dietary intakes of the HSES boys seem too "rich," and of the LSES boys to some extent too "poor." These results are reflected in smaller body height and body weight of LSES boys and a higher fat mass in HSES boys irrespective of altitude.