Physical activity in normal and low height for age Chilean school children irfe obtained for a week day and a weekend-A trained observer recorded physical activities performed by each c u i d along a 20 rrrutes breck in schoc! duties. Most acrivities were of sedentary type. A striking findrg wcs 'he time soent en sdenfary act'viries such as sleeping and lync dow^ ( 1 1 .5 ± 1.1 to 1 2.0 ± 1 .4 nous in normal and small for height boys and 1 1 .9 ± 1 .2 to 1 2.2 ± 1 .6 hours in normcl and snail for -eight grls). Both boys and girls spent an averace 3 hours a day watching TV on school days and 4 hours or more cr weekends. No s'gnificant differences in time aistr'bution of different physical activities were found oefween normal aid short stature children. Direct cbserva'ion showed that normal aoys spend significantly larger proportion of iheir time |29.6%j :n moderate and heavy activries than short boys and girls and tna" norrra' girls (p < 0.05J. Srra'l for age child'en encage less Ine in '-igh expendi f ure cctiv'ties than "ormal children, Thus, in general 'hese chilean schoc : children showed sedentary life styles, with minimal physical actviry and they devoted 30% of t^eir daily time to watch TV.
Mineral absortion in infants fed with a new modified cow's milk formulaCow's miik has excessive calcium and phosphorus content and deficient amounts of zinc and copper, relative to the needs of normal infants. Calcium, phosphorus, magnesium, zinc, and copper absorption with a new cow milk formula which macronutrient and mineral compositions were adapted to comply with most normal infant's requirements, were studied in 9 male infants recovering from malnutrition in a closed nutritional recovery center. Patient's age was 3 to 1 0 months and their weight/length ratio was > 85%. Each infant was fed for six days with unmodified powdered cow's milk diluted to 10%, with sucrose 5%, maltodextrin 1% and vegetable oil 1%added, and for another six days witn modified cow's milk diluted to 1 5% plus maltodextrin 2.5%. Metabolic balance was done in the last three days of each experimental period to every child. Modified milk had lower calcium, magnesium and phosphorus (20%) and higher, copper (60%) and zinc (25%) contents (%) than unmodified milk. Calcium absorption (%) was similar with both unmodified and modified milk [49.0 ± 14.2%vs62.5± 18.6%); absolute calcium absorption with modified milk complied with accepted infant's needs. Apparent phosphorus absorption (54.3 ± 6.7 with modified milk vs 86.8 ± 9.1 mg • kg -d with unmodified milk) should be enough for normal bone mineralization. Net magnesium absorption for modified milk was significantly lower than that of unmodifed milk (3.5 ± 1.2 vs 0.1 + 2.2 mg • kg d; p < 0.001). Copper absorption was deficient with unmodified miik but it was sufficient under modified milk (95.4 + 13.3 jug -kg • d). Both formulae met recommended zinc allowances. The modified milk formula seems to better meet mineral requirements of infants than unmodified powdered cow's milk.Los principals objetivos al desarrollar formumetabolizaci6n y los insuficientes conocimientos las Idcteas, adecuadas a los requerimientos de acerca de los reales requerimientos de estos numinerales del primer ano de vida, son promover trientes. La leche de vaca, sin considerar la bioun crecimiento y desarrollo psicomotor normal, disponibilidad de los minerales, tiene un conteasegurar una mineralizaci6n osea adecuada y nido teorico cercano al adecuado de zinc, excemantener una respuesta inmune dptima 1 ' 2 . sivo de otros (calcio, f6sforo), e insuficiente de Entre los factores que dificultan en la actualidad otros (cobre,magnesio) 1~i°.una recomendaci6n mis exacta, en cuanto al En la formulation de una leche de vaca en aporte de minerales, estan las multiples interacpolvo modificada (LPM), que ha sido propuesta ciones entre minerales, o con otros nutrientes, para incorporar en el Programa Nacional (chileque pueden modificar su biodisponibilidad o su no) de Alimentation Complementaria (PNAC), se han efectuado cambios en la concentraci6n de algunos minerales y tambie"n de otros nu-1. Material y MetodosSe seleccionaion lactantes con desnutricion primaria, hospitalizados para su tratamiento enun centro cerrado de recuperacion nu...
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.