Value of a clinical test for assessing physical activity in children Background: An appropriate measurement of physical activity (PA) in children is useful, since inactivity is associated to obesity, cardiovascular and metabolic risk. Aim: To assess the reliability of the INTA questionnaire of PA, to compare the derived PA score with accelerometry and to assess its ability to identify excessively inactive children. Material and methods: One hundred eighty children aged 8 to 13 years answered an interviewer-administered questionnaire about their usual PA, consisting in 5 items (recumbent, seated, walking, playing outdoor, sports). The answers were converted to a PA score with a 0-10 points scale. Reliability was tested in 87 children by test/retest conducted 3-5 days apart. The PA score was compared with 3-day accelerometry in 77 of 93 children (35 obese and 42 non obese). Receiver operating characteristic (ROC) curves were used to determine the optimal cutpoint for identify an excessively sedentary child. Results: The test/retest reliability of the questionnaire was 0.69 to 0.93 (Lin coefficient). Accelerometry was significantly associated with PA score (RHO: 0.60, p =0.008), outdoor plays (RHO: 0.37, p =0.0009) and practicing of sports (RHO: 0.33, p =0.003). Obese children were less active than non obese children, according both to PA score and to accelerometry. The optimal cut-point for classifying a child as too sedentary was a score of 5 (sensitivity =0.89). Conclusions: The INTA-test is a valuable instrument for measuring usual PA in clinical practice and is easy to administer (

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Childhood obesity is the main nutritional and public health problem in Chile, being the principal causes, the increase in energy dense foods and the decline of physical activity. Interventions to prevent obesity at infancy are focused mainly in improving quality and quantity of dietary intake, without taking into account physical activity, which is expressed under two years of age, mainly by motor development. Some studies have proven that motor development at early age, may influence the ability to perform physical activity. Thus, infants scoring a lower motor development may have a greater risk of becoming obese. It isn't know if childhood obesity causes lower motor development (given that children may have greater difficulty to move), or on the contrary, it is the lower ability to move, which increases the obesity risk. The objective of this manuscriptis analize the evidence regards the relation between breastfeeding, motor development and obesity in the childhood.To be able to understand this asocation and casual mecanism, it is important to develop stategys focused in early infancy to promote breastfeeding, healthy eating and early stimulation, starting in pediatric office. 452ClINICal OveRvIew Breastfeeding, gross motor development and obesity -G. weisstaub N et al

Background: Validated equations to measure body composition in (Rev Méd Chile 2008; 136: 433-41).

‰‰n the first study, a significant decrease, 11.9% (p<0.05), was observed in the children after 4 weeks of La1 consumption in comparison with the basal values before treatment, while no differences were observed in the other 2 groups. In the study with volunteers, DOB values decreased significantly during the study (Anova F=4.2, p<0.04), resulting in a decrease of 41% in comparison with the basal DOB values. In both studies a correlation was observed between basal DOB values and the magnitude of the decrease of DOB induced by La1. These results indicate that regular intake of L. johnsonii La1 interferes with Hp in subjects colonized with this pathogen, this effect is greater when La1 intake is more frequent, and it is positively related to the basal levels of colonization with Hp. Consumption of La1 modulates gastric colonization by Hp in populations at risk for this infection and constitutes an interesting alternative for its management]]>

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