pedometer

Ambulatory physical activity, triglycerides and atheromatic index in preschool children

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In the recent years it has been highlighted that health conditions associated with lack of physical activity (such as cardiovascular diseases, obesity, etc.) can appear already from childhood. Therefore, health organizations worldwide have issued directives to organize physical activity (PA) at this age. The current study is focused in the relationship between the number of steps of pre-school children and their level of triglycerides and Atheromatic Index (AI) which is the ratio of total cholesterol over high-density cholesterol (HDL). The study sample was 30 children in the age of 4-6 years old without any diagnosed health issues. To evaluate the ambulatory activity of the children, pedometers Omron HJ-720IT-E2 were used. Morning blood samples were received, after the children were fasting for at least 12 hours. The statistical relationship between the number of steps per day, and the values of triglycerides concentration and AI was evaluated using Pearson correlation. The results showed a negative correlation between the number of steps and both triglycerides (p<.005) and AI (p<.001). It is therefore demonstrated that children without sufficient PA have a higher risk of serious health issues in their future life. In conclusion, the significance of PA from an early age needs to be emphasized and actions to organize the PA of preschool children should be taken.

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Relationship between BMI, physical activity and TV-watching in preschool children.

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The aim of this study is to identify the relationship between BMI, physical activity, and hours of watching TV in preschool aged children. The sample consisted of 102 children (49 boys and 53 girls) aged 48 to 79 months (Mean=60.67, S.D.=7.07). Physical activity was measured using an OMRON walking style II pedometer, while hours of TV watching and occupation with “digital” games were recorded using a parent questionnaire. Differences between groups were assessed using one way analysis of variance (ANOVA). From the results was not found any statistically significant effect of BMI in number of steps/week (F =.411, p=.672), in number of covered km/week (F=.411, p=.673) and in hours of TV watching/day (F=.004, p=.996). However, statistically significant difference was found in the level of physical activity between children that watched less than 1h TV per day, (number of steps/week: Mean=61426.75, SD=10766.28) and total km/week: Mean=24.54, SD=4.31) and children that watched above 5h TV per day, (number of steps/week: Mean=37753.25, SD= 2975.89 and km/week: Mean=15.07, SD=1.18). Consequently, ΒMI is not a perfect predictor for preschool aged children to show any differentiations in relation to older children. However a negative association is possible to exist between physical activity and hours of TV watching at a sensitive time period.

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