16 research outputs found

    Childhood obesity treatment; Effects on BMI SDS, body composition, and fasting plasma lipid concentrations

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    <div><p>Objective</p><p>The body mass index (BMI) standard deviation score (SDS) may not adequately reflect changes in fat mass during childhood obesity treatment. This study aimed to investigate associations between BMI SDS, body composition, and fasting plasma lipid concentrations at baseline and during childhood obesity treatment.</p><p>Methods</p><p>876 children and adolescents (498 girls) with overweight/obesity, median age 11.2 years (range 1.6–21.7), and median BMI SDS 2.8 (range 1.3–5.7) were enrolled in a multidisciplinary outpatient treatment program and followed for a median of 1.8 years (range 0.4–7.4). Height and weight, body composition measured by dual-energy X-ray absorptiometry, and fasting plasma lipid concentrations were assessed at baseline and at follow-up. Lipid concentrations (total cholesterol (TC), low-density lipoprotein (LDL), high-density lipoprotein (HDL), non-HDL, and triglycerides (TG)) were available in 469 individuals (264 girls). Linear regressions were performed to investigate the associations between BMI SDS, body composition indices, and lipid concentrations.</p><p>Results</p><p>At baseline, BMI SDS was negatively associated with concentrations of HDL (<i>p</i> = 6.7*10<sup>−4</sup>) and positively with TG (<i>p</i> = 9.7*10<sup>−6</sup>). Reductions in BMI SDS were associated with reductions in total body fat percentage (<i>p</i><2*10<sup>−16</sup>) and percent truncal body fat (<i>p</i><2*10<sup>−16</sup>). Furthermore, reductions in BMI SDS were associated with improvements in concentrations of TC, LDL, HDL, non-HDL, LDL/HDL-ratio, and TG (all p <0.0001). Changes in body fat percentage seemed to mediate the changes in plasma concentrations of TC, LDL, and non-HDL, but could not alone explain the changes in HDL, LDL/HDL-ratio or TG. Among 81 individuals with available lipid concentrations, who increased their BMI SDS, 61% improved their body composition, and 80% improved their lipid concentrations.</p><p>Conclusion</p><p>Reductions in the degree of obesity during multidisciplinary childhood obesity treatment are accompanied by improvements in body composition and fasting plasma lipid concentrations. Even in individuals increasing their BMI SDS, body composition and lipid concentrations may improve.</p></div

    The Reconstruction and Construction of a Technological Unit in an Open Pit Mine

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    Import 23/08/2017Diplomová práce se zabývá problematikou provozní situace na povrchovém lomu a předkládá podrobně zpracovaný návrh technického řešení. Práce je především zaměřena na návrh rekonstrukce a výstavbu technologického celku na výkonnostní úrovni TC-1 a řeší technické úpravy jednotlivých strojů zařazených do tohoto celku. Součástí návrhu je podrobný výpočet parametrů pásových dopravníků a technické řešení výstavby obslužných a dopravních komunikací. Výsledným požadavkem je plnohodnotně navržený a provozně funkční technologický celek na výkonnostní úrovni TC – 1, který je určen pro těžbu skrývkových hmot na nové lokalitě.This Diploma Thesis deals with problems of operating situation on surface quarry and provides elaborated proposal for technical solution in details. The thesis is focused mainly on proposal for reconstruction and building of technological unit on efficiency level TC-1 and solves technical adjustments of individual machines included to this unit. Part of the proposal is also detailed calculation of belt transport´s parameters and technical solution of construction of service and traffic roads. As a result requirement is fully designed and operationally functional technological unit on performance level TC-1 which is determined for mining of overburden materials in new location.542 - Institut hornického inženýrství a bezpečnostivýborn

    Associations between changes in BMI SDS and body composition variables.

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    <p>Plots showing the correlation between changes in BMI SDS and changes in ¿ SDS, ¿, %TBF, FFMI SDS, and FFMI. BMI: body mass index. ¿: total body fat percentage. %TBF: truncal body fat percentage. FFMI: fat free mass index. SDS: standard deviation score.</p
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