No abstract

Common alimentary obesity frequently occurs on a polygenic basis as a typical lifestyle disorder in the developed countries. It is associated with characteristic complex metabolic changes, which are the cornerstones for future metabolic syndrome development. The aims of our study were 1) to determine the incidence of metabolic syndrome (based on the diagnostic criteria defined by the International Diabetes Federation for children and adolescents) in Czech obese children, 2) to evaluate the incidence of insulin resistance according to HOMA-IR and QUICKI homeostatic indexes in obese children with and without metabolic syndrome, and 3) to consider the diagnostic value of these indexes for the early detection of metabolic syndrome in obese children. We therefore performed anthropometric and laboratory examinations to determine the incidence of metabolic syndrome and insulin resistance in the group of 274 children with obesity (128 boys and 146 girls) aged 9-17 years. Metabolic syndrome was found in 102 subjects (37 %). On the other hand, the presence of insulin resistance according to QUICKI <0.357 was identified in 86 % and according to HOMA-IR >3.16 in 53 % of obese subjects. This HOMA-IR limit was exceeded by 70 % children in the MS(+) group, but only by 43 % children in the MS(–) group (p<0.0001). However, a relatively high incidence of insulin resistance in obese children without metabolic syndrome raises a question whether the existing diagnostic criteria do not falsely exclude some cases of metabolic syndrome. On the basis of our results we suggest to pay a preventive attention also to obese children with insulin resistance even if they do not fulfill the actual diagnostic criteria for metabolic syndrome.

The aim of the study was to compare the differences in anthropometric parameters, maximal oxygen uptake (VO₂max) and physical activity (PA) between groups of 146 obese boys and 128 obese girls. We tried to describe the relationships between changes in PA and changes in VO₂max, body fat, weight, waist circumference and hip circumference. We found statistically significant changes in VO₂max and waist circumference only in the group of boys and significant changes in VO₂max in the group of girls.

ABSTRAKTCíl: Práce se zabývá porovnáním posturální stability u dvou vybraných souborů probandů, a to u dětí s obezitou a u atletů. Metody: U obou skupin bylo provedeno posturografi cké vyšetření pomocí dvou testů -Limity stability v náklonu tzv. Limits of Stability (LOS) a Senzorický test -Sensory Organisation Test (SOT). Na základě takto získaných výsledků byly porovnány a statisticky vyhodnoceny rozdíly mezi jednotlivými soubory. Výsledky: Práce prokázala významný vliv obezity na individuální posturální stabilitu jedince. Prokázali jsme statisticky signifi kantní rozdíly jak v reakčním čase (RT) a maximální exkurzi při testu LOS, tak i ve volbě pohybových strategií pro udržení posturální stability při testu SOT. Závěry: U dětí s obezitou je, v rámci fyzioterapie, vhodné zaměřit pohybovou aktivitu na zlepšení celkové postury a posturální stability a to např. využitím funkčního tréninku.ABSTRACT Aim: Th e paper deals with the comparison of postural stability in two selected groups of probands: children with obesity and athletes. Methods: Posturographic examination was carried out in both groups through two tests -Limits of Stability (LOS) and Sensory Organization Test (SOT). Variations between individual groups were compared and statistically evaluated based on the acquired results. Results: Obesity as well as overall posture has a signifi cant impact on postural stability. We demonstrated statistically signifi cant variations in reaction time (RT) and maximum excursion in LOS test, and in SOT test in the choice of movement strategies for maintaining postural stability. Conclusions: It would be appropriate as part of physiotherapy to focus physical activities in children with obesity on improving postural stability by e. g. using functional training.KLÍČOVÁ SLOVA posturální stabilita, fyzioterapie, obezita, pohybová aktivita KEY WORDS postural stability, physiotherapy, obesity, physical activity

The study showed a statistically significant effect of comprehensive group therapy for obesity in terms of reductions in waist circumference, body weight and BMI, and thus the overall reduction of both cardiovascular and metabolic risks, as well as improved postural skills (activity and reactions).