607 research outputs found
The role of heart rate on the associations between body composition and heart rate variability in children with overweight/obesity : the ActiveBrains project
Background: Heart rate variability (HRV) is negatively associated with body mass index and adiposity in several populations. However, less information is available about this association in children with overweight and obesity, especially severe/morbid obesity, taking into consideration the dependence of HRV on heart rate (HR).
Objectives: (1) to examine associations between body composition measures and HRV, (2) to study differences in HRV between children with overweight and severe/morbid obesity; and (3) to test whether relationships and differences tested in objectives 1 and 2, respectively are explained by the dependency of HRV on HR.
Methods: A total of 107 children with overweight/obesity (58% boys, 10.03 +/- 1.13 years) participated in this study. Body composition measures were evaluated by Dual-energy X-ray absorptiometry (DXA). HRV parameters were measured with Polar RS800CXR (R).
Results: Body composition measures were negatively associated with HRV indicators of parasympathetic activity (beta values ranging from -0.207 to -0.307, all p 0.05).
Conclusion: All associations between adiposity/obesity and HRV could be explained by HR, suggesting a key confounding role of HR in HRV studies in children with weight disturbances
hytochemical and nutritional properties of dried leaf powder of Moringa oleifera Lam. from machala el oro province of ecuador
Moringa oleífera commonly called Moringa, is a valuable tree whose fruits, roots and leaves have been advocated for traditional, medicinal and industrial uses. The phytochemical and nutritional properties of the dried leaf powder of M. oleifera used as nutraceuticals, dietary supplements, functional foods or a source of vegetable in meal preparation were investigated in this study to scientifically provide an empirical evidence for its use and benefits. Using standard phytochemical screening procedures the phytochemicals identified were tannins, saponins, alkaloids, flavonoids, cardiac glycosides and reducing sugars. The physico-chemical analysis using standard official methods and gas chromatography revealed the following nutrients; proteins (24.31%), carbohydrate (55.97%), ashes (11.50%), crude fiber (10.28%), total fat (9.22%), moisture (6.12 %), caloric value (404.10 Kcal/100g) and saturated fatty acids (3.77 %), unsaturated fatty acids (5.45 %), monounsaturated fatty acids (0.87 %), polyunsaturated fatty acids (4.58 %) and Trans fatty acid (0.00 %) for fatty acid profile. Using acid hydrolysis and ion-exchange chromatography, the amino acid analysis report showed the presence of essential and semi essential amino acids in varying amounts with a total of 27.16 nmol at 570nm and proline was 1.432 nmol at 440nm. These findings have far reaching nutritional importance in the healthcare system of this country and will help to address undernutrition in acost effective manner. Thus, the use of M. oleifera leaves as nutrients should be encouraged and sustained in this and other countries
Coronary Intimal Thickening: Once Again
In a letter to the Editor, Briana and Malamitsi-Puchner1 commented our recently published paper in which we showed that intimal thickening already begins in fetal life and progresses through childhood and adolescence.2 Our work is in line with studies by Barker about the fetal origins of adult disease which led to The Barker Hypothesis, indicating that the pathogenesis of cardiovascular (CV) disease begins in utero.3Briana et al.1 recently evaluated cord blood serum for potentially prognostic biomarkers for CV disease in large-for-gestational-age compared with appropriate-for-gestational-age neonates. Among other biomarkers, the authors studied serum cardiotrophin-1, a cardiomyocyte-produced chemokine that plays a fundamental role in fetal heart development and whose expression is increased by hypoxia, mechanical stress and proinflammatory cytokines such as interleukin (IL) 1b. The authors1 also studied serum levels of cardiac myocytesarcomeral protein titin, involved in sensing and responding to myocardial stress. As a result, Briana et al.1 propose that cord blood serum concentrations of both cardiotrophin-1 and titin could represent prognostic biomarkers for future CV disease.4In addition, another study by Milei et al.5 analyzed autopsy heart samples from 22 fetal sudden intrauterine death and 36 sudden infant death victims, all between the 32nd week of gestation and 1year of age. In 28 out of 58 cases, the mothers were smokers. Coronary lesions were detected in 10 of 12 fetuses and in 15 of 16 infants whose mothers smoked, while only 5cases (2 of 10 fetuses and 3 of 20 infants) arterial lesions were found in cases of nonsmoking mothers (p 1 artery, compared with 25% in the CoHD patients without surgery (p<0.001). Hence, these results suggest a higher rate of coronary intimal hyperplasia in surgically repaired CoHD patients as compared with non-repaired ones.6 This high incidence was correlated with intimal decrease in estrogen receptor α (ERα) expression, an increment in transforming growth factor β1 (TGF-β1) expression and in apolipoprotein B (apoB) deposition, which allowed us to conclude that a decrease in ERα and augmented expression of TGF-β1 expression may contribute to the development of atherosclerotic coronary artery disease in CoHD patients.6,7 A case report illustrating our findings described an aneurysm in the left main coronary artery of a 2-year-old patient. This aneurysm presented intimal hyperplasia and strong apoB deposition.8As mentioned in the Briana and Malamitsi-Puchner letter,1 it is important to search for early biomarkers of CV disease at an early age in order to implement preventive strategies. In this regard, we suggest that special attention should be given to children of smoking mothers and to CoHD patients, particularly if they underwent reparative surgery.Fil: Castilla Lozano, Maria del Rocio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Cardiológicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Cardiológicas; ArgentinaFil: Gutierrez, Christopher P. A.. Universidad de Buenos Aires; ArgentinaFil: Azzato, Francisco. Universidad de Buenos Aires; ArgentinaFil: Ambrosio, Giuseppe. Università di Perugia; ItaliaFil: Milei, Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Cardiológicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Cardiológicas; Argentin
Effect of different dietary vitamin E levels on growth, fish composition, fillet quality and liver histology of meagre (Argyrosomus regius)
Seven experimental isonitrogenous (50%) and isolipidic (16%) diets with different levels of α-tocopherol acetate (16, 100, 190, 285, 430, 880 and 1300 mg kg−1) were tested during 72 days to evaluate growth performance, tissue composition, fillet oxidation and liver histology in meagre juveniles, Argyrosomus regius. Growth performance, feed conversion ratio (FCR) and tissue composition were similar among treatments (P>0.05). In the liver, no major differences were recorded in lipid and fatty acid composition but higher lipid vacuolization were observed in diets E100, E190 and E880. Muscle fatty acid profiles showed an increment of the highly unsaturated fatty acid (HUFA) and a decrease of the saturated fatty acid with the increase of dietary vitamin E, which was accompanied with a reduction of the muscle TBARS responses. Therefore, is suggested that diets for this species should be supplemented with 451mg kg−1of DL-α-tocopherol acetate (496 UI of vitamin E), as determine by broken-line regression analysis of muscle TBARS, to provide good overall growth performance and improved fish quality and storage stability. Moreover, results suggest that vitamin E deficiency or excess may deteriorate fish health. Statement of relevance The optimization of the dietary vitamin E level will contribute to formulate a suitable diet for meagre, a candidate for European aquaculture diversification, that until now is being fed with diets specific for other species. This study will narrow the knowledge gap that exists regarding meagre nutritional needs
La organización de actividades físicas para personas mayores según los beneficios buscados por los practicantes
En la literatura sobre marketing deportivo para las personas mayores (Atkinson, 2007; Ryan, 2007) hay plena coincidencia en señalar la importancia de conocer previamente al diseño de los programas y servicios, cuáles son los beneficios buscados por las personas interesadas. Por ello el objetivo principal de esta investigación ha consistido en estudiar cuáles son esos beneficios buscados y si existen algunas diferencias entre las mujeres y los varones practicantes de actividad física, que convendría tener en cuenta en el diseño de los programas para ambos segmentos
Imaging Atmospheric Cherenkov Telescopes pointing determination using the trajectories of the stars in the field of view
38th International Cosmic Ray Conference (ICRC2023), 26 July - 3 August, 2023, Nagoya, Japan.Mykhailo Dalchenko and Matthieu Heller on behalf of the CTA-LST Project.
Luis del Peral Gochicoa, Jose Julio Lozano Bahilo and Maria Dolores Rodriguez Frias belong to the CTA-LST Project.We present a new approach to the pointing determination of Imaging Atmospheric Cherenkov
Telescopes (IACTs). This method is universal and can be applied to any IACT with minor
modifications. It uses the trajectories of the stars in the field of view of the IACT’s main camera
and requires neither dedicated auxiliary hardware nor a specific data taking mode. The method
consists of two parts: firstly, we reconstruct individual star positions as a function of time, taking
into account the point spread function of the telescope; secondly, we perform a simultaneous
fit of all reconstructed star trajectories using the orthogonal distance regression method. The
method does not assume any particular star trajectories, does not require a long integration time,
and can be applied to any IACT observation mode. The performance of the method is assessed
with commissioning data of the Large-Sized Telescope prototype (LST-1), showing the method’s
stability and remarkable pointing performance of the LST-1 telescope
Una nueva fuente de clientes senior para las organizaciones deportivas: la recomendación médica de actividad física
Las organizaciones de ocio y deportivas han empezado hace pocos años a incorporar a su segmentación a las personas mayores, al ver en ellas amplias oportunidades de crecimiento (Sniadek, 2006). Uno de los canales de marketing (Vogel, 2007) que podrían emplear serían las actuaciones explícitas y sistemáticas de recomendación de actividad física regular por parte de los médicos. Algunos estudios locales ya han evidenciado la influencia positiva de dichas actuaciones (Jiménez-Beatty et al., 2007). Sin embargo todavía no se ha efectuado un estudio de dicha influencia en una muestra representativa de la población de personas mayores en España. En ese contexto, el objetivo del presente estudio es investigar si existe relación entre la prescripción de actividad física por parte de los médicos y la práctica de actividad física de las personas mayores
MOOCs of inclusive technology in teacher education for vocational education
Technology is a strong ally the transformation and adaptation of new knowledge, through the use of technology environments as virtual learning environments and virtual reality environments can be made more dynamic learning. This work is part of the training of teachers who work in vocational courses so that they can work with people with disabilities and insert them into the labor market, adapting their job according to your needs. For this we used technological resources that assist in training and make this more dynamic training, adapting to Massive Open Online Course (MOOCs). The technological environment developed as well as the selected learning objects were made available to participants. Questionnaires regarding usability and functionality were performed, allowing to generate an overview of the training provided to these teachers
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