Producción Científica
https://hdl.handle.net/20.500.12728/119
2024-03-28T11:36:43Z
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Association of daily steps on lipid and glycaemic profiles in children: The mediator role of cardiorespiratory fitness
https://hdl.handle.net/20.500.12728/10299
Association of daily steps on lipid and glycaemic profiles in children: The mediator role of cardiorespiratory fitness
Martínez-Vizcaíno, Vicente; Sequí-Domínguez, Irene; Rodríguez-Gutiérrez, Eva; Bizzozero-Peroni, Bruno; Martinez-Madrid, Vanesa; Prada de Medio, Enrique; Martínez-García, Irene; Cavero-Redondo, Ivan
Aim: To analyse, in schoolchildren, the relationship between daily steps with metabolic parameters; and to examine whether this association is mediated by cardiorespiratory-fitness (CRF). Methods: A cross-sectional analysis of baseline data from a feasibility trial was performed in children from two primary schools in Cuenca, Spain. Daily steps were measured using the Xiaomi MI Band 3. Lipid and glycaemic profiles were analysed from blood samples. CRF was assessed using the 20-m shuttle run test. ANCOVA models were used to test the mean differences by daily steps quartiles. Mediation analyses were conducted to examine whether CRF mediates the association between daily steps and lipid and glycaemic parameters. Results: A total of 159 schoolchildren (aged 9–12 years, 53% female) were included in the analysis. Schoolchildren in the highest daily steps quartiles (>10 000 steps) showed significantly lower triglycerides and insulin levels (p = 0.004 and 0.002, respectively). This association did not remain after controlling for CRF. In mediation analyses, a significant indirect effect was observed through CRF in the relationship between daily steps with triglycerides and insulin. Conclusion: Children who daily accumulate more than 10 000 steps have better lipid and metabolic profile, and CRF mediated their relationship in schoolchildren. © 2023 The Authors. Acta Paediatrica published by John Wiley & Sons Ltd on behalf of Foundation Acta Paediatrica.
2024-01-01T00:00:00Z
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A preliminary study of chemical properties in temperate forest fire of the Chilean Andean range for planning of ecosystems restoration
https://hdl.handle.net/20.500.12728/10259
A preliminary study of chemical properties in temperate forest fire of the Chilean Andean range for planning of ecosystems restoration
Moreno, Roberto; Rabert, Claudia; Tapia-Valdebenito, Daisy; Sàez, Julian; Castro, Rodrigo; Esse, Carlos; Molina Martìnez, Juan Ramòn
Despite vegetation in fire-prone landscapes having different fire adaptations, a change in the worldwide fire regime could affect all ecosystem processes and systems. In this sense, soil systems play a key role in ecosystems, not only providing inorganic nutrients to plants, but also serve as filter water and carbon storage. The aim of this research was to identify the effects of wildfire on the chemical properties of young volcanic soils over the medium-term in two natural protected areas of Andean Mountain range. A comparative statistical analysis was performed to identify significant differences in different soil parameters between forty-eight unburned and burned soil samples. Therefore, significant differences were identified between evaluated samples in organic matter, macronutrients, micronutrients, and cation exchange capacity. Whilst organic soil matter and potassium content substantially increased due to incomplete vegetation combustion; the presence of calcium content and cation exchange capacity decreased with the occurrence of fire. Our findings showed that there were significant differences between unburned soils or a soil that had been burned once and soil that had been burned twice in thirteen years. These findings should support decision making, improving the selection of passive or active restoration actions and thus efficiency in forest management.
2022-01-01T00:00:00Z
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Models of ethnic identity. Aymara intellectual discourse in the extreme north of Chile
https://hdl.handle.net/20.500.12728/10258
Models of ethnic identity. Aymara intellectual discourse in the extreme north of Chile
González González, Jaime
The article analyzes the models of ethnic identity present in the oral language of Aymara intellectuals from the extreme north of Chile. The research question is what are the main characteristics of these notions of ethnic identity in the spoken behavior of these indigenous intellectuals? Two hypotheses are suggested: 1) that they are notions managed by these intellectuals, and 2) that they are meanings produced by this indigenous intelligentsia. The investigation contemplates twelve oral testimonies of Aymara intellectuals. The main results report that indigenous discourses present a set of ethnic identity models that oscillate between their own conceptual production and the reproduction of foreign ideas. It is concluded that the registered models account for notions similar to those ascribed to Western thought, such as those of “culture”, “tradition” and “nation”
2022-01-01T00:00:00Z
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The mediation role of social network size and perception in the association between physical activity and depressive symptoms: a prospective analysis from the SHARE study
https://hdl.handle.net/20.500.12728/10257
The mediation role of social network size and perception in the association between physical activity and depressive symptoms: a prospective analysis from the SHARE study
Werneck, André O.; Cunha, Paolo M.; Silva, Danilo R.
Objectives: To investigate the mediating role of social network size and perceived quality in the associations of physical activity with quality of life and depressive symptoms in middle-aged and older adults. Method: We analyzed information of 10,569 middle-aged and older adults from waves 2 (2006–2007), 4 (2011–2012), and 6 (2015) of the Survey of Health, Ageing, and Retirement in Europe study (SHARE). Data on physical activity (moderate and vigorous intensities), social network (size and quality), depressive symptoms (EURO-D scale), and quality of life (CASP) were self-reported. Sex, age, country of residency, schooling, occupational status, mobility, and baseline values of the outcome were used as covariates. We created mediation models to test the mediating effect of social network size and quality in the association between physical activity and depressive symptoms. Results: Social network size partly mediated the association between vigorous physical activity and depressive symptoms (7.1%; 95%CI: 1.7–12.6) as well as the association between moderate (9.9%; 1.6–19.7) and vigorous (8.1%; 0.7–15.4) physical activity and quality of life. Social network quality did not mediate any of the associations tested. Conclusion: We conclude that social network’s size, but not satisfaction, mediates part of the association of physical activity with depressive symptoms and quality of life in middle-aged and older adults. Future physical activity interventions among middle-aged and older adults should consider increasing social interactions to facilitate benefits for mental health-related outcomes.
2023-01-01T00:00:00Z