Sex differences in physical fitness are evident at an early age; in addition, the relationship between physical fitness and BMI is inconsistent in preschool children. The improvements of physical fitness performance and its association with physical activity could be important for the health of children, particularly in obesity prevention.

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Resumen. La etapa universitaria representa un periodo de riesgo en la configuración de hábitos saludables de cara a la vida adulta, especialmente por el deterioro que sufre el modelo dietético de este sector y el elevado consumo de sustancias dañinas como son las drogas legales. Este estudio pretende determinar el nivel de consumo de tabaco y alcohol, así como el nivel de adherencia a la Dieta Mediterránea (DM) y el lugar de residencia de un sector de población universitaria, estableciendo patrones de relación entre estas variables. Se evaluaron 490 estudiantes universitarios de la Universidad de Granada (M=22,8 años; DT=3,639), utilizándose los instrumentos FTND, AUDIT y KIDMED. Los resultados determinaron que cuatro quintos de la muestra era no fumadora, mientras que 9 de cada 10 participantes si se asociaban con algún tipo de dependencia hacia el alcohol. En cuanto a su alimentación, tres quintos del total seguían una dieta de calidad media-baja que debería mejorar. Se encontraron diferencias estadísticas entre el consumo de tabaco y alcohol, asociándose prácticamente la totalidad de fumadores a algún tipo de dependencia hacia bebidas alcohólicas. No se determinaron asociaciones estadísticamente significativas entre el consumo de sustancias nocivas, la adhesión a la DM y el lugar de residencia de la muestra. Se justifica el interés de plantear iniciativas que promuevan hábitos físico-saludables entre adultos jóvenes. Palabras clave: Universitarios; alcohol; tabaco; dieta mediterránea; residencia.[en] Descriptive analysis of toxic substance consumption, adherence to the Mediterranean diet and type of residence in university students from Granada Abstract. University years represent a period of risk in the configuration of healthy habits into adulthood, especially due to the deterioration of the dietary pattern of this sector and the high consumption of harmful substances such as legal drugs. This study aims to determine the level of consumption of tobacco and alcohol, as well as the level of adherence to the Mediterranean Diet (MD) and the place of residence of this sector of population, establishing patterns of relationship between these variables. 490 students (M=22,8 years old, SD=3,639) from the University of Granada were evaluated using the

Background: The aim of this study was to analyse the validity and accuracy of the low-cost Xiaomi Mi Band 4 (MB4) fitness tracker in relation to step count and heart rate in free-living conditions. Methods: 46 participants join in this study (38.65 ± 14.36 years old). The MB4 was compared with a video recording in laboratory conditions, also with the Sense Wear and Firstbeat monitors in free-living conditions. Results: No significant differences were found in the number of steps in the laboratory protocol between devices, in both, at low and high walking speed. For the free-living conditions, the MB4 showed high values of convergent validity in relation to the Firstbeat monitor during recording in both rest and walking situations. Moreover, the MB4 showed adequate values of convergent validity with the Sense Wear monitor during the 24 h recording, at medium speeds, and climbing stairs. Conclusion: The accuracy and precision of the MB4 is reasonable and can be used to monitor the average of step count and heart rate in free-living conditions.

Elección de titulación universitaria y expectativas de resultados de los adolescentes Asunción Martínez Martínez et.al.