The purpose of this cross-cultural study was to determine the association between the sociodemographic background of a child’s parents (i.e., their socioeconomic level, marital status, and educational level) with the child’s lifestyle (i.e., Mediterranean diet (MD), physical activity (PA) and screen time (ST)), and health markers. Material: This cross-sectional study included 1273 children, from Chile (n = 496), Colombia (n = 340), and Spain (n = 437). The sociodemographic information together with the lifestyle and health markers of the children were measured. There was an inverse association between a low or medium-low socioeconomic level for the parents of Chilean children and handgrip strength (β −0.61, p < 0.001); meanwhile, for Spanish children, an inverse association between a low or medium-low socioeconomic level and PA after school (β −0.58, p = 0.016), lifestyle (β −0.74, p = 0.015), and with MD adherence (β −0.86, p = 0.004) was found. The risk (i.e., by odd ratios (OR)) of being divorced/separated parents marital status showed an inverse association with abdominal obesity (OR 0.21, p = 0.045) in Spanish children; however, the parent’s marital status and a low educational level were risk factors for the suffering of a low nutritional level in Colombian children (OR 2.02, p = 0.048; OR 2.49, p < 0.001, respectively). On the other hand, a low educational level for parents reported for Chilean children had a positive association with ST of ≥4 h per day (OR 1.82, p = 0.020). In conclusion, in Spanish-speaking children, the lifestyle and health markers of the children are affected by the sociodemographic background of their parents; however, these effects could be moderated by the socio-cultural and economic status of their countries as members of the OCDE; therefore, it is essential to develop policies that decrease these gaps, so that children who are under-resourced can reach their full potential.

Objectives: To evaluate an association between eating patterns and sleep quality in Chilean university students. Methods: A cross-sectional analytical study was conducted. Participants included students from 4 Chilean universities. Each student was administered survey Questionnaire on the frequency of healthy and unhealthy eating habits and Pittsburgh Sleep Quality Index and their weight and height were taken to obtain the Body Mass Index (BMI). Results: A total of 1,079 young university students, 80.26 % were women and the average age was 21.7 years. The 73.68 % have inadequate sleep quality. There is a significant differences in frequency between sleep quality and the intake of breakfast (p<0.001), fish (p<0.05) and dinner (p<0.05), that is, university students who reported optimal sleep consume breakfast and dinner on a daily basis and their fish intake is in line with nutritional recommendations. With respect to the association between sleep quality and healthy dietary patterns, it is observed a significant association (p<0.01) between optimal sleep and daily breakfast consumption in model 3 (Odds Ratio (OR): 0.61 (0.46–0.82)). Regarding unhealthy dietary patterns, a significant association (p<0.05) is observed in model 3 between sleep quality and alcohol consumption (OR: 1.42 (1.02–1.96)). Furthermore, a significant association between optimal sleep and salt consumption is observed in both model 2 (OR: 0.73 (0.54–0.99)) and model 3 (OR: 0.72 (0.53–0.97)). Finally, a significant relationship between not tobacco use and optimal sleep is observed (OR: 0.68 (0.48–0.96)). Conclusion: A positive relationship between healthy diet and sleep quality was observed in university students, which certain dietary patterns, such as the consumption of breakfast and low salt consumption and alcohol, are crucial to talk about a good sleep quality in this population group.

En general los docentes universitarios se encuentran en constantes transformaciones y exigencias, lo que puede generar estrés, originado por las altas demandas laborales propias del desempeño académico en las universidades. Es el caso de los docentes universitarios chilenos que imparten docencia en modelos curriculares competenciales, en el cual estudiante es el actor fundamental de toda acción educativa, lo que conlleva un cambio en las estrategias didácticas y metodológicas en la formación inicial profesional, en especial las facultades de Educación que forman profesores. El objetivo de este trabajo, es describir los niveles de actividad física (NAF), síndrome de burnout (SB) y su relación con el bienestar docente. Investigación de tipo descriptivo relacional, de tipo transversal, muestra no probabilística. La muestra estuvo conformada 54 docentes, que fueron evaluados mediante el cuestionario “Maslach Burnout Inventory” (MBI), cuestionario Internacional de Actividad Física (IPAQ), se evaluó Índice Masa Corporal (IMC) y Frecuencia Cardiaca Reposo (FCr). En el estudio se presentaron valores que representan el 59,3 % total de la muestra con presencia y riesgo para el caso de Síndrome Burnout, existiendo una correlación baja y no significativa 0,094 entre las variables. Es de suma importancia que las casas de estudios superiores en Chile implementen políticas de bienestar docente que impliquen de forma integral diseñar programas teniendo en mente la satisfacción de las necesidades psicológicas de los profesionales.

Introduction. Professional practice is a relevant process for the personal and academic development of students. It uses learning contexts located in real scenarios and enables the acquisition of knowledge, skills, and competencies necessary for professional practice. Objective. To design and validate an instrument designed to evaluate students' satisfaction with theirprofessional practice process. Materials and methods. Mixed-method study, non-probabilistic sample by convenience of 196 participants. The sample is formed by 20 Nutritionists and 176 students belonging to the Nutrition and Dietetics undergraduate program. The statistical software SPSS version 22 was used to analyze reliability by Cronbach's alpha and the Delphi method for content validity. An instrument with 32 items grouped in 4 dimensions was elaborated and applied to 116 students to analyze reliability. The instrument was adjusted to 25 items, and content validity was analyzed by a panel of experts. The judge’sconsensus was the foundation for developing a 29-item version grouped into 4 dimensions. This version was applied to 60 students to obtainCronbach's alpha validation. Results. The instrument presents an excellent level of reliability, with a Cronbach's Alpha coefficient of 0.927. Conclusions. The instrument designed to measure satisfaction with professional practices is a reliable and valid measure, since it allows knowing the students ‘evaluation at the end of their professional practice process.

Background: Intermittent normobaric hypoxia (INH) has been proposed as a strategy to increase physiological stress while maintaining a relatively low external mechanical workload. However, the acute physiological responses elicited during standardized INH combined with low-intensity exercise remain incompletely characterized in elite cyclists. Objective: Our objective is to characterize the acute physiological responses during a standardized intermittent normobaric hypoxia session while maintaining a constant individualized external mechanical workload in elite cyclists. Methods: Ten professional and semi-professional male cyclists (30.4 ± 11.8 years) completed a prospective, single-group experimental protocol with a within-subject repeated-measures design, consisting of a Zone 2 warm-up under normoxia followed by three 10 min intermittent normobaric hypoxia cycles (FiO₂ 15–16%; simulated altitude 2400–2900 m), each separated by 5 min of normoxic recovery. Blood lactate, muscle oxygen saturation (SmO₂), arterial oxygen saturation (SpO₂), and heart rate (HR) were assessed across the experimental protocol. Results: External power output remained stable throughout the protocol (~212 W). Blood lactate increased significantly across experimental phases (F(4,28) = 72.70, p < 0.001, η²_p = 0.912), while muscle oxygen saturation progressively decreased (p < 0.001). Heart rate also increased progressively across experimental phases (p < 0.001). Arterial oxygen saturation declined during hypoxic exposure and remained stable across successive hypoxic cycles (p = 0.83). Two Cycle 3 blood lactate measurements exceeded the validated analytical range of the analyzer (>25 mmol·L⁻¹) and were treated as right-censored observations. Conclusions: Under the experimental conditions of this exploratory single-group study, a standardized intermittent normobaric hypoxia session combined with constant low-intensity exercise was associated with substantial acute changes in blood lactate concentration, muscle oxygenation, and heart rate despite stable external mechanical workload. These findings characterize the acute physiological responses observed during intermittent normobaric hypoxia and support further randomized controlled studies including matched normoxic conditions, individualized hypoxic titration, and continuous cardiopulmonary monitoring to better understand the physiological mechanisms underlying these responses.

To analyze the relationship of sprinting and agility with body composition, adiposity, and so-matotype in young Chilean basketball players. Material and Method: The research design is non-experimental, descriptive transectional. 20 Chilean under-14 category basketball teams par-ticipated, and their anthropometric characteristics were evaluated using a scale and a stadiome-ter. Their speed and agility were measured through the use of photocells during field tests. The relationship between the variables was established with the Pearson correlation coefficient. In addition, a simple linear regression analysis was carried out, where R, R2, the standard error of estimation (SEE) and the unstandardized beta coefficient (β). All analyses were performed using SPSS statistical software IBM Corp. version 17.0, considering a significance level of p < .05. Re-sults: A direct and positive correlation is observed between the Illinois agility test and the an-thropometric indicators of body weight (r=0.75; p˂0.01) and height (r=0.48; p˂0.05). Likewise, a positive relationship was found between the agility test and the adiposity parameter, ∑ folds (r=0.71; p˂0.01), while an inverse and negative relationship was found with ectomorphism (r= -0.46; p˂ 0.05). Furthermore, a direct and positive correlation is observed between endomor-phism and the 5 m sprint (r=0.62; p˂0.01) and the 10 m sprint (r=0.60; p˂0.01). Conclusion: There is a significant relationship between body composition and the physical abilities of sprinting and agility in young Chilean basketball players.