Alexandra Valencia-Peris

Comparison of physical activity and sedentary behaviours between young haemophilia A patients and healthy adolescents

Summary.  In recent studies, adolescent haemophilia A patients and healthy adolescents have been encouraged to participate in physical activity (PA) based on its many established health benefits. However, none of the studies to date has used objective measures of PA and sedentary behaviour. The aims of the current study included: (i) to determine the amount and intensity of habitual PA among haemophilia A and healthy adolescents, and in haemophilia A patients with and without bleeding episodes in the previous year, and (ii) to identify the type and determine the time spent in sedentary activities in which both groups participate to obtain a broadened view of their daily activities. A total of 41 adolescent haemophiliacs and 25 healthy adolescents, between the ages of 8 and 18 years, participated in this cross‐sectional study. A triaxial accelerometer was used to measure PA and the Adolescent Sedentary Activity Questionnaire to assess sedentary behaviours among members of both groups. Adolescent haemophilia A patients showed a higher daily mean time engaged in light, moderate and moderate‐to‐vigorous PAs relative to their healthy counterparts (P < 0.001). Patients who had experienced bleeding episodes during the previous year also spent more time participating in vigorous PAs than healthy adolescents (P = 0.002). With regard to sedentary behaviours, healthy adolescents spent more time listening to music than haemophilia A adolescents (P = 0.003), whereas haemophilia A adolescents spent more time watching TV (P < 0.001) and playing videogames (P = 0.003) than healthy counterparts. Findings suggest that increased participation in moderate intensity PAs and reduced sedentary behaviours should be recommended among adolescents with haemophilia A.

Harassment patterns and risk profile in Spanish trans persons

ABSTRACT This article describes the harassment patterns and the risk profile in trans people living in Spain. A sample of 212 trans persons, aged 10–62, participated in this cross-sectional study. Results showed a high percentage of harassment (59.9%) and frequency of daily harassment (12.6%), especially verbal attacks (59%) that occurred in public spaces (49.1%) and within educational contexts (46.2%). Harassment is more prevalent in trans women than men. Those who disclose their gender identities at a younger age experience higher percentages and frequency of harassment than those who disclose at an older age. They also suffer more harassment of different types. The risk profile of harassment indicates that older trans women are more likely to suffer harassment than younger ones, and the risk decreases each year they delay their gender identity disclosure. The elimination of transphobic attitudes and the promotion of gender justice should be priority strategies in Spain.

Does Sedentary Behavior Predict Academic Performance in Adolescents or the Other Way Round? A Longitudinal Path Analysis

This study examined whether adolescents’ time spent on sedentary behaviors (academic, technological-based and social-based activities) was a better predictor of academic performance than the reverse. A cohort of 755 adolescents participated in a three-year period study. Structural Equation Modeling techniques were used to test plausible causal hypotheses. Four competing models were analyzed to determine which model best fitted the data. The Best Model was separately tested by gender. The Best Model showed that academic performance was a better predictor of sedentary behaviors than the other way round. It also indicated that students who obtained excellent academic results were more likely to succeed academically three years later. Moreover, adolescents who spent more time in the three different types of sedentary behaviors were more likely to engage longer in those sedentary behaviors after the three-year period. The better the adolescents performed academically, the less time they devoted to social-based activities and more to academic activities. An inverse relationship emerged between time dedicated to technological-based activities and academic sedentary activities. A moderating auto-regressive effect by gender indicated that boys were more likely to spend more time on technological-based activities three years later than girls. To conclude, previous academic performance predicts better sedentary behaviors three years later than the reverse. The positive longitudinal auto-regressive effects on the four variables under study reinforce the ‘success breeds success’ hypothesis, with academic performance and social-based activities emerging as the strongest ones. Technological-based activities showed a moderating effect by gender and a negative longitudinal association with academic activities that supports a displacement hypothesis. Other longitudinal and covariate effects reflect the complex relationships among sedentary behaviors and academic performance and the need to explore these relationships in depth. Theoretical and practical implications for school health are outlined.

Competing Effects Between Screen Media Time and Physical Activity in Adolescent Girls: Clustering a Self-Organizing Maps Analysis

BACKGROUND Previous research shows contradictory findings on potential competing effects between sedentary screen media usage (SMU) and physical activity (PA). This study examined these effects on adolescent girls via self-organizing maps analysis focusing on 3 target profiles. METHODS A sample of 1,516 girls aged 12 to 18 years self-reported daily time engagement in PA (moderate and vigorous intensity) and in screen media activities (TV/video/DVD, computer, and videogames), separately and combined. RESULTS Topological interrelationships from the 13 emerging maps indicated a moderate competing effect between physically active and sedentary SMU patterns. Higher SES and overweight status were linked to either active or inactive behaviors. Three target clusters were explored in more detail. Cluster 1, named temperate-media actives, showed capabilities of being active while engaging in a moderate level of SMU (TV/video/DVD mainly). In Cluster 2, named prudent-media inactives, and Cluster 3, compulsive-media inactives, a competing effect between SMU and PA emerged, being sedentary SMU behaviors responsible for a low involvement in active pursuits. CONCLUSION SMU and PA emerge as both related and independent behaviors in girls, resulting in a moderate competing effect. Findings support the case for recommending the timing of PA and SMU for recreational purposes considering different profiles, sociodemographic factors and types of SMU.

Longitudinal changes in physical activity, sedentary behavior and body mass index in adolescence: Migrations towards different weight cluster

This study examined longitudinal changes in physical activity, sedentary behavior and body mass index in adolescents, specifically their migrations towards a different weight cluster. A cohort of 755 adolescents participated in a three-year study. A clustering Self-Organized Maps Analysis was performed to visualize changes in subjects’ characteristics between the first and second assessment, and how adolescents were grouped. Also a classification tree was used to identify the behavioral characteristics of the groups that changed their weight cluster. Results indicated that boys were more active and less sedentary than girls. Boys were especially keen to technological-based activities while girls preferred social-based activities. A moderate competing effect between sedentary behaviors and physical activities was observed, especially in girls. Overweight and obesity were negatively associated with physical activity, although a small group of overweight/obese adolescents showed a positive relationship with vigorous physical activity. Cluster migrations indicated that 22.66% of adolescents changed their weight cluster to a lower category and none of them moved in the opposite direction. The behavioral characteristics of these adolescents did not support the hypothesis that the change to a lower weight cluster was a consequence of an increase in time devoted to physical activity or a decrease in time spent on sedentary behavior. Physical activity and sedentary behavior does not exert a substantial effect on overweight and obesity. Therefore, there are other ways of changing to a lower-weight status in adolescents apart from those in which physical activity and sedentary behavior are involved.

Osteogénesis imperfecta y educación física: Un caso inédito de inclusión educativa

espanolEl objetivo principal de este trabajo es indagar en la experiencia de inclusion educativa vivida por una alumna con osteogenesis imperfecta y por sus companeras en una asignatura universitaria con contenidos relacionados con la educacion fisica. La recogida de datos sobre la experiencia se realizo a lo largo de un cuatrimestre a partir de conversaciones informales con el profesor, entrevistas en profundidad y semi-estructuradas, y un cuestionario de respuesta abierta. El estudio revela la estigmatizacion sufrida por la alumna, tanto a nivel personal como academico (sobre todo en las clases de educacion fisica) y el desconocimiento e inseguridad que manifiesta tener el futuro profesorado sobre esta enfermedad y como realizar un tratamiento inclusivo en sus clases. Asimismo, se describen las adaptaciones realizadas por el profesor de la asignatura con el fin de garantizar y ejemplificar la inclusion de una alumna con osteogenesis imperfecta en las clases de educacion fisica. EnglishThe main objective of this work is to investigate the inclusive treatment experienced by a student with Osteogenesis Imperfecta and their peers in an undergraduate course with contents related to physical education. Data collection was performed over a semester through informal conversations with the lecturer, in depth and semi-structured interviews, and an open-response questionnaire. The study reveals the stigma suffered by the student, both personal and academic (especially in physical education classes), and the ignorance and insecurity demonstrated by future teachers about this disease and how to perform an inclusive treatment in their classes. The adjustments made by the lecturer of the course in order to ensure and illustrate with examples the inclusion of a student with Osteogenesis Imperfecta in physical education classes are also described. portuguesO principal objetivo de este trabalho e investigar a experiencia de inclusao educativa vivida por uma aluna com osteogenese imperfeita e por seus pares em uma disciplina universitaria com conteudos relacionados a Educacao Fisica. A coleta de dados foi realizada na experiencia, ao longo de um quadrimestre, a partir de conversas informais com o professor, de entrevistas em profundidade e semiestruturadas e de um questionario de respostas subjetivas. O estudo revela a estigmatizacao sofrida pela estudante, nos niveis pessoal e academico (especialmente em aulas de Educacao Fisica) e o desconhecimento e a inseguranca manifestada pelos futuros professores sobre esta doenca e sobre como realizar um tratamento inclusivo em suas aulas. Alem disso, descrevem-se as adaptacoes realizadas pelo professor da disciplina com a finalidade de garantir e exemplificar a inclusao de uma aluna com osteogenese imperfeita nas aulas de Educacao Fisica.

A PERCEPÇÃO DE ESTUDANTES UNIVERSITÁRIOS DE EDUCAÇÃO FÍSICA SOBRE A AVALIAÇÃO FORMATIVA: VANTAGENS, DIFICULDADES E SATISFAÇÃO

This study aims to know how Physical Education studies during initial training perceive the implementation of a model of formative evaluation, focusing on advantages, difficulties and level of satisfaction. The study was conducted with a sample of 136 students from theSchoolofEducation. The CMEFIEF Scale was applied and descriptive and inferential statistics were conducted. The results show a high level of satisfaction and high appreciation for benefits such as offering alternatives to all students and promoting useful and active learning, while the most important difficulties are related to requirements regarding students’ involvement.

Involvement in sedentary activities and academic performance in adolescents: differences according to sociodemographic variables / Implicación en actividades sedentarias y rendimiento académico en adolescentes: diferencias según variables sociodemográficas

Abstract This study provides a first-time analysis of the differences in the time dedicated each day to different sedentary activities (SA) (productive, technology-based recreation and social activities) and their relation with the academic performance of Spanish adolescents according to sex, school year and socioeconomic status (SES). The sample was made up of 681 participants (50.2% girls), between 12 and 18 years old, who completed self-reported questionnaires. The likelihood of obtaining lower levels of academic success increase in adolescents who spend two or more hours on social SAs and have a lower SES. With boys, this increases further if they spend four or more hours on SAs involving technology-based recreation and two or less hours on productive SAs. In conclusion, adolescents spend a high number of hours carrying out sedentary activities after school. This is something that needs controlling since it may have a detrimental effect on their academic success, especially among adolescent boys.