Activity-related typologies and longitudinal change in physical activity and sedentary time in children and adolescents: The UP&DOWN Study

BackgroundChildren and adolescents can be distinguished by different typologies (clusters) of physical activity and sedentary behavior. How physical activity and sedentary behaviors change over time within different typologies is not known. This study examined longitudinal changes in physical activity and sedentary time among children and adolescents with different baseline typologies of activity-related behavior.MethodsIn this longitudinal study (3 annual time points) of children (n = 600, age = 9.2 ± 0.4 years (mean ± SD), 50.3% girls) and adolescents (n = 1037, age = 13.6 ± 1.7 years, 48.4% girls), participants were recruited in Spain in 2011–2012. Latent class analyses identified typologies based on self-reported screen, educational, social and relaxing sedentary behaviors, active travel, muscle strengthening activity, and sport at baseline. Within each typology, linear mixed growth models explored longitudinal changes in accelerometer-derived moderate-to-vigorous physical activity and sedentary time, as well as time by class interactions.ResultsThree typologies were identified among children (“social screenies”, 12.8%; “exercisers”, 61.5%; and “non-sporty active commuters”, 25.7%) and among adolescents (“active screenies”, 43.5%; “active academics”, 35.0%; and “non-sporty active commuters”, 21.5%) at baseline. Sedentary time increased within each typology among children and adolescents, with no significant differences between typologies. No changes in physical activity were found in any typology among children. In adolescents, physical activity declined within all typologies, with “non-sporty active commuters” declining significantly more than “active screenies” over 3 years.ConclusionThese results support the need for intervention to promote physical activity and prevent increases in sedentary time during childhood and adolescence. Adolescents characterized as “non-sporty active commuters” may require specific interventions to maintain their physical activity over time.     

‘She’ll be right’. Or will she? Practitioner perspectives on risk assessment for led outdoor activities in Australia

Inadequate risk assessment has been implicated as a contributory factor in the deaths and injuries of participants on led outdoor activity (LOA) programmes in both Australia and overseas. The identification and assessment of risks is a required component of LOA programmes, and multiple risk assessment methods and techniques are available to the practitioner. Little, however, is known about the risk assessment approaches currently applied in practice. This study surveyed Australian LOA practitioners to: (1) determine which risk assessment methods and policy guidance are currently used in practice (if any); (2) understand practitioner perspectives around the utility of risk assessments; and (3) identify perceived challenges and barriers in applying these methods to the LOA context. The results paint a concerning picture of confusion and uncertainty in relation to conducting risk assessments, as well as a lack of policy guidance and formal training. The results imply that new and more suitable methods of risk assessment should be developed, focussing on the development, planning and delivery of led outdoor activities.     

What they know and who they are telling: Concussion knowledge and disclosure behaviour in New Zealand adolescent rugby union players

ABSTRACT

The purpose of this study was to survey high school rugby players from a range of ethnic, geographic and socioeconomic backgrounds in New Zealand (NZ) to gain an understanding of concussion knowledge, awareness of NZ Rugby’s (NZR) guidelines and attitudes towards reporting behaviours. Male and female high school rugby players (n= 416) from across NZ were surveyed. The findings indicated that 69% of players had sustained a suspected concussion, and 31% had received a medical diagnosis of concussion. 63% of players indicated they were aware of NZR’s guidelines. Māori and Pasifika players were less likely to be aware of the guidelines compared to NZ European, Adjusted OR 0.5, p = 0.03. Guideline awareness was significantly higher for those from high decile schools when compared to low (Unadjusted OR 1.63, p = 0.04); however, when ethnicity and school locations were controlled for this became non-significant (Adjusted OR= 1.3, p=0.37). The coach was the key individual for the provision of concussion information and disclosure of symptoms for players. The findings of this study will inform the development and delivery of NZR’s community concussion initiative and how these examined factors influence a high school player’s concussion knowledge and reporting behaviour.     

Potential moderators of day-to-day variability in children’s physical activity patterns

Little is known about whether physical activity compensation occurs and, if so, what are potential moderators of such responses. This study examined whether children’s physical activity, sedentary time and energy expenditure on one day was associated with these behaviours the following day, and what factors may moderate observed associations. One hundred and twenty-seven children (8–11 years) wore an ActiGraph accelerometer for eight days. Time spent in sedentary time and physical activity was obtained. Daily energy expenditure was also assessed using a SenseWear Armband (n=98). Moderators examined were sex, age, BMI, fitness, and fundamental movement skills (FMS). Multilevel analyses were conducted using generalized mixed models. On any given day, every additional 10 minutes spent in moderate-to-vigorous physical activity (MVPA) was associated with 9.3 minutes less MVPA the following day. Every additional 10kcal expended on one day was associated with 2.9 fewer kcal expended the following day. Additional time spent sedentary on any given day was associated with less light physical activity the following day in children with lower FMS. The results are largely consistent with the compensation hypothesis, with children appearing to compensate their activity between days. Strategies to minimise potential compensatory changes may be needed for children overall rather than for specific population sub-groups.     

Defining the attributes for specific playing positions in football match-play: A complex systems approach

ABSTRACT

Introduction

Talent identification and development programmes that retain and develop athletes are integral to the sporting success of National Governing Bodies in football. Currently, player attributes are studied in isolation without considering the complexity of interacting components of football performance. The current study applied a systems analysis framework to describe, in a structured and systematic way, the attributes for specific playing positions in football match-play. Methods: Eight high-level football coaches were interviewed. Models of the interacting attributes were developed for each position using Work Domain Analysis (WDA). Results: Six WDA models detail the attributes associated with each playing position. The models identified purposes of playing positions (restrict opposition actions, organise and coordinate, building up of offence, goal scoring and stretch opposition), performance-related measures and the functions required to achieve the playing position purposes (game play, psychological functions, time and space and player actions). Critically, the relationships between the purposes, measures, functions, processes, and objects are described in the models.     

Collaborating for public access to scholarly publications: A case study of the partnership between the US Department of Energy and CHORUS

• The success of the CHORUS and DOE relationship is the result of nearly two decades of interactions between the DOE and a group of scientific publishers.
• The relationship between CHORUS and the US federal agencies required understanding of different motivations, operations, and philosophies.
• Although achieving public access was simple in principle, it required considerable effort to develop systems that satisfied all parties.
• Publishers had been working with federal agencies to achieve open access before the 2013 White House Office of Science and Technology Policy, but this helped to create a path for a more fruitful relationship.

     

Las Relaciones maestro-alumno y la adaptación del niño en el medio escolar

RESUMEN

El artículo plantea la importancia de las relaciones maestro-alumno en el proceso educativo. Toda transformación esencial de la relación enseñante-educando pasa necesariamente por un cambio del proceso educativo y, más ampliamente, por un cambio de orden institucional. Se muestra la influencia determinante de los factores institucionales sobre el sistema de categorización a partir del cual el adulto-enseñante construye su representación del alumno, y la importancia de las representación que del maestro tienen los alumnos en su eficacia educativa. Puede existir también un desequilibrio entre la representación que el maestro tiene de sí mismo, la que de él tienen sus alumnos y la que le gustaría que tuviesen de él. Este desequilibrio genera malestar y el enseñante debería en este caso modificar sus conductas pedagógicas.     

Factors that Affect Emergent Literacy Development When Engaging with Electronic Books

This article reviews extant literature with the purpose of identifying factors that affect the potential efficacy of electronic books to support literacy development during early childhood. Selection criteria include experimental, quasi-experimental, and observational studies from peer-reviewed journals from 2000 to 2013 with a target population of 3–7 year olds. Results established the following factors as relevant to potential literacy outcomes: interactive features, quality assessment, repetition, and adult interaction. Each factor is discussed in its relationship to literacy skills in order to identify optimal conditions for literacy growth. Findings in this review are pertinent to parents, educators, legislators, and software developers who are making software decisions that will impact early childhood students at home or in school. Future research and implications are considered.     

Directive versus facilitative peer tutoring? A view on students’ appraisal,reported learning gains and experiences within two differently-tutored learning environments

The present study aimed to shed light on students’ appraisal and reported learning gains in two differently-tutored learning environments (i.e. directively and facilitatively tutored). In order to investigate this, a quasi-experimental study was set up in the context of a clinical skills learning environment. Not only were participating students asked to rate their appraisal of the tutored learning environment, but they were also interviewed in-depth about their learning gains and experiences within both tutored learning environments. Results showed that directively-tutored students were more positive about the tutored learning environment. With regard to experienced learning gains, it was found that, although both groups of students experienced practical learning gains, only facilitatively-tutored students acknowledged gains in their clinical understanding. Also, in terms of deep-level learning and self-efficacy beliefs, different trends between both groups emerged. Finally, diverse approach-specific strengths and drawbacks were experienced by students. While directively-tutored students were generally more positive about their learning environment, facilitatively-tutored students were more critical about their peer tutors’ approach to tutoring because this led to a lack of clarity and overview. Nevertheless, these latter students reported more deep-level learning and thinking. The current results urge educators to take into account several practical implications, both with respect to peer tutors and to students.