Longitudinal relations of perceived availability of neighborhood sport facilities with physical activity in adolescents: an analysis of potential moderators

Background
Little is known about the longitudinal relations of environment attributes and leisure-time physical activity (PA) in adolescents, and the moderating effects of individual characteristics. This study examined the longitudinal association of the perceived availability of neighborhood sport facilities with leisure-time PA, and the potential moderating effects of age, past PA behavior, and weight status in adolescents.

Methods
Among 20,933 follow-up subjects (60.9% of 34,369 baseline subjects), 9993 from 32 Hong Kong secondary schools were successfully matched with baseline (mean duration 16 months; SD 1.7) and had complete information. At baseline and follow-up, respondents reported their leisure-time PA, weight, height, and the presence of sport facilities in the neighborhood.

Results
Increased perceived availability of sport facilities from baseline to follow-up predicted more leisure-time PA at follow-up (β = 1.029; 95% CI: 1.011–1.047) overall. This effect was modified by baseline PA, with a significant effect observed only among those who had engaged in leisure-time PA more than 3 times a week.

Conclusions
Increasing awareness of neighborhood sport facilities or building more such facilities may help active adolescents maintain or increase their leisure-time PA. However, more comprehensive multilevel interventions that aim at enhancing potential social, personal, and environmental PA-related factors may be needed to motivate inactive adolescents.

How do perceptions of local neighborhood relate to adolescents` walking and cycling?

Purpose. To examine how perceptions of the local neighborhood relate to adolescents' walking and cycling. Design. Exploratory cross-sectional study. Setting. Birth cohort from the Nepean Hospital, Sydney, Australia. Subjects. Three hundred forty-seven adolescents (79.1 % response rate; 49.6% boys; mean age - 13.0 ± 0.2 years) and their parents. Measures. Self-report and parental-report questionnaires. Results. Multiple linear regressions, adjusted for level of maternal education, revealed that boys who reported having many peers to hang out with locally, cycled for recreation (β = 0.242, p = .006) or for transport (β = 0.141, p = . 046) more often, and walked for transport for longer (β = 0.129, p = .024) on weekdays. For girls this variable was related to cycling for recreation on weekends (β = 0.164, p = .006) and walking to school (β = 0.118, p = .002). Adolescents who waved/talked to neighbors walked for transport more often (boys, β = 0.149, p = .037; girls, β = 0.119, p = .012). Girls who perceived local roads to be safe spent more time walking for transport on weekdays (β = 0.183, p = .007) and for exercise on weekends (β = 0.184, p = . 034). Parents' perception of heavy traffic was negatively associated with boys' walking for transport (β = -0.138, p = .037) and many aspects of girls' walking and cycling. Conclusion. Social interaction and road safety may be important predictors of adolescents' walking and cycling in their neighborhood. Limitations are the use of self-report and cross-sectional data. Longitudinal studies may clarify these relations.

Influences of spatial practices on pressure ulcer management in the context of spinal cord injury

Nursing practice is significantly influenced by the type and use of space in which nursing is practised. While investigating current patterns of service delivery for the management of pressure ulcers from the perspective of people with spinal cord injuries and their families, the space in which care was delivered was identified as a central determinant of care. Qualitative methods were used to investigate consumer perspectives among patients residing in both metropolitan and rural communities who had been hospitalized for the management of pressure ulcers. Issues related to the spatial practices of the hospital are discussed, demonstrating a link between well-being and the creation of an appropriate caring milieu. It is concluded that service could be improved markedly if health-care professionals placed more consideration on the impact of space on their service delivery.

The impact of management style on the employment relations of different sized organisations

Purpose of the research/paper: The views and values of managers are typically noted as being wedded to unitarist or pluralist ideals. This paper disaggregates these views and values by looking at the impact of various managerial styles on employment relations in different sized organisations.
Methodology: Conceptual with applied support from the secondary literature.
Findings: The paper concludes that large organisations confront conditions and contingencies which allow them to make certain choices about employment relations in ways that are not always available to small to medium sized organisations.

'Research as dialogue' and cross-cultural consultations : confronting relations of power

ln this paper, we discuss methodological issues that emerged as we worked through a small empirical research project, 'Engaging Aboriginal students in education through community empowerment'. Recent national policy statements (see, for example, MCEETYA 2000,. NBEET 1995) argue the importance of education/research that keeps the locus of control within the Aboriginal community as a means to further the goal of self-determination and improve educational outcomes. In keeping with these recommendations, our project aimed to challenge assimilationist frameworks and sought to 'empower' members of the local Aboriginal community through participation in the project. 'Research as dialogue' was a guiding principal and a primary aim was to listen actively to all key stakeholders in the remote community setting, particularly to lndigenous parents, students and teachers, in order to identify current strengths and concerns regarding the provision of culturally inclusive schooling. A proposed second stage of the project is to develop, on the basis of these consultations and in collaboration, community-based education projects that engage non-attending Aboriginal students. Here we discuss the consultative processes undertaken in stage one of the project, and critically analyse the difficulties as well as potential strengths of trying to form collaborative partnerships as researchers across cultural differences and with diverse community groups.

'Research as dialogue' and cross cultural consultations : confronting relations of power

The 'rescuing' of Indigenous children (from their communities) through education, and the notions of assimilation associated with that, is an aspect of colonialism that has persisted into the so-called 'post-colonial' era. Recent national policy statements (eg. MCEETYA, 2000; NBEET, 1995) argue the importance of education/research that keeps the locus of control within the Aboriginal community as a means to further the goal of self determination and improve educational outcomes. In this paper, we report on the initial stage of a small empirical research project, Engaging Aboriginal Students In Education Through Community Empowerment.

'Research as dialogue' was a guiding principal and a primary aim was to listen actively to all key stake holders in the remote community setting, particularly to Indigenous parents, teachers and service providers, in order to identify current

strengths and concerns regarding the provision of culturally inclusive schooling; and then, to develop, on the basis of these consultations and in collaboration, community-based education projects that engage non-attending Aboriginal students.

In this paper, we critically analyse the difficulties as well as potential strengths of trying to form collaborative partnerships as researchers, across cultural differences and with diverse community groups. For example, what does 'acknowledging' very different cultural perspectives actually mean to/in this kind of research process? The ways in which relations of power amongst all parties are played out in/through such an approach is also opened up for scrutiny and further discussion.

Legal relations of collectives : belated insights from Hohfeld

Collectives and their interrelations are central to international law. Legal relations between collectives can be analysed with reference to the classic account of Hohfeld without reducing those collectives to mere aggregates of individuals and without recourse to the legal fiction of treating the collective, for example the state, as a quasi-individual. The rights of collectives have been widely if not conclusively explored within international law, but Hohfeld’s ‘field’ approach to legal relations enables the scrutiny of the range of relations, including immunities, liberties, powers, and disabilities, as well as claim-rights and the corresponding obligations in others. The main substantive topics for discussion are the legal relations of collective entities such as peoples and minorities, and closely related matters such as self-determination. Applying Hohfeldian analysis to international law highlights the centrality of international collective entities of which the state represents only one variety. The approach described here therefore takes account of the dethroning of the state within contemporary international law and contributes to the theorization of that development. Nearly one hundred years after its
first appearance, Hohfeld’s analytic scheme continues to generate insights for international law.

An Australian version of the neighborhood environment walkability scale : validity evidence

This study examined validity evidence for the Australian version of the Neighborhood Environment Walkability Scale (NEWS-AU). A stratified two-stage cluster sampling design was used to recruit 2,650 adults from Adelaide (Australia). The sample was drawn from residential addresses within eight high-walkable and eight low-walkable suburbs matched for socio-economic status (SES). Neighborhood walkability was measured using Geographic Information Systems data on dwelling density, intersection density, net retail area, and land-use mix. Participants completed the NEWS-AU and reported weekly minutes of walking for transport and recreation (International Physical Activity Questionnaire [IPAQ]). Multilevel confirmatory factor analysis (MCFA) was used to define the individual- and Census Collection District (CCD)-level measurement model of the NEWS-AU. Seven individual-level and five CCD-level factors were identified. These measurement models were somewhat similar to those of the original Neighborhood Environment Walkability Scale (NEWS). Patterns of associations between the NEWS-AU factors/scales and the walking measures provided some validity evidence for the instrument.

Analytic prediction of structural stress-strain relations of microstructured metal

Nanostructured and ultra-fine grained metals have higher strength but extremely limited ductility compared to coarse grained metals. However, their ductility can be greatly improved by introducing a specific range of grain sizes in the microstructures. In the paper, multiscale unit cell approach (UCA) is developed and applied to predict the averaged stress-strain relations of the multiscale microstructure metals. The unit cell models are three-phase structured at different scale lengths of 100 nm, 1 μm and 10 μm with different volume fractions and periodic boundary conditions. The contributions of multi-scale microstructures to the macroscopic structural properties of metals are also studied using a analytic approach—two-step mean-field method (TSMF), where three microstructural parameters are introduced and thus mechanical properties such as strength and ductility are presented as a function of these parameters. For verification of these proposed numerical and theoretical algorithms, the structural properties of the pure nickel with three-grain microstructures are studied and the results from FEA and the proposed theory have good agreement.