Lifetime sport and leisure activity participation is associated with greater bone size, quality and strength in older men

Introduction: It remains uncertain whether long-term participation in regular weight-bearing exercise confers an advantage to bone structure and strength in old age. The aim of this study was to investigate the relationship between lifetime sport and leisure activity participation on bone material and structural properties at the axial and appendicular skeleton in older men (>50 years).

Methods: We used dual-energy X-ray absorptiometry (DXA) to assess hip, spine and ultradistal (UD) radius areal bone mineral density (aBMD) (n=161), quantitative ultrasound (QUS) to measure heel bone quality (n=161), and quantitative computed tomography (QCT) to assess volumetric BMD, bone geometry and strength at the spine (L₁–L₃) and mid-femur (n=111). Current (>50+ years) and past hours of sport and leisure activity participation during adolescence (13–18 years) and adulthood (19–50 years) were assessed by questionnaire. This information was used to calculate the total time (min) spent participating in sport and leisure activities and an osteogenic index (OI) score for each participant, which provides a measure of participation in weight-bearing activities.

Results: Regression analysis revealed that a greater lifetime (13–50+ years) and mid-adulthood (19–50 years) OI, but not total time (min), was associated with a greater mid-femur total and cortical area, cortical bone mineral content (BMC), and the polar moment of inertia (I _p) and heel VOS (p ranging from <0.05 to <0.01). These results were independent of age, height (or femoral length) and weight (or muscle cross-sectional area). Adolescent OI scores were not found to be significant predictors of bone structure or strength. Furthermore, no significant relationships were detected with areal or volumetric BMD at any site. Subjects were then categorized into either a high (H) or low/non-impact (L) group during adolescence (13–18 years) and adulthood (19–50+ years) according to their OI scores during each of these periods. Three groups were subsequently formed to reflect weight-bearing impact categories during adolescence and then adulthood: LL, HL and HH. Compared to the LL group, mid-femur total and cortical area, cortical BMC and I _p were 6.5–14.2% higher in the HH group. No differences were detected between the LL and HL groups.

Conclusions: In conclusion, these findings indicate that long-term regular participation in sport and leisure activities categorized according to an osteogenic index [but not the total time (min) spent participating in all sport and leisure activities] was an important determinant of bone size, quality and strength, but not BMD, at loaded sites in older men. Furthermore, continued participation in weight-bearing exercise in early to mid-adulthood appears to be important for reducing the risk of low bone strength in old age.

The construction of the adolescent male body through sport

The present study examined the role played by sport in understanding adolescent males' views about their body. Semi-structured interviews were conducted with 40 adolescent boys aged between 15 and 17 years. An inductive thematic analysis of boys' narratives showed that sport provided adolescent males with a context for discussing their body image. Attributes which males liked about their body were synonymous with those associated with being successful at sport. In addition, sport was used as a forum for competing with other males both through playing sport and by using sport performance to make favourable social comparisons about their body size.

The position of Australian community sporting organisations in the third sector: membership profiles, characteristics and attitudes

Australian community sporting organisations have been relatively underresearched within the wider study of voluntary associations, yet their membership base is large and constitutes a sizable proportion of the population. This paper analyses data from the Australian Survey of Social Attitudes (AuSSA) 2003 (Gibson et al. 2004), initially to describe characteristics ofmembers ofcommunity sporting organisations in Australia (n=948). It goes on to compare attitudinal dimensions between members of sporting and other major third-sector organisations. On the basis of these comparisons three groupings of associations are suggested: social change, individual/social progress and individual/social maintenance. Sporting organisations form part of the latter category, and the paper briefly discusses the likely nature of social capital production associated with each.

Doping in sport: an economic analysis

This paper examines the impact of various regulatory policies on the decision to dope by athletes. The analysis suggests that punishment schemes involving lump-sum fines and bans, which are commonly used to control doping, create biases, and do not achieve their goal of levelling the playing field. Under plausible assumptions, these schemes are more likely to control doping for risk averse athletes compared to risk neutral ones, poorer athletes compared to their wealthier counterparts, and athletes with high earning potentials relative to those with lower potential. A marginal penalty scheme where athletes are fined based on the quantity of dope detected eliminates these biases, and emerges as a superior policy for levelling the playing field.

Non-government organisations and the dialectics of state and civil society

This paper is concerned with envisioning the development of non-government organisations (NGOs) in Australia over the next 200 years. It begins with a discussion of a hypothetical NGO, providing vignettes of its activities in 2104 and 2204, and sketching out contextual factors that might influence NGO development. This discussion is followed by an outline of the methodology upon which the projections indicated in the hypothetical case-study are based. Three methodological approaches are used. The first approach begins from an analysis of current contextual trajectories, and projects the role of NGOs within these trajectories. The second approach postulates that the changes that will occur will be affected by the reflexive nature of social change, involving continual reflection and action. The third methodological approach draws on this notion of reflexivity, but emphasises that social change is not only a reflexive process, it is also a dialectical one. The dialectical approach rests on the premise that change occurs through a process of the accumulation of contradictions, challenge and resolution. Using these methodological approaches the paper proceeds to identify three factors which will influence the Australian NGO sector in the next 200 years. These factors are the shifting relations between the state and civil society, including the rise of the neo-authoritarian state in the 21st century; the ways in which least advantaged people are dealt with and, finally, the idea of risk society. While it is more difficult to identify the contextual and NGO trajectories into the 22nd and 23rd centuries, the paper postulates a more utopian vision for NGOs in Australia in 200 years time, where the category of people who had been previously marginalised disappears, and the major roles of NGOs are to ensure cultural diversity and develop civil labour.

Adoption of the world wide web by traditional Australian media organisations

The aim of this paper is it to identify whether Australian media companies moved online with a clear business model in mind or in an ad-hoc manner. In-depth interviews were conducted with four Internet media managers from two large Australian media organisations. All four had been involved in Web publishing from its early stages and had extensive knowledge of the development of Web publishing in the industry. The interviews focused on the period around the mid 1990’s when the early development of the organisations’ websites took place. We also review an analytical approach of examining narratives from research interviews developed by Davidson (Davidson 1997) and Mishler (Mishler1986a, 1986b).

Extending social marketing to emergency services organisations

Social marketing theory is examined in relation to an organisational context which has received little attention. This paper examines the development of an integrated social marketing campaign for a State Emergency Service, and focusses on a particularly serious scenario where the penalty for miscommunication may be death, widespead injury or substantial property damage. The researchers take an action research approach, identifying community perceptions of risk to determine appropriate communication message development. The study identifies the factors contributing to risk perception beyond traditional concepts of involvement which are common in studies of consumer behaviour. Additionally, this paper provides an investigation of some of the issues that affect communication effectiveness, such as the influence of stakeholders, the poor performance of traditional communications methods, the utility of social marketing principles, and segmentation requirements, as well as influential ideas from the general risk communication literature.

A security method for healthcare organisations

The use of participational approaches to system design has been debated for a number of years. Within this paper we describe a method that was used to effectively design information systems and implement computer security countermeasures within an health care environment and shown how it was used in a number of environments.

Ethical behaviour: the foundation stone for entrepreneurial activity in arts organisations

Entrepreneurship is being touted as the way forward for arts organisations unsure of the level of continued government funding available and confronted with the need to ever improve. At a time when leadership and governance in cultural organisations have changed in line with cultural expectations, how is their ethical stance assessed? In an age of globalisation, economic restructuring and technological change, museums are sometimes seen to be something of a contradiction. Traditionally seen as temples for the muses, today's museums are being challenged to be ethical for society. As a solution, this paper proposes a Cooperative Model of Cultural Organisational Ethics that attempts to provide a framework by which arts organisations can put in place ethical artefacts that enhance organisational performance, rather than detract from it.

Intra-organisational attitudes to marketing and the Implementation of the marketing concept in nonprofit organisations

This paper explores the market orientation and marketing culture of all staff within a nonprofit organisation to ascertain the extent to which members of the organisation support or create barriers to the implementation of the marketing concept. Of particular interest in this research is the role of nonprofit organisations, which are often thought of as having a production, rather than marketing focus. Consequently, there may be cultural and behavioural conflicts between, for example, marketing personnel and production personnel. This paper provides a brief overview of the existing literature in the field of market orientation and marketing culture. After detailing the general research design, a summary of the results of 11 initial focus groups, consisting of all staff in one nonprofit organisation, is presented. The findings indicate that while all areas within this organisation are committed to marketing, there are various interpretations of marketing and how it should be implemented.

Entrepreneurship in the markets of nonprofit performing arts organisations

This paper explores how managers in nonprofit performing arts organizations balance the interests of the various funding sources and market opportunities to service their revenue requirements. It reviews a tension in nonprofit performing arts organizations: the relationship between limited funding and the subsequent need to act entrepreneurially and innovatively amongst the various funding sources. Using a longitudinal analysis of annual reports in six major nonprofit performing arts organisations in Australia since 1975, the paper uncovers some of the interplay essential to entrepreneurship. From this discussion, different strategies and tensions are highlighted that nonprofit general managers have used. Comparisons are made with nonprofit art museums which previous research has shown have the same funding tensions.

Information security, cyber crime, and infrastructure protection : information security management within Australian healthcare organisations

Information security is now recognised as critical factor within the healthcare industry. With the gradual move from paper -based to electronic information there is an even greater need for protection. However, financial and operational constraints often exist which influence the practicality of developing a secure system. A new baseline security standard, the Health Information Security Management Implementation Guide, has been drafted which applies specifically to the unique information security requirements of the healthcare industry. The aim of this paper is to look at the effectiveness of the health information security standard and the development of information security within the Australian healthcare industry.