Validation of accelerometer data for measuring impacts during jumping and landing tasks

The purpose of this study was to examine the validity of a commercially-available accelerometer, as used in the field team sports context. Ten adult participants completed two movement tasks: 1) a drop landing task from 30-cm, 40-cm and 50-cm heights [DLAND], and 2) a countermovement jumping task [CMJ]. Peak acceleration values, both smoothed and unsmoothed, occurring in the longitudinal axis [Y] and calculated to produce vector magnitude values [VM], were compared to peak vertical ground reaction force values [VGRF]. All acceleration measures were moderately correlated (r = 0.45 – 0.70), but also significantly higher than weight-adjusted VGRF, for both tasks. Though the raw acceleration measures were mostly above the acceptable limit for error (> 20%), the smoothed data had reduced error margins by comparison, most of which were well below 20%. These results provide some support for the continued use of accelerometer data, particularly when smoothed, to accurately quantify impacts in the field.

Student outcomes from engaging in open science investigations

This is the first of two papers that draw on a study of the national BHP Billiton Science Awards, a peak competition funded by BHP Billiton and administered by CSIRO. BHP Billiton, CSIRO and ASTA together oversee the strategic direction of the Awards. This paper reports an analysis focussed on the outcomes for students of participation in open scientific investigations. The second paper deals with school and teacher strategies supporting the conduct of such student open science investigations and the implications that can be drawn from the data.

Ownership and strategic choice of HRM methods by Chinese SMEs

Using a sample of seventy-four Chinese small and medium-size enterprises (SMEs), this paper explores the influence of ownership on human resource management (HRM) practices by SMEs. It concludes that enterprise ownership determines both strategic choice and the level of complexity in the application of HRM practices, which are more likely to be adopted by foreign-related and domestic, private-owned companies than by collective and state-owned enterprises.

The transnational corporation, corporate social responsibility and the 'outsourcing' debate

Current popular debates in the United States and Australia on the topics of 'jobless recoveries' and the 'outsourcing' of skilled IT jobs to India (most conspicuously) evidence a confusion as to the institutional role of the business firm and its obligations to the broader stakeholder community, as well as to the more specific differences between outsourcing and the spatial restructuring of corporate value-chains. This paper will take up several issues in the hope of clarifying this confusion, including the essential nature of the business firm as an economic, political and social institution; the possibilities for social responsibility and stakeholder management in large internationalised firms; and the critical distinctions between domestic and international outsourcing and spatial restructuring. Data from the 'outsourcing' debate will be referenced to illustrate the differing logics/rationalities of relevant stakeholder groups.

The drivers of corporate social responsibility : a critical review

The paper criticises the dominant discourse of corporate social responsibility (CSR) by examining six sets of factors conventionally considered as promoting outcomes consistent with core principles of social responsibility: intra-organizational factors, competitive dynamics, institutional investors, end-consumers, government regulators and non-governmental organizations. Each factor is addressed conceptually, empirically, and with respect to its likely future significance in promoting outcomes consistent with CSR. Our overall conclusions are not promising on any of these dimensions.

Paracetamol use in early life and asthma : prospective birth cohort study

Objective To determine if use of paracetamol in early life is an independent risk factor for childhood asthma.
Design Prospective birth cohort study.
Setting Melbourne Atopy Cohort Study.
Participants 620 children with a family history of allergic disease, with paracetamol use prospectively documented
on 18 occasions from birth to 2 years of age, followed until age 7 years.
Main outcome measures The primary outcome was childhood asthma, ascertained by questionnaire at 6 and 7 years. Secondary outcomes were infantile wheeze, allergic rhinitis, eczema, and skin prick test positivity.
Results Paracetamol had been used in 51% (295/575) of children by 12 weeks of age and in 97% (556/575) by 2 years. Between 6 and 7 years, 80% (495/620) were followed up; 30% (148) had current asthma. Increasing frequency of paracetamol use was weakly associated with increased risk of childhood asthma (crude odds ratio 1.18, 95% confidence interval 1.00 to 1.39, per doubling of days of use). However, after adjustment for frequency of respiratory infections, this association essentially disappeared (odds ratio 1.08, 0.91 to 1.29). Paracetamol use for non-respiratory causes was not associated with asthma (crude odds ratio 0.95, 0.81 to 1.12).
Conclusions In children with a family history of allergic diseases, no association was found between early paracetamol use and risk of subsequent allergic disease after adjustment for respiratory infections or when paracetamol use was restricted to non-respiratory tract infections. These findings suggest that early paracetamol use does not increase the risk of asthma.

Monitoring the safe use of Clozapine : a consensus view from Victoria, Australia

Clozapine is an important antipsychotic agent that has a unique profile of clinical benefits, but that has also been associated with several serious and potentially life-threatening safety concerns. In order to minimise the impact of haematological adverse events, health professionals treating patients with clozapine are currently required to register their patients on a centrally administered data network and to conform to strict protocols. The consensus statement documented in this article extends existing protocols by recommending monitoring of patients treated with clozapine for additional adverse effects during treatment. This consensus statement reflects the current practice at five major public psychiatric hospitals in Victoria, Australia, for the monitoring and management of clozapine-related adverse events, and has been implemented at these sites because of emerging safety concerns associating clozapine with cardiovascular and metabolic adverse effects.