Mediators of the relationship between maternal education and children's TV viewing

Background: Maternal education is consistently found to be inversely related to children’s television viewing and is associated with aspects of the family television environment. This study investigates whether family television environment mediates the relationship between maternal education and children’s television viewing.

Methods: Parents of 1484 children reported maternal education, time their child spends watching television, and 21 aspects of the family television environment (potential mediators) during 2002 and 2003. Separate regression analyses were conducted in 2006 for each potential mediator that met two initial conditions for mediation (associated with both maternal education and children’s television viewing (p<0.10)), to assess whether inclusion reduced the association between maternal education and children’s television viewing. Multivariable regression assessed the combined impact of all mediators.

Results: Twelve of 21 potential mediators met the initial conditions for mediation. Inclusion of each resulted in decreased β values (3.2% to 15.2%) for the association between maternal education and television viewing. Number and placement of televisions in the home appeared to have the greatest mediating effect, followed by frequency of eating dinner in front of the television with the child and rules about television viewing during mealtimes. Together, the 12 mediators accounted for more than one-third of the association between maternal education and children’s television viewing time.

Conclusions: This study suggests the strong inverse relationship between maternal education and children’s television viewing is partly mediated by aspects of the family television environment.

Critical incident analyses : a practice learning tool for students and practitioners

The development of critical skills in social work students and practitioners has been a major focus of social work education and training in recent years. Critical incident analysis has developed as a tool to aid critical reflection in practice, in health and social work. This paper provides an overview of the use of the tool in these fields. It then reports on a demonstration project which sought to examine how critical incident analysis might be used as a form of assessment and as a supervisory tool by social work students and practice teachers. An evaluation of the project is provided. Completion of critical incident analyses using the framework was found to provide a structured approach to critical reflection. It assisted the integration of theory and practice and the examination of value issues. Students and practice teachers identify its use in supervision and its potential as an assessment tool. The paper concludes with a discussion on the potential uses of critical incident analyses, with particular attention given to its use to develop anti-oppressive practice.

Interaction of contractile activity and training history on mRNA abundance in skeletal muscle from trained athletes

Skeletal muscle displays enormous plasticity to respond to contractile activity with muscle from strength- (ST) and endurance-trained (ET) athletes representing diverse states of the adaptation continuum. Training adaptation can be viewed as the accumulation of specific proteins. Hence, the altered gene expression that allows for changes in protein concentration is of major importance for any training adaptation. Accordingly, the aim of the present study was to quantify acute subcellular responses in muscle to habitual and unfamiliar exercise. After 24-h diet/exercise control, 13 male subjects (7 ST and 6 ET) performed a random order of either resistance (8 x 5 maximal leg extensions) or endurance exercise (1 h of cycling at 70% peak O2 uptake). Muscle biopsies were taken from vastus lateralis at rest and 3 h after exercise. Gene expression was analyzed using real-time PCR with changes normalized relative to preexercise values. After cycling exercise, peroxisome proliferator-activated receptor- coactivator-1 (ET 8.5-fold, ST 10-fold, P < 0.001), pyruvate dehydrogenase kinase-4 (PDK-4; ET 26-fold, ST 39-fold), vascular endothelial growth factor (VEGF; ET 4.5-fold, ST 4-fold), and muscle atrophy F-box protein (MAFbx) (ET 2-fold, ST 0.4-fold) mRNA increased in both groups, whereas MyoD (3-fold), myogenin (0.9-fold), and myostatin (2-fold) mRNA increased in ET but not in ST (P < 0.05). After resistance exercise PDK-4 (7-fold, P < 0.01) and MyoD (0.7-fold) increased, whereas MAFbx (0.7-fold) and myostatin (0.6-fold) decreased in ET but not in ST. We conclude that prior training history can modify the acute gene responses in skeletal muscle to subsequent exercise.

Lack of integration of medical education in Australia: the need for change

The lack of cohesion across health and education sections and national and state jurisdictions is counterproductive to effective national policies in medical education and training. Existing systems in Australia for medical education and training lack coordination, and are under resourced and under pressure. There is a need for a coordinated national approach to assessment of international medical graduates, and for meeting their education and training needs. The links between prevocational and vocational training must be improved. Tensions between workforce planning, education and training can only be resolved if workforce and training agencies work collaboratively. All prevocational positions should be designed and structured to ensure that service, training, teaching and research are appropriately balanced. There is a need for more health education research in Australia.

The effect of exercise and training status on platelet activation: do cocoa polyphenols play a role?

Sedentary and trained men respond differently to the same intensity of exercise, this is probably related to their platelet reactivity and antioxidant capacity. There is growing interest in the utilization of antioxidant-rich plant extracts as dietary food supplements. The aim of this study was to investigate the effect of an acute bout of sub maximal exercise on platelet count and differential response of platelet activation in trained and sedentary subjects and to observe if cocoa polyphenols reverse the effect of exercise on platelet function. The practical significance of this study was that many sedentary people engage in occasional strenuous exercise that may predispose them to risk of heart disease. Fasting blood samples were collected from 16 male subjects, pre and post 1-h cycling exercise at 70% of maximal aerobic power (VO2max) before and after consumption of cocoa or placebo. Agonist stimulated citrated whole blood was utilized for measuring platelet aggregation, adenosine triphosphate (ATP) release and platelet activation. Baseline platelet count (221 ± 33 times 109/L) and ATP release (1.4 ± 0.6 nmol) increased significantly (P < 0.05) after exercise in all subjects. Baseline platelet numbers in the trained were higher (P < 0.05) than in the sedentary (235 ± 37 vs. 208 ± 34 times 109/L), where as platelet activation in trained was lower (P < 0.05) than sedentary (51 ± 6 vs. 59 ± 5%). Seven days of cocoa polyphenol supplementation had little effect on any of the parameters measured. We conclude that trained subjects show decreased activation of stimulated platelets when compared to the sedentary subjects and short-term cocoa polyphenol supplementation did not decrease platelet activity in response to exercise independent of prior training status.

Evidence of high-skilled VET practitioners and high-performing VET organisations : findings from an evaluation of the long-term impacts of Framing the Future projects conducted in 1999-2000

Framing the Future is a major staff development initiative of the Australian National Training Authority (ANTA), designed to support the implementation of the National Training Framework (NTF). Since 1997 over 20,000 vocational education and training (VET) practitioners have participated in the program. The program was renamed Reframing the Future in 2001.

This study reports on research conducted on the long-term impacts of projects funded by Framing the Future in 1999 and 2000. John Mitchell and Sarah Wood from John Mitchell & Associates conducted the research from May 2000–May 2001.

Using twenty four case studies and the results of interviews and an extensive survey, the report provides evidence of high-skilled VET practitioners and high-performing VET organisations who ensure that their involvement in Framing the Future projects leads to long-term gains, particularly in support of the implementation of the NTF.

The never-ending quest : effective strategy-making and change management for high-performing VET organisations

This report summarises the evaluation of projects undertaken in 2001-02 as part of Reframing the Future's sub-program on Strategic Management and Change Management. It argues every Registered Training Organisation (RTO) in the vocational education and training (VET) sector in Australia needs managers who can design effective strategies.

The potential for communities of practice to underpin the National Training Framework

This report is an evaluation of the sixteen pilot projects that were funded to form Communities of Practice in the VET sector in 2001, as part of the Reframing the Future program. The major theme emerging from this evaluation study is that Communities of Practice in the vocational education and training (VET) sector in Australia have the potential to accelerate, intensify, enrich and enhance the implementation of the national training system.

Emerging futures : innovation in teaching and learning in VET

This report on Innovation in Teaching and Learning in the vocational education and training (VET) sector demonstrates that pressures for change are flowing with increasing force into teaching and learning practice within VET. As a consequence of this ongoing change, wider, deeper and more frequent innovation is now needed in VET teaching and learning practices. However, this report shows that there are good grounds for optimism about the quality and scope of current innovation in teaching and learning practices in VET. The particular and local instances of practitioner innovation found in the research for this project serve as a reminder of the many different ways in which VET practitioners are knowledgeable and innovative. Positive futures for VET are emerging, as a result of this practitioner innovation. A literature review, interviews, focus groups and case study research inform the key findings.

Nursing education and graduates in Victoria : profiles for 2000, 2001, and 2002 with projections for 2003

This project is the second of two projects commissioned by the Nurse Policy Branch, Victorian Department of Human Services (VDHS). The project investigated nursing education at the undergraduate and postgraduate levels in the university sector and in the VET sector. The data gathered from the project provided VDHS with a better understanding of nurse labour force issues.

Traffic safety education and health promoting school : a metropolitan and rural pilot study

Traffic Safety Education (TSE) is an important part of a school's program; however, it competes with many other components of schooling such as literacy, numeracy and a number of health areas. Hence TSE provision in Victorian schools has been somewhat fragmented and haphazard in its delivery. This small pilot study involved two metropolitan and two rural schools which attempted to link TSE into mainstream school activities through the new Victorian Essential Learning Standards (VELS) utilising the internationally accepted Health Promoting Schools (HPS) framework.
The findings of the pilot study showed that though schools face many demands, understanding and ownership of TSE is possible when administrative support, professional development and adequate planning time are made available. The report outlines several key recommendations to improve the delivery of Traffic Safety Education in Victorian schools.