Assuming responsibility : teachers taking charge of their professional development

The paper reports on some of the findings of an extensive study undertaken in Victoria as part of a national Science, ICT and Mathematics Education in Rural and Regional Australia (SiMERR) project. One of the significant findings of the study was the extent to which teachers in the schools where the study data were collected took responsibility for many aspects of their own professional development. This was not at the expense of, but rather was in addition to, their involvement in school- and region-based professional development activity. The study also identifies some of the challenges faced, mostly related to the location of their schools in a rural or regional setting.

Substrate utilization during exercise performed with and without glucose ingestion in female and male endurance trained athletes

Compared to males, females oxidize proportionately more fat and less carbohydrate during endurance exercise performed in the fasted state. This study was designed to test the hypothesis that there may also be gender differences in exogenous carbohydrate (CHOexo) oxidation during exercise. Healthy, young males (n = 7) and females (n = 7) each completed 2 exercise trials (90 min cycle ergometry at 60% VO[sub2peak]), 1 week apart. Females were eumenorrheic and were tested in the midfollicular phase of their menstrual cycle. Subjects drank intermittently either 8% CHOexo (1 g glucose ⋅ kg ⋅ h[sup-1]) enriched with U-13C glucose or an artificially sweetened placebo during the trial. Whole-body substrate oxidation was determined from PER, urinary urea excretion, and the ratio of 13C:12C in expired gas during the final 60 min of exercise. During the placebo trial, fat oxidation was higher in females than in males (0.42 ± 0.07 vs. 0.32 ± 0.09 g ⋅ min[sup-1] . kg LBM[sup-1] x 10[sup-2]) at 30 min of exercise (p < .05). When averaged over the final 60 min of exercise, the relative proportions of fat, total carbohydrate, and protein were similar between groups. During CHOexo ingestion, both the ratio of 13C: 12C in expired gas (p < .05) and the proportion of energy derived from CHOexo relative to LBM (p < .05) were higher in females compared to males at 75- and 90-min exercise. When averaged over the final 60 min of exercise, the percentage of CHOexo to the total energy contribution tended to be higher in females (14.3 + 1.2%) than in males (11.2 ± 1.2%; p = .09). The reduction in endogenous CHO oxidation with CHOexo intake was also greater in females (12.9 ± 3.1%) than in males (5.1 ± 2.0%; p = .05). Compared to males, females may oxidize a greater relative proportion of CHOexo during endurance exercise which, in turn, may spare more endogenous fuel. Based on these observations, ingested carbohydrate may be a particularly beneficial source of fuel during endurance exercise for females.

Evaluating sport club board performance : a customer perspective

When assessing board performance, customers are often overlooked as a stakeholder group. Yet, dissatisfied customers have successfully acted to have boards removed, and we have seen this scenario occur repeatedly among professional sport organizations governed by boards. The purpose of this research was to identify the factors affecting customer perceptions of sport club board performance, and guide organizations in the management of those perceptions. After extensive qualitative research, over 20,000 season ticket holders (STHs) from 14 different professional sport clubs were surveyed. The results suggest that a combination of overt performance measures (e.g., profits) and subjective, nonfinancial measures (e.g., feelings of inclusion) are used by customers to assess sport boards. Overall perceptions of the board directly influence customer satisfaction, and are strongly correlated with on-field performance and customer inclusion, suggesting boards are perceived to have a role to play in both areas. Perceptions of board performance are, therefore, worth managing in a holistic manner, balancing strong financial and club management with a particular emphasis on inclusive practices.

Is there global inclusion of authors in the five leading advertising journals? A regional comparison 1998-2007

A question that has been raised in academia has to do with whether there is global inclusion of authors in publishing. While this issue has been explored in some areas in business and marketing it has generally not been investigated across 30 years of advertising research activity. This paper seeks to examine the global inclusion of authors in five advertising-focused journals. We found that, while there appears to be an increase in international publishing activity in advertising compared to data extrapolated from past studies, published advertising research still reveals a North American bias/domination. A failure to be globally inclusive may lead to an under-exploration of academic issues and perspectives, as important 'non-US' issues could possibly be ignored.

Reliability of surface EMG measurements of the quadriceps during maximal isometric contractions following water immersion

Background: The influence of water immersion on neuromuscular function is of importance to a number of disciplines; however, the reliability of surface electromyography (SEMG) following water immersion is not known. This study examined the reliability of SEMG amplitude during maximal voluntary isometric contractions (MVICs) of the vastus lateralis following water immersion.

Methods: Using a Biodex isokinetic dynamometer and in a randomized order, 12 healthy male subjects performed four MVICs at 60° knee flexion on both the dominant and nondominant kicking legs, and the SEMG was recorded. Each subject's dominant and nondominant kicking leg was then randomly assigned to have SEMG electrodes removed or covered during 15 min of water immersion (20°C–25°C). Following water immersion, subjects performed a further four MVICs.

Results: Intraclass correlation coefficient (ICC) and the relative standard error of measurement (%SEM) of SEMG amplitude showed moderate to high trial-to-trial reliability when electrodes were covered (0.93% and 2.79%) and removed (0.95% and 2.10%, respectively).

Conclusions: The results of the this study indicate that SEMG amplitude of the vastus lateralis may be accurately determined during maximal voluntary contractions following water immersion if electrodes are either removed or covered with water-resistive tape during the immersion.

Effects of long-term tennis playing on the muscle-bone relationship in the dominant and non-dominant forearms

The relationship between muscle strength and bone mineral density illustrates the positive effect of mechanical loading on bone. But local and systemic factors may affect both muscle and bone tissues. This study investigated the effects of long-term tennis playing on the relationship between lean tissue mass and bone mineral content in the forearms, taking the body dimensions into account. Fifty-two tennis players (age 24.2 +/- 5.8 yrs, 16.2 +/- 6.1 yrs of practice) were recruited. Lean tissue mass (LTM), bone area, bone mineral content (BMC), and bone mineral density were measured at the forearms from a DXA whole-body scan. Grip strength was assessed with a dynamometer. A marked side-to-side difference (p < 0.0001) was found in favor of the dominant forearm in all parameters. Bone area and BMC correlated with grip strength on both sides (r = 0.81 - 0.84, p < 0.0001). The correlations were still significant after adjusting for whole-body BMC body height, or forearm length. This result reinforced the putative role of the muscles in the mechanical loading on bones. In addition, forearm BMC adjusted to LTM or grip strength was higher on the dominant side, suggesting that tennis playing exerts a direct effect on bone.

Landscapes of learning : lifelong learning in rural communities

Reviews the non-fiction book 'Landscapes of Learning: Lifelong Learning in Rural Communities,' edited by Fred Gray.

Reliability of normalisation methods for EMG analysis of neck muscles

Acceptable reliability of normalisation contractions in electromyography (EMG) is paramount for testing conducted over a number of days or if normal laboratory strength testing equipment is unavailable. This study examined the reliability of maximal voluntary isometric contractions (MVIC) and sub-maximal (60%) isometric contractions for use in neck muscle EMG studies. Surface EMG was recorded bilaterally from eight sites around the neck at C4/5 level from five healthy male subjects. Subjects performed MVIC and sub-maximal normalisation contractions using an isokinetic dynamometer (ID) and a portable cable dynamometer with attached strain gauge (PCD) in addition to a MVIC against a manual resistance (MR). Subjects were tested in flexion, extension, left and right lateral bending and were retested by the same tester within a two-week period. Intra class correlation co-efficients (ICC) were calculated for each testing method and contraction direction and a mean ICC was calculated across all contraction directions. All normalisation methods produced excellent within-day reliability (mean ICC >0.80) but only the MVICs using the ID and PCD had acceptable reliability when assessed between-days. This study confirmed the validity of using MVICs elicited using the ID and PCD as reliable reference contractions for the normalisation of neck EMG.

The application of the transtheoretical model to offender populations : some critical issues

Purpose : Over the past two decades, the transtheoretical model (TTM) of change has become perhaps the most widely used model of behaviour change in the treatment of addictive and/or problem behaviours. More recently, the stages of change component of the TTM has been adopted for use in forensic settings. This paper aims to review the application of the TTM model to offender populations.

Arguments : The application of the TTM to offenders raises a number of issues regarding the process of behaviour change for offenders attending treatment programmes. It is argued that while the TTM has been designed to account for high frequency behaviour (e.g. smoking, alcohol misuse), offending behaviour may be less frequent and the process of change less cyclical. Moreover, it is suggested that the most important issue in a treatment context is the proper integration of the TTM constructs. There have been few empirical tests of this aspect of the model.

Conclusion : While the TTM may have some value in explaining how rehabilitation programmes help offenders to change their behaviour, the stages of change construct is, by itself, unlikely to adequately explain the process by which offenders desist from offending.

Expectancy violation and perceptions of rape victim credibility

Purpose. Rape victims have been found to have a heightened risk of secondary victimization in the legal system through biased perceptions of their credibility. In this study, participants observed a video of a rape victim reporting the crime and evaluated her credibility, to establish the influence of victim emotional expressiveness on evaluations of victim credibility. Methods. The nonverbal (eye-contact, crying) and paralinguistic (tone of voice) behaviour of the rape victim was manipulated such that the emotional presentation viewed by observers was either expressive, or not expressive. One hundred and thirty seven participants were randomly allocated to observe a videotape of either an expressive or a non-expressive victim. Participants' specific expectations about the emotional expressiveness of rape victims in general were also measured. Results. Results revealed no significant main effect of emotional expressiveness on perceptions of credibility. However, among participants with a strong expectation of emotional expressiveness, a rape victim who was emotionally expressive was perceived to be significantly more credible than a victim who was not emotionally expressive. Conclusions. It appears to be expectancy violation rather than emotional expressiveness per se that biases observers' perceptions of rape victim credibility.

Initial experience in 115 patients with the retrievable Cook Celect vena cava filter

The aim of this study was to evaluate our experience with the retrievable Cook Celect inferior vena cava (IVC) filter (William Cook, Europe) with regard to insertion, efficiency, ease of retrieval, and any associated complications. A retrospective review was performed of 115 patients (41 female, 74 male, mean age 47.97 years) who underwent Cook Celect IVC filter insertion between December 2005 and October 2007. Filter insertion was successful in all patients. Of the 115 filters inserted, 57 have been successfully retrieved (49.6%) to date. The successful retrieval rate from attempted retrieval was 93.4%. The mean dwell time of successfully retrieved filters was 114.9 days (range 14–267 days). Failed retrievals were due to a thrombosed vena cava ( n = 1) and endothelialisation of the filter ( n = 3). In the failed retrieval group the mean implantation time was 142 days (range 78–211 days). While this is the first retrospective clinical study on the Cook Celect filter, results to date are promising. We demonstrated an efficacious filter with a high successful retrieval rate of 93.4% and a low complication rate. The filter was assessed with extended dwell times (range 14–267 days). Failed retrieval secondary to hook endothelialisation continues to be an issue with this filter. We recognize that a limitation of our study was the lack of systematic follow-up for clinically silent complications. Further studies to evaluate longer term outcomes and effectiveness of this filter are warranted.

Peridontal disease : the overlooked diabetes complication

Periodontal diseases are infectious processes that occur in the presence of bacteria, which trigger an inflammatory response. Periodontal disease is associated with many medical conditions, including diabetes mellitus and its complications (such as kidney disease). It has been described as the "sixth diabetes complication" but is often overlooked in routine diabetes management and complication screening processes. Proactive, preventative dental and diabetes self care, as well as regular dental and diabetes assessment, are important management strategies because periodontal disease contributes to the progression of impaired glucose tolerance to diabetes mellitus and to hyperglycemia in individuals with established diabetes.