The calibration and application of an individual scrummaging ergometer

Although the characteristic morphology of rugby forwards playing different positions in the rugby scrum has been well documented, a complete picture of the force characteristics that different players produce has not been evaluated. This is especially true for the movement of the centre of pressure (CoP) elicited during scrummaging in a forward direction. An individual scrummaging ergometer was therefore developed to measure the CoP of an individual scrum action using conventional torque calculations. Calibration of the measurement system revealed measured force errors within 16.6 N of the actual force and errors of less than 3.96 mm for CoP location determination. Thirty-nine club level rugby union players (22 front rows, 11 locks and six back rows) scrummed against the ergometer on an outdoor rugby field. Differences between the three groups were tested using one-way ANOVAs. The maximum force for different players was 2253.6 ± 649.0 N over the entire subject group. There were no differences in the individual compressive force between the groups [front rows: 2404.0 ± 650.3 N; locks: 2185.6 ± 568.9 N; back rows: 1826.9 ± 670.2 N (p = 0.143)]. Individually, front rows started at a higher position than back rows (p = 0.009) and were at a higher vertical position than locks when producing maximum force (p = 0.028). Front rows had lower variation in the CoP (p = 0.044) and less movement to achieve their maximum force (p = 0.020) than locks. Front rows moved less overall than back rows (p = 0.028) during the scrum trial. The design and application of the individual scrum ergometer showed with good limits of agreement that differences in force magnitude and CoP exist within scrummaging players. Practically, the application of this ergometer may assist in the individual optimisation of scrummaging performance.     

The role of science in the practice of talent identification: a case study from gymnastics in New Zealand

Abstract

Talent identification is an example of a practice where ‘scientism threatens to engulf us all.’ Talent identification and development are areas where models perceived to be scientific have been uncritically adopted into sporting practice due to the belief that they represent best practice. In this article, I track the changing talent identification systems adopted in the sport of rhythmic gymnastics in New Zealand over approximately 20 years. The findings revealed that those in decision-making positions originally adopted the perspective of scientism in introducing a physical ability test which they perceived to have scientific value. However, scientific testing was later removed owing to the now empowered gymnastics coaches drawing on what Foucault referred to as local knowledge, acquired through their own experiences. Their experiences resulted in the coaches believing in the importance of what Latour described as social practices being more significant in talent identification than scientific testing.     

Opportunity costs associated with the provision of student services: a case study of web-based lecture technology

Universities aim to provide services that are not only beneficial to students but also efficient relative to possible alternative services. Using opportunity cost, this study considers staff and student perceptions of the usefulness and valuation of web-based lecture technology (WBLT). It reveals that a quarter of students did not use WBLT while many staff members thought WBLT had a negative impact on their face-to-face teaching. Further, over a third of students sampled said they would not be affected if WBLT were not made available and many staff members felt constrained by WBLT technology. Some staff members spent a lot of time preparing WBLT while others eschewed the technology altogether. Nevertheless, a relatively small number of students place enormous value on WBLT, as do some staff, even if only simple audio of lectures are provided. The academic policy implications of this study suggest that university provision of WBLT could take into account the opportunity cost of WBLT use as a valuation-basis, possibly recovering costs through extra fees. This would allow for improved decision-making by university administrators and facilitate a move towards a useful measurement basis of WBLT. A wider academic policy implication is to consider whether all universities should produce and deliver WBLT at all and to what extent it should encourage staff to develop enhanced WBLT. Provision of sophisticated WBLT or any other service for students bears an opportunity cost in terms of less preparation by staff for face-to-face lessons or other effective teaching or research.     

Children's Prosocial and Antisocial Behaviour,as Perceived by Children,Parents and Teachers

Within the context of a widespread concern with children's antisocial behaviour, especially bullying, the development of ‘whole‐school’ policies on bullying, and also recent national guidelines which emphasise the importance of fostering children's prosocial behaviours, this research examines the extent to which children, parents and teachers exhibit within‐ and between‐group consensus, both in their perceptions and relative judgements of different forms of child prosocial and antisocial behaviours, and in their responses to such behaviours. Less consensus was found in judgements of prosodal than of antisocial behaviours, both within and between groups, and significant between‐group differences are discussed in the context of the teaching of social behaviour.     

Learned Helplessness and Dyslexia: A Carts and Horses Issue?

A survey into attitudes towards and beliefs about dyslexia among ABE teachers and providers is reported. This research appears to reveal doubt, uncertainty and confusion about dyslexia and considerable misgiving as a consequence. A marked degree of learned helplessness was apparently induced in respondents when faced with a student with a diagnosis of dyslexia. Tuition was greatly simplified and expectations lowered. Attribution theory and learned helplessness are discussed in the context of ABE. It is argued that a diagnosis of dyslexia may be a maladaptive attribution and so inevitably induce learned helplessness. Increased scepticism towards dyslexia in ABE is recommended.     

Key non-controversial concepts of population education

The important components of population education should focus on sexuality rather than sex education; content for inclusion depends upon whether the goal is population awareness or critical awareness. Population awareness is the better understanding of the nature, causes, and consequences of population changes experienced by a community, country, region. Critical awareness is the intent and ability to change the sociocultural or educational characteristics that influence fertility, mortality, and migration. 6 basic concepts with universal applicability are discussed, because if not handled properly, the topic become controversial. The concepts are linked to developing thinking or reasoning ability. The concepts are as follows: 1) respect for others, particularly those of the opposite sex; 2) development of self-esteem for both boys and girls; 3) the knowledge that planning is possible and desirable; 4) postponement of first pregnancy; 5) acceptance of responsibility for the consequences of behavior; and 6) the ability to recognize and withstand social pressure. When children learn respect for others, there is little likelihood that others will be harmed. Respect for girls and women is particularly important, and harmful stereotyping and their effects should be pointed out. The key is to develop healthy attitudes and values toward people, not just an intellectualization of gender issues. Self-esteem is used here to mean self-worth in the present and the future. Children can be helped to develop confidence, perseverance, and optimism. Children need to understand that carefully thought out decisions should precede a birth; fatalism and destiny is a choice. Postponing the first pregnancy can lead to economic, emotional, and physical benefits. Risk to the health of the mother and baby occurs during the teen years. The best time for pregnancy is between the ages of 20 and 30 years. A pregnancy in the teen years may have longterm consequences such as more pregnancy and delivery complications or infertility. Social pressure may force behavior that does not conform to one's own convictions or be applicable to best options for the individual.     

Self-guided field trips for students of environments

In many learning institutions around the world, there is a trend towards larger classes, more flexible learning pathways and reduced teaching resources. Experiential learning is often used in the form of site visits or field trips for students studying engineering, natural resource management, geography and similar disciplines. Providing opportunities for students to undertake field trips without the traditional support mechanism is one of the more challenging issues for subject designers. How can large cohorts of students gain practical exposure to various aspects of the natural or built environment? Although this is typically done using traditional site visits and fieldwork with a high staff/student ratio, the goal has been to use action research to design and develop resources to enable small groups (three or four) to make self-guided visits to sites close to campus. Multimedia resources to examine and interpret aspects of the site that relate to their on-campus learning guide the students. One critical issue in the success of these activities has been proper risk assessment and control procedures. The outcome of this research is a framework to provide a safe, active learning experience by way of self-guided field trips that is suitable for implementation with large classes.