Acceleration patterns in the lower and upper trunk during running

Abstract

The purpose of the present study was to relate 3D acceleration patterns of the lower and upper trunk during running to running gait cycle, assess the validity of stride duration estimated from acceleration patterns, investigate speed-dependent changes in acceleration, and examine the test–retest reliability of these parameters. Thirteen healthy young men performed two running trials each on a treadmill and on land at three speeds (slow, preferred, and fast). The 3D accelerations were measured at the L3 spinous process (lower trunk) and the ensiform process (upper trunk) and synchronised with digital video data. The amplitude and root mean square of acceleration and stride duration were calculated and then analysed by three-way analysis of variance to test effects of running conditions, device location, and running speed. Bland-Altman analysis was used to evaluate the test–retest reliability. Marked changes in acceleration were observed in relation to foot strike during running. Stride durations calculated from the vertical accelerations were nearly equal to those estimated from video data. There were significant speed effects on all parameters, and the low test–retest reliability was confirmed in the anterior–posterior acceleration during treadmill running and the anterior–posterior acceleration at slow speed during treadmill and overground running.     

“长株潭”两型社会体育科技服务研究

通过完善"长株潭"两型社会体育管理部门的工作机制、设立体育科技信息服务机构、成立"体育产品生产技术指标"服务机构、完善全民健身服务机制等措施可有效提高"长株潭"两型社会体育科技服务的水平。     

Physical Education Teachers in their Figurations: A Sociological Analysis of Everyday 'Philosophies'

This paper seeks to explain the socio-genesis of PE teachers' 'Philosophical' (or, rather, ideological) orientations from a sociological (specifically, figurational) perspective. Starting from the premise that such 'philosophies' cannot be adequately explained by studying either the ideas themselves or the teacher (him or herself) in isolation, it argues that PE teachers' everyday 'philosophies', and the underlying ideologies therein, can only be fully understood when teachers are located in the figurations they form with each other--as inescapably interdependent people. Two salient dimensions of the figurations of PE teachers are identified as their deeply-rooted attachments and associated convictions (e.g. towards the value of sport) and their practice of PE or, more precisely, the constraints circumscribing their practice. It is claimed that whilst various social processes (such as medicalization and professionalization) may well prove to be motors that drive psychical change towards health and academic ideologies within PE teachers' views on the nature and purposes of their subject, the particular blend of continuity alongside change--to be found at the personal, local and national levels of their figurations--manifests itself in the continuing pre-eminence of a sporting ideology in the everyday 'philosophies' of PE teachers.     

Busy doing nothing? Physical education teachers' perceptions of young people's participation in leisure-sport

Within the substantial body of research examining the professional knowledge of physical education (PE) teachers one particular area remains relatively under-explored: namely, their understandings of young people's participation in leisure-sport and the implications of this, if any, for the practice of PE. There are grounds for thinking, however, that in this aspect of their professional knowledge PE teachers might not be as conversant with patterns of participation—among young people, generally, and their own pupils, in particular—as one might expect. In order to examine this tentative hypothesis, the present study involved focus groups with a total of 29 PE teachers at six secondary schools in England. A central finding of the study was that PE teachers' perceptions of their youngsters' leisure-sport lives tended to be characterized by a blend of myth and reality. Many teachers, for example, underestimated the levels of participation in leisure-sport both of their own pupils and the 15–16 years age group, generally. Nevertheless, the teachers' observations regarding what amounted to growing and diversifying sporting repertoires among their pupils were, to a greater or lesser degree, commensurate with the profiles reported by the pupils, and with wider trends associated with the changing lifestyles and preferences of young people. The paper concludes by briefly locating this study of professional knowledge within the sociology of knowledge, while observing that the content and form of PE for Year 11 pupils at the six schools in this study appeared to be informed by the common-sense, everyday knowledge of PE teachers rather than by evidence from national or local surveys of young people or studies of their own pupils.     

‘The helping,the fixtures,the kits,the gear,the gum shields,the food,the snacks,the waiting,the rain,the car rides … ’: social class,parenting and children's organised activities

ABSTRACT

Class-related parenting cultures and ideologies have been of considerable interest to academics over the last two decades. Much of the research thus far has focused on exploring Annette Lareau's conceptualisations of ‘natural growth’ and ‘concerted cultivation’ and the implications for outcomes in relation to education. The focus of the present article is organised activities, which are a central but as yet relatively under-researched feature of middle-class parenting. The findings are based upon 73 semi-structured interviews with parents and children from 48 middle-class families living in and around a small city in northern England. The article reveals that initiating and facilitating children's organised activities is considered a central aspect of ‘good’ parenting in middle-class social networks. It is shown how this is a consequence of several developments within society over the past three decades or so, including the rising levels of maternal employment, the growing competitiveness of the labour market and the increasing concerns related to children's health and safety. It is argued that these developments have heightened middle-class parents’ predisposition to not only be involved with and invest in their children's leisure biographies, but to do so in a more deliberate, rigorous and rational manner.     

Educational quality in economic development: Ten propositions and an application to the South Pacific

Over the last two decades, research into the role of education in economic development has begun to pay attention to educational quality and its effect on learning outcomes. In this paper recent research on educational quality is reviewed and its application to the island economies of the South Pacific is assessed. While there is considerable variation among the countries, the paper demonstrates the pervasive nature of school quality problems in the region. Those factors which have the greatest bearing on school quality in the region are isolated. These factors are: the quality of teachers; the availability of learning materials; initial instruction in the mother tongue; the quality of educational management; and curriculum reform. The paper concludes by arguing that strategies to improve quality will fail unless they recognise important complementarities between the factors determining quality.

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Zusammenfassung In den letzten zwei Jahrzehnten hat man begonnen, die Forschung über die Rolle des Bildungswesens in der wirtschaftlichen Entwicklung eines Landes auf Bildungsqualität und ihren Einfluß auf die Lernergebnisse auszudehnen. In diesem Artikel werden die neuesten Forschungen über die Qualität der Bildung aufgegriffen und eine mögliche Anwendung für die Inselwirtschaften im Südpazifik diskutiert. Dieser Artikel weist auf die überall gegenwärtige Problematik der Schulqualität in dieser Region trotz erheblicher Unterschiede zwischen den Ländern hin. Man fand folgende dafür verantwortliche Gründe heraus: Lehrerqualität, Erhältlichkeit von Lernmaterialien, Erziehung in der Muttersprache, Qualität der Schulleitung und Reform der Curricula. Der Artikel schließt mit dem Argument, daß Strategien zur Verbesserung der Qualität keinen Erfolg haben werden, solange wesentliche Zusammenhänge zwischen den qualitätsbestimmenden Faktoren nicht erkannt werden.

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Résumé Au cours des vingt dernières années, la recherche sur le rôle de l'éducation dans le développement économique a commencé à prêter attention à la qualité de l'éducation et à ses effets sur les rendements de l'apprentissage. Dans le présent article, on procède à l'examen de la recherche entreprise récemment dans ce domaine et à l'évaluation de son application aux économies des îles du Pacifique sud. Tandis qu'on note une variation considérable entre les pays, on démontre la nature diffuse des problèmes relatifs à la qualité des écoles dans cette région. Les facteurs qui ont la plus grande influence sur la qualité de l'école dans la région sont isolés: qualité des enseignants, existence de matériels d'apprentissage, enseignement initial dans la langue maternelle, qualité de la gestion de l'éducation, réforme du curriculum. Cet article conclut en arguant que les stratégies devant améliorer la qualité dans ce domaine échoueront à moins qu'elles reconnaissent les complémentarités importantes entre les facteurs qui déterminent la qualité.

     

Acquiring a Naive Theory of Kinship through Inference

The present study focused on how children acquire a naive theory of kinship. Young children appear to have theoretical beliefs about the biological meaning of kinship relations. It was argued here that these beliefs reflect inductive inferences from simple facts about prenatal growth (e.g, where babies grow). An informal model of the inferences linking facts to theory was proposed and tested. In Experiment 1, 4–7-year-olds who knew the basic facts of prenatal growth were most likely to also express the naive theory of kinship. Virtually none of the children who expressed the theory were unaware of the basic facts. In Experiment 2, teaching the facts to a sample of preschoolers led to some increase in their acceptance of the kinship theory. Overall, the results implicate a type of theory building that involves inferences from preexisting knowledge rather than structural change, use of analogy, or acquisition of new knowledge.     

A Comparison between Inspection Reports on the Management of School Attendance Throughout the Education Service

This is the first article to compare and contrast the outcomes of Office for Standards in Education (Ofsted) reports on the management of school attendance issues in primary and secondary schools, out-of-school and local education authorities (LEA) provision. The findings indicate that schools and LEAs are judged using very strict criteria based on a school's or LEA's authorized or unauthorized rates of attendance, which are then compared with national norms, targets and Ofsted criteria. By contrast, out-of-school providers, often pupil referral units (PRUs), are given much more latitude despite their more obvious and serious attendance difficulties. This paper presents an insight into the reasons given by Ofsted inspectors for making either their positive or negative judgements on schools', PRUs' or LEAs' performances on the management of their attendance agenda. The implications of these findings are considered and conclusions drawn based on the evidence. Further research will be necessary to compare the findings in this paper with subsequent outcomes given the proposed changes with Ofsted's methodology and criteria for conducting its future inspections.     

Factors affecting the performance and satisfaction of adult men and women attending college

Questionnaire data collected from male and female university students 25 years of age or older were used to investigate correlates of their performance, satisfaction, and adjustment in college. Men reported lower levels of performance and satisfaction. Multiple regression analyses of predictors of college grade-point average, satisfaction with college, and affective changes occurring while in college indicated that these three measures were predicted by demographic variables, by aspects of the college experience, by the external out-of-college responsibilities of these students, and by their goals. Each of the three dependent measures was predicted by a different subset of these variables.     

Recasting the academic workforce: why the attractiveness of the academic profession needs to be increased and eight possible strategies for how to go about this from an Australian perspective

This article analyses academic work and the academic workforce in the context of current dynamics and likely futures. It discusses the significance of academic work, reviews workforce characteristics, and analyses tensions and pressures. Prevailing conceptualisations, it is argued, do not reflect the current situation in which the profession finds itself, and would provide a very shaky foundation on which to build the future workforce. There is an overarching need for a fresh conceptualisation of academic work that is authentic and feasible and suggestions are offered of what this might look like. A number of strategies are proposed how such a recasting might be implemented. The paper works from Australian research, and make suggestions for other systems.