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71.
Christopher Joyce Angus Burnett Jodie Cochrane Kevin Ball 《Sports biomechanics / International Society of Biomechanics in Sports》2013,12(2):108-120
The aims of this study were (i) to determine whether significant three-dimensional (3D) trunk kinematic differences existed between a driver and a five-iron during a golf swing; and (ii) to determine the anthropometric, physiological, and trunk kinematic variables associated with clubhead speed. Trunk range of motion and golf swing kinematic data were collected from 15 low-handicap male golfers (handicap = 2.5 ± 1.9). Data were collected using a 10-camera motion capture system operating at 250 Hz. Data on clubhead speed and ball velocity were collected using a real-time launch monitor. Paired t-tests revealed nine significant (p ≤ 0.0019) between-club differences for golf swing kinematics, namely trunk and lower trunk flexion/extension and lower trunk axial rotation. Multiple regression analyses explained 33.7–66.7% of the variance in clubhead speed for the driver and five-iron, respectively, with both trunk and lower trunk variables showing associations with clubhead speed. Future studies should consider the role of the upper limbs and modifiable features of the golf club in developing clubhead speed for the driver in particular. 相似文献
72.
Within mathematics education research, the responses to the Programme for International Student Assessment’s (PISA’s) international testing regime tend to accept its framework and results as necessary points of reference, even when offering a critical reinterpretation or challenging national policy discourses based on PISA. In this article, we offer a different approach to the critique of PISA, drawing on theoretical tools provided by Bernstein and Foucault, to ask what the PISA regime achieves. Our understanding of this achievement encompasses both the production of knowledge structures and the production of students, teachers and other agents as subjects. We propose that the theoretical approach we offer provides a methodological entry point into analysis of the texts comprising the PISA mathematics regime. Analysis of a single PISA item is used to illustrate the insights that may be gained from such a theoretical lens. Such insights into the logic of PISA have the potential to allow us better to understand and hence contest the role that PISA and other large-scale assessment regimes may play in global and local policy discourses. 相似文献
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Surveys of students studying an introductory science course at a distance indicated that they had very favourable attitudes to CD‐ROM multimedia activities that are an integral part of the course teaching package. The research reported here focused on how students actually studied as they worked through the activities. Most students worked on the activities at the place indicated in the course materials and they generally studied them in one session. The majority made notes and were satisfied with their value, though only a small number used on‐screen facilities for making their notes. The instructions for navigating through the sequences left only a small number of students unsure of how to proceed. A small number of students also reported being unable to answer the questions in the activities. The Approaches to Studying Inventory (Richardson, 1990) was included in the survey, and it was found that students who adopt a predominantly ‘meaning orientation’ to studying had significantly more favourable attitudes to the multimedia activities than those who adopt a predominantly ‘reproducing orientation’. The latter students had a significantly higher preference for printed material rather than multimedia activities. The limitations of the surveys are identified and suggestions are made for future evaluation and research into students’ experiences in using multimedia activities, and for setting it in a broader framework of students’ patterns of study and learning 相似文献
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Merus Cochrane Keith D. Ballard 《International Journal of Disability, Development & Education》1986,33(2):91-102
This study describes the use of a consultation‐collaboration model of intervention in which a psychologist and a teacher worked jointly to establish a remedial reading program for five special needs children placed in a regular primary school class. Repeated measures data showed marked increases in reading skills and book reading levels, and a substantial increase over zero baseline levels in independent reading during class reading times. The teacher commented favourably on the consultation model used and agreed with parents’ observations that significant reading gains had been made by their children. 相似文献
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The study examined the effect of stress inoculation training on the level of self‐reported stress and anxiety, overt signs of distress and the physiological impact of the stress of abseiling. Twenty volunteer subjects were randomly assigned to either a ‘no training’ control group or a stress inoculation training group, following which both groups of subjects had to complete a test abseil from the roof of a 21.2 m building. Prior to descent, two self‐report measures were taken: an intensity score derived from the word or phrase chosen by subjects from the Perceived Stress Index to best describe their feelings and a state anxiety score from Spielberger's State Trait Anxiety Inventory. Overt distress was also evaluated by a ‘blind’ observer also using the Perceived Stress Index. In addition, heart rate was monitored just prior to and throughout the abseil using a telemetry system. The stress inoculation group showed significantly less self‐reported anxiety and stress and less behavioural signs of distress as judged by the observer. However, there were no significant differences between the groups in terms of heart rate. In addition, while self‐report and the assessment of the observer were highly inter‐correlated, these measures were poorly correlated with heart rate. 相似文献
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Christopher J. Gidlow Tom Cochrane Rachel Davey Hannah Smith 《Journal of sports sciences》2013,31(13):1411-1419
Abstract The aim of this study was to compare in-school and out-of-school physical activity within a representative sample. Socio-demographic, physical activity, and anthropometric data were collected from a random sample of children (250 boys, 253 girls) aged 3–16 years attending nine primary and two secondary schools. Actigraph GT1M accelerometers, worn for seven days, were used to estimate physical activity levels for in-school (typically 09.00–15.00 h), out-of-school (weekday), and weekend periods. Physical activity as accelerometer counts per minute were lower in school versus out of school overall (in school: 437.2 ± 172.9; out of school: 575.5 ± 202.8; P < 0.001), especially in secondary school pupils (secondary: 321.6 ± 127.5; primary: 579.2 ± 216.3; P < 0.001). Minutes of moderate-to-vigorous physical activity accumulated in school accounted for 29.4 ± 9.8% of total weekly moderate-to-vigorous physical activity overall but varied by sector (preschool: 37.4 ± 6.2%; primary: 33.6 ± 8.1%; secondary: 23.0 ± 9.3%; F = 114.3, P < 0.001). Approximately half of the children with the lowest in-school activity compensated out of school during the week (47.4%) and about one-third at the weekend (30.0%). Overall, physical activity during the school day appears to be lower than that out of school, especially in secondary school children, who accumulate a lower proportion of their total weekly moderate-to-vigorous physical activity at school than younger children. As low in-school activity was compensated for beyond the school setting by less than half of children, promoting physical activity within the school day is important, especially in secondary schools. 相似文献