排序方式： 共有73条查询结果，搜索用时 31 毫秒
31.
Ken Van Alsenoy Athol Thomson Angus Burnett 《Sports biomechanics / International Society of Biomechanics in Sports》2019,18(5):501-514
Little is known about the reliability, validity and smallest detectable differences of selected kinetic and temporal variables recorded by the Zebris FDM-THQ instrumented treadmill especially during running. Twenty male participants (age = 31.9 years (±5.6), height = 1.81 m (±0.08), mass = 80.2 kg (±9.5), body mass index = 24.53 kg/m2 (±2.53)) walked (5 km/h) and ran (10 and 15 km/h) on an instrumented treadmill, wearing running shoes fitted with Pedar-X insoles. A test-double retest protocol was conducted over two consecutive days. Maximal vertical force (Fmax), contact time (CT) and flight time (FT) data from 10 consecutive steps were collected. Within- and between-day reliability, smallest detectable differences (SDD) and validity (95% limits of agreement (LOA)) were calculated. ICC values for the Zebris for Fmax were acceptable (ICC ≥ 0.7) while CT and FT reliability indices were predominantly good (ICC ≥ 0.8) to excellent (ICC ≥ 0.9). The Zebris significantly underestimated Fmax when compared with the Pedar-X. The 95% LOA increased with speed. SDD ranged between 96 N and 169 N for Fmax, 0.017s and 0.055s for CT and 0.021s and 0.026s for FT. In conclusion, Zebris reliability was acceptable to excellent for the variables examined, but inferior in comparison with Pedar-X. With increased running speeds, a bias effect (underestimation) existed for the Zebris compared with Pedar-X. 相似文献
32.
The relationship between bowling action classification and three-dimensional lower trunk motion in fast bowlers in cricket 总被引：1，自引：1，他引：0
Lower back injuries, specifically lumbar stress fractures, account for the most lost playing time in professional cricket. The aims of this study were to quantify the proportion of lower trunk motion used during the delivery stride of fast bowling and to examine the relationship between the current fast bowling action classification system and potentially injurious kinematics of the lower trunk. Three-dimensional kinematic data were collected from 50 male professional fast bowlers during a standing active range of motion trial and three fast bowling trials. A high percentage of the fast bowlers used a mixed bowling action attributable to having shoulder counter-rotation greater than 30 degrees. The greatest proportion of lower trunk extension (26%), contralateral side-flexion (129%), and ipsilateral rotation (79%) was used during the front foot contact phase of the fast bowling delivery stride. There was no significant difference in the proportions of available lower trunk extension, contralateral side-flexion, and ipsilateral rotation range of motion used during fast bowling by mixed and non-mixed action bowlers. Motion of the lower trunk, particularly side-flexion, during front foot contact, in addition to variables previously known to be related to back injury (e.g. shoulder counter-rotation), should be examined in future cross-sectional and prospective studies examining the fast bowling action and low back injury. 相似文献
33.
Lawrence Angus 《British Journal of Sociology of Education》1994,15(1):79-91
In this paper I take issue with the claim of Ozga (1992) that because of the poor quality of many recent texts on education management, and their lack of a sociological perspective, they are not proper material for analysis in the British Journal of Sociology of Education. I argue that sociological analysis of such texts is an urgent priority because they have gained credibility among education practitioners and provide a spurious legitimacy to new right policy directions. This general argument is illustrated by focussing on four specific limitations of one of the most popular current texts on education management. 相似文献
34.
Jennifer Freeman Sarah Wilkinson Jennifer Kowitt Angus Kittelman K. Brigid Flannery 《Educational Research and Evaluation》2018,24(8):481-503
High rates of absenteeism are often an early warning sign for negative long-term outcomes. Typical high school attendance policies, especially those that are punitive in nature, can make attendance problems worse. Fortunately, evidence suggests that even small improvements in student attendance can lead to meaningful outcomes. To support this recovery, high schools must have access to the most effective and efficient attendance interventions. The purpose of this systematic literature review is to summarize the current empirical research related to improving attendance in high schools. Results indicate that the 3 most common elements of high school attendance interventions with desired outcomes were skills training, family support, and incentive-based strategies. We discuss implications for future research and suggest that developing a continuum of research-supported practices within a multi-tiered system of support framework may be an effective way for schools to proactively and efficiently improve student attendance at the high school level. 相似文献
35.
Angus Duff 《教育心理学》2004,24(5):699-709
Given the psychometric limitations of existing measures of Kolb's experiential learning model (ELM), two new scales of learning styles have been developed. The validity of these scales has been supported in samples of undergraduate and MBA students in the USA. This paper provides evidence of some psychometric properties of scores yielded by these scales using samples of undergraduate students in the UK. Only limited support is found for the internal consistency reliability and construct validity of scores produced by the scales. However, an item attrition exercise identifies a two‐factor solution providing an acceptable fit to the data. The scales are reported as being positively correlated with academic performance and prior academic achievement. Despite the mixed evidence, we suggest further development of the scales is warranted to create a psychometrically sound measure of the ELM. 相似文献
36.
James H. Dugdale Dajo Sanders Tony Myers A. Mark Williams Angus M. Hunter 《Journal of sports sciences》2020,38(11-12):1304-1312
ABSTRACT Subjective and objective assessments may be used congruently when making decisions regarding player recruitment in soccer, yet there have been few attempts to examine the level of agreement between these methods. Therefore, we compare levels of agreement between subjective and objective assessments of physical qualities associated with youth soccer performance. In total, 80 male youth soccer players (13.2 ± 1.9 years), and 12 professional coaches volunteered to participate. Players were objectively assessed using five fitness measures: Yo-Yo Intermittent Recovery Test Level 1; Countermovement vertical jump; Functional Movement Screen?; 5/20 m sprint; alongside anthropometric measures. Additionally, coaches subjectively rated each player on the same five physical qualities using 5-point Likert scales. Inter-rater agreement between ratings from lead and assistant coaches was established for each age group. Moreover, Bayesian regression models were fitted to determine how well coach ratings were able to predict fitness test performance. Although inter-rater agreement between lead and assistant coaches was moderate-to-substantial (ω = 0.48–0.68), relationships between coaches subjective rating’s and corresponding fitness test performance were only highly related for the highest and lowest performing players. We suggest that while ratings derived from objective and subjective assessment methods may be related when attempting to differentiate between distinct populations, concerns exist when evaluating homogeneous samples using these methods. Our data highlight the benefits of using both types of measures in the talent identification process. 相似文献
37.
The authors respond to the charge that reading for intentionality necessarily leads critics into a naive conception of agency. They argue for methods that hold authors, texts, and audiences in productive tension. Genetic criticism is offered as a perspective in which the author may be integrated within this tension. Using Di Gregorio and Gill's study of Darwin's marginalia and Campbell's examination of Darwin's notebooks, the authors apply genetic criticism to Darwin's writings to demonstrate that intentionalist readings offer scholars a useful critical resource. 相似文献
38.
A 6-month analysis of training-intensity distribution and physiological adaptation in Ironman triathletes 总被引：2，自引：2，他引：0
In the present study, we analysed the training-intensity distribution and physiological adaptations over a 6-month period preceding an Ironman triathlon race. Ten athletes (mean ± s: age 43 ± 3 years, mass 78.3 ± 10.3 kg, stature 1.79 ± 0.05 m) participated in the study. The study consisted of three training periods (A, B, C), each of approximately 2 months' duration, and four testing weeks. Testing consisted of incremental tests to exhaustion for swimming, cycling and running, and assessments for anthropometry plus cardiovascular and pulmonary measures. The lactate threshold and the lactate turnpoint were used to demarcate three discipline-specific, exercise-intensity zones. The mean percentage of time spent in zones 1, 2, and 3 was 69 ± 9%, 25 ± 8%, and 6 ± 2% for periods A-C combined. Only modest physiological adaptation occurred throughout the 6-month period, with small to moderate effect sizes at best. Relationships between the training volume/training load and the training-intensity distribution with the changes in key measures of adaptation were weak and probably reflect differences in initial training status. Our results suggest that the effects of intensity distribution are small over short-term training periods and future experimental research is needed to clarify the potential impact of intensity distribution on physiological adaptation. 相似文献
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40.
This paper reports findings from an enthographic study of educational restructuring in an Institute of Technical and Further Education (TAFE) in Victoria Australia. Educational restructuring is analysed as a process of institutional redesign and theorized in relation to recent debates in institutional theory concerning the nature of institutional change. The review distinguishes between hyperrational approaches to institutional redesign based upon assumptions about rational actors and their motivations and behaviours, and social and cultural perspectives on institutional redesign that sees purposeful institutional change achieved through processes of ‘institutional gardening’. The paper documents the way Australian governments have adopted hyperrational strategies aimed at changing education and training by reworking institutional rules that frame the day-to-day practices within particular organizations. Reworking these practices of organizing serves to steer change by restructuring and rearticulating relationships, practices and centres of power within organizations. Data drawn from interviews with the TAFE Institute Director, and various managers and teachers are used to track the effects of government steering in the TAFE Institute. This analysis shows that government steering drives management steering in the TAFE Institute, creating new imperatives and work organization. These organizational changes are influenced by local conditions and management priorities. They also call forth counter-steering by teachers and managers as they attempt to deal with change. The paper suggests that hyperrational government steering drives towards probable educational futures but is also interrupted by counter-steering oriented to other values and priorities. While there are probable futures, there are also preferred futures to be willed for and worked for. 相似文献