Reliability and validity of the Zebris FDM-THQ instrumented treadmill during running trials     

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 (F_max), 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   

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  

Ranson CA  Burnett AF  King M  Patel N  O'Sullivan PB 《Journal of sports sciences》2008,26(3):267-276

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   

Comparative education research: poststructuralist possibilities [1]     

Peter Ninnes  Gregory Burnett 《比较教育学》2003,39(3):279-297

Various authors have charted the changing and intertwined emphases in comparative education over the last four decades, including modernisation and development, socially critical and neo-Marxist perspectives, and ethnography and phenomenology. Ideas from postpositivist thinking—postmodernism, poststructuralism, and postcolonialism—have been particularly challenging to comparative education, because they disrupt the power structures that imbue much of comparative education and challenge the metanarratives of progress, modernity, dominance and subordination that have been the life blood of the major sets of ideas in the field. In order to examine in part the way in which comparative education is opening itself up to these challenging paradigms, we examine the shifts, developments and omissions in the use of poststructural theoretical frameworks and methodologies in comparative education in the period 1991–1999 and provide a constructive contribution to the debates about the future directions of comparative education in a rapidly internationalising and globalising world.  相似文献   

Mapping Multiple Literacies: An Introduction to Deleuzian Literacy Studies by Diana Masny and David R. Cole (2012) London: Continuum. ISBN: 978‐1‐4411‐4920‐6 £70 190pp     

Cathy Burnett 《Literacy》2016,50(1):50-51

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Children's Self‐talk and Significant Others’ Positive and Negative Statements     

Paul C. Burnett 《教育心理学》1996,16(1):57-67

A sample of 675 elementary school children in Grades 3‐7 were administered the Self‐talk Inventory and the Significant Others’ Statements Inventory. The psychometric properties of both scales were investigated and the relationships between positive and negative self‐talk and significant others’ (parents, teachers, siblings and peers) positive and negative statements were explored using correlational and multiple regression analyses. Sex and age differences were also examined. The significant relationships and differences are described.  相似文献   

Caution: The use of an electromagnetic device to measure trunk kinematics on rowing ergometers     

Leo Ng  Angus Burnett  Amity Campbell  Peter O'Sullivan 《Sports biomechanics / International Society of Biomechanics in Sports》2013,12(3):255-259

The aim of the study was to determine the accuracy and variability of an electromagnetic device in measuring spinal kinematics on a traditional and replica rowing ergometer. Kinematic data collected from the 3-Space Fastrak^TM system using a Standard Concept II ergometer were compared with a replica ergometer that was in part, composed of non-ferrous materials (modified ergometer). The Fastrak's sensors were fixed to a wooden “spine” with known angles (as measured by an inclinometer). The mean inclinometer angle from four sensors (1 ± 0.2°) was significantly different than the mean angle recorded on the standard ergometer ( ? 5.4 ± 3.4°) (p = 0.007) whilst the angles recorded on the modified ergometer (1.4 ± 0.8°) were statistically equivalent to the inclinometer recordings (p = 0.660). These results indicate that the presence of ferrous material in a standard ergometer reduced the accuracy and increased the variability of data collected with the electromagnetic device. However, information collected on largely non-ferrous ergometers can provide coaches, biomechanists and clinicians with a quick and effective way to measure trunk kinematics during ergometer rowing.  相似文献   

Three-dimensional trunk kinematics in golf: between-club differences and relationships to clubhead speed     

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   

The (im)materiality of literacy: the significance of subjectivity to new literacies research     

Cathy Burnett  Guy Merchant  Kate Pahl  Jennifer Rowsell 《Discourse: Studies in the Cultural Politics of Education》2014,35(1):90-103

This article deconstructs the online and offline experience to show its complexities and idiosyncratic nature. It proposes a theoretical framework designed to conceptualise aspects of meaning-making across on- and offline contexts. In arguing for the ‘(im)materiality’ of literacy, it makes four propositions which highlight the complex and diverse relationships between the immaterial and material associated with meaning-making. Complementing existing sociocultural perspectives on literacy, the article draws attention to the significance of relationships between space, mediation, materiality and embodiment to literacy practices. This in turn emphasises the importance of the subjective in understanding how different locations, experiences and so forth inflect literacy practice. The article concludes by drawing on the Deleuzian concept of the ‘baroque’ to suggest that this focus on articulations between the material and immaterial helps us to see literacy as multiply and flexibly situated.  相似文献   

Supporting families: a nurturing teacher education strategy in Nauru     

Terence Sullivan  Penelope Serow  Neil Taylor  Emily Angell  Jodana Tarrant  Greg Burnett 《Asia-Pacific Journal of Teacher Education》2017,45(1):39-52

There has been little recent documentation concerning Pacific family support for family members locally involved in university study in their Pacific home country and how such responses affect both parties. Some studies dealing with family support for student family members, including Pacific families residing in the USA, have been published. A New Zealand Ministry of Education report on Pasifika students’ educational success rates raised the need for effective family support contexts. Another study researched the family support negotiation patterns of mature-age part-time students in Australia, Hong Kong and Papua New Guinea. Only one University of the South Pacific research focused on Pacific family and community expectations of family members studying and residing with their families in their Pacific home countries. This Nauru-based study describes mixed support responses from Nauruan families towards their teacher education student family members and Nauru Department of Education student engagement and well-being development strategies.  相似文献   

Reflective Teachers and Teacher Educators in the Pacific Region: Conversations with us not about us   总被引：1，自引：0，他引：1  

Greg Burnett  Govinda Ishwar Lingam 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》2007,53(3):303-321

This article reports on a study of Pacific primary school teachers’ and university lecturers’ reflections on their involvement in the in-service Bachelor of Education degree programme offered at the regional University of the South Pacific (USP) in Fiji. Two rich sets of data have emerged from this study. Firstly, there are a number of critical reflections by ourselves as teacher educators concerning levels of equitable student access and participation in our degree as it is reconceptualised for distance and flexible delivery to increase levels of teacher professionalism across the Pacific region. Secondly, there has emerged a set of statements from teachers themselves about: teaching and learning; professional development opportunities; and what it means to be a professional educator in the Pacific region. This later data suggests an alternative set of voices in what has largely been a “conversation between us about them” conducted by Ministries of Education, Curriculum Development Units, USP, other educational bodies and the media in the Pacific, but particularly Fiji, about teachers and teachers’ work. Critical reflection upon our own practice as teacher educators and the voices of experienced teachers are particularly pertinent not only as we seek to reshape a degree programme to suit the needs of the region’s primary school teachers but also as “rethinking” debates about the purposes of education in the Pacific region are on-going yet exclusive.  相似文献