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Cherie Walker John Warmenhoven Peter J. Sinclair 《Sports biomechanics / International Society of Biomechanics in Sports》2019,18(2):146-162
Based on technological and analytical advances, the capability to more accurately and finitely examine biomechanical and skill characteristics of movement has improved. The purpose of this study was to use Inertial Measurement Units (IMUs) and Functional Principal Components Analysis (fPCA) to examine the role of movement variability (assessed via angular velocity), on 2 divers (1 international level; 1 national) performing the forward 3½ pike somersault dive. Analysis of angular velocity curves during ive-flight identified 5 fPCs, accounting for 96.5% of movement variability. The national diver’s scatter plots and standard deviation of fPC scores illustrated larger magnitudes of angular velocity variability across dive flight. For fPC1 and fPC3, magnitudes of SD variability were 282.6 and 201.5, respectively. The international diver illustrated more consistent angular velocity profiles, with clustering of fPCs scores (e.g., fPC1 & 3 = SD’s of 75.2 & 68.0). To account for lower variability in the international diver, the ability to better coordinate movement sequences and functionally utilise feedback in response to initiation of the somersault position is highlighted. Overall, findings highlight how both IMUs and fPCA can more holistically and finitely examine the biomechanical and skill characteristics of movement sequences with the capability to inform athlete development. 相似文献
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R. J. Walker 《Educational Studies in Mathematics》1968,1(1-2):111-117
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This article presents the findings of a study that asked teachers to narrate their interactions with learners from the perspective of the curriculum that the school adopted. Thirteen female teachers, employed at eight special secondary schools for children with profound and multiple learning difficulties in England, participated in the research. They narrated their experiences, which were consequently subject to phenomenological hermeneutic analysis. All the teachers displayed a high degree of individuality and conceptualised their work not straightforwardly as teaching the espoused curriculum, but rather as they themselves being the ‘curriculum‐in‐action’, with their practice lying alongside and only obliquely cognisant of their school's explicit provision. The narratives disclosed ongoing conflict with school leaders being interpreted as a threat to their specific pedagogic practices as well as their professionalism. The research raises questions about the ability of the ‘special curriculum’ to be truly responsive to pupils' needs within this complex pedagogical environment. 相似文献
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