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This project examined 23 teachers’ involvement in a curricular project to integrate physical activity into the school day. The teachers represented all grade levels and worked in schools that served Native American students in the United States. Interviews occurred twice during the year-long project. Data were analyzed via constant comparison. Teachers’ willingness to engage was influenced positively by caring about students and their own personal wellness history. Their engagement was impeded by institutional factors of scheduling and assessment pressures. The results provide insights into how teachers might be persuaded to and prepared for the implementation of similar programs in new locations. 相似文献
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The performance of the ice hockey slap and wrist shots: the effects of stick construction and player skill 总被引：1，自引：0，他引：1
T.?-C.?Wu D.?PearsallEmail author A.?Hodges R.?Turcotte R.?Lefebvre D.?Montgomery H.?Bateni 《Sports Engineering》2003,6(1):31-39
The purpose of this study was to examine the interaction of players’ skill level, body strength, and sticks of various construction
and stiffness on the performance of the slap and wrist shots in ice hockey. Twenty male and twenty female subjects were tested.
Ten of each gender group were considered skilled and ten unskilled. In addition to general strength tests, each subject performed
the slap and wrist shots with three stick shafts of different construction and stiffness. Shot mechanics were evaluated by
simultaneously recording ground reaction forces from a force plate, stick movement and bending from high speed filming and
peak puck velocity from a radar gun. Data were analysed with a 4-way repeated measures ANOVA for several dependent variables
including peak puck velocity, peak Z (vertical) force, peak bending and stick to ground angles, peak angular deflection of
the shaft, and hand placement on the stick. The results indicated that: 1) the slap shot was much faster than the wrist shot
corresponding to greater vertical loading force, stick bending, and greater width of the hand placement; 2) the puck velocity
was influenced by skill level and body strength but not stick type; and, 3) that skilled players were able to generate more
vertical force and bend of the stick, in part, by adjusting their hand positions on the stick. Further studies are needed
to address the specific influence of body strength and skill on the techniques of these shots and in relation to stick material
and construction properties. 相似文献
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In this article, we examine the question of what information is processed during observational learning by evaluating a variety of methods, theories, and empirical data. Initially, we review work involving neuroimaging techniques and infant imitation. We then evaluate data from behavioural experiments involving adults, wherein a variety of attempts have been made to isolate the critical or minimal information constraining the acquisition of coordination. This body of research has included comparisons between video and point-light displays, manipulations to the amount and type of information presented in the display, the collection of point-of-gaze data, and manipulations to the task context in terms of outcome goals. We conclude that observational learning is governed by specific features of the model's action (i.e. motions of the end effector) and the task (i.e. outcome constraints) and, in contrast with traditional theoretical modelling, more global aspects of a model (i.e. the relative motions within and between joints) do not appear to be the primary method for constraining action execution. 相似文献
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