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Abstract Best practice for improving strength and power through resistance strength training has been the subject of much research and subsequent conjecture. Much of the conjecture can be attributed to methodological discrepancies. The type of dynamometry used in testing, the training experience of research participants, the specific technique employed in a lift, and the methods of collection and calculation all impact on the final variables of interest. This review examines contraction force specificity by first addressing the methodological issues surrounding our interpretation of the results. Then we address the kinematics and kinetics associated with single and multiple repetitions in relation to the development of strength, power, and functional performance. This discussion provides the delimitations for analysis of subsequent training studies. Finally, recommendations are formulated with the aim of assisting assessment and training practice as well as providing directions for future research. The results of this review suggest that the enhancements in performance resulting from resistance training are context specific in experienced resistance-trained participants. Thus, specific conditioning could be required to achieve improvements in functional performance in this group. 相似文献
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The role parents can play in supporting early reading attainment is well documented. There is still, however, a need to understand what motivates parents to become involved in reading at home with their child. Past research, based upon correlational studies, has mixed findings regarding the influence of the teacher and the child on parents’ motivation at home. Through two quasi-experiments, the present study explored the influence of teacher invitations in Kindergarten classes, and child invitations in Grade 2 classes on completion rates of a home reading challenge. The completion of the home reading among families was investigated across two metropolitan schools in Sydney, Australia. Both of the interventions resulted in significantly higher completion rates compared to control groups (teacher invitations: d = .68; child invitations: d = .73). This paper adds to existing research by providing a clearer picture of the cause-and-effect relationship between schools’ use of invitations to facilitate children’s home reading. 相似文献
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Depletion of the Earth’s ozone layer is one of the major environmental concerns for the new millennium having serious implications on human health, agriculture and climate. In the past decades, research by the international scientific community has been directed towards understanding the impact of human interference on the Earth’s atmosphere. The importance of ozone radiation absorption in the atmosphere and the general kinetics of the stratospheric ozone depletion mechanisms have motivated many theoretical and experimental studies on various chemical species. The distribution of ozone and other trace gases in the atmosphere is governed by the complex interaction of dynamical, chemical and radiative processes. This article concentrates on the basic concepts underlying the problems that may be faced by humankind due to reduction in the ozone layer in coming decades, and the ways in which the scientific community can contribute to predicting and remediating these effects through design of international treaties, regulations and amendments. 相似文献
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The beliefs and attitudes of teachers are an important element in the development of inclusive education and its associated practices. Teacher education is seen as crucial in helping to develop positive attitudes and beliefs that are thought to promote inclusion, although attempts to reform teacher education in order to address issues of inclusion are complex. The paper reports the findings from a set of surveys that studied student teachers' attitudes to, and beliefs about, inclusion and exclusion at the beginning and end of a newly reformed 1‐year professional graduate diploma course at the University of Aberdeen, which places inclusion at the heart of the programme. The findings from the surveys indicate that both primary and secondary student teachers' attitudes and beliefs towards the principles of inclusive education remain positive throughout the course and are largely undiminished by school experience. This contradicts some findings that are reported elsewhere, where attitudes and beliefs become more negative following experience in schools. Findings from this study also show that attitudes, beliefs and understandings of the principles of inclusion are enhanced by consideration of the ideas underpinning ‘Learning without Limits’. 相似文献
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