1970-2001年间发表的训练科学英文文献的分析

尽管关于运动训练方面的科技文献越来越多,但是很少有人对这方面的文献进行总结,即使有也只是在有限的时间范围内或主要针对运动训练行为方面的.由于该方面的资料缺乏系统性和连贯性,所以,笔者在进行此项研究的过程中也受到诸多限制.     

Bayesian hierarchical modelling of basketball tracking data - a case study of spatial entropy and spatial effectiveness

ABSTRACT

Spatio-temporal data in sport is increasing rapidly, however suitable statistical methods for analysing this data are underdeveloped. The current study establishes the need for spatial statistical methods, propose a Bayesian hierarchical model as an appropriate method for comparing spatial variables, and test this model across three spatial scales. The need for spatial statistical methods was established through the identification of spatial autocorrelation. This necessitated the use of a Bayesian hierarchical model to test for an association between spatial ball movement entropy and spatial effectiveness. Posterior distribution results showed a generally positive association such that increases in entropy were associated with increases in effectiveness. The strength and confidence of the associations were impacted by the spatial scale, with the 6 × 6 grid showing the most conclusive evidence of a positive relationship; the 4 × 4 grid was mostly positive, however with a large variation; and finally, the basket-centric scale results were less conclusive. The results of the current study demonstrate the suitability of a Bayesian hierarchical model for testing for associations or differences between spatial variables. With the increase in spatial analyses in sport, this study presents an appropriate statistical method for dealing with complex problems associated with spatial analyses.     

Service-Learning for Social Justice in the Elementary Classroom: Can We Get There from Here?

This article focuses on 40 elementary school teachers' efforts to involve their students in social justice-oriented service-learning experiences and the struggles and support they encounter in doing so. The service-learning activities described here begin with student interest and initiative and focus on advocacy and concerted efforts to right unjust situations. With teacher support and guidance, students consider multiple perspectives and challenge the status quo. At times they accomplish their aims; in other cases, success is found in students learning valuable life lessons about the skills and long-term effort needed to effect change. Struggles with state mandates, required curriculum, colleagues, and parents are discussed, as well as the creative and subversive measures teachers use to address these challenges.     

Communication between children and carers during mealtimes

Mealtimes are identified as an important learning environment where socialisation and language development takes place. Caregivers can facilitate the structure of a child's learning in the mealtime setting. The aim of this study was to gain an understanding about the nature of communication in a normal population during mealtimes. This is important to help understanding about the nature of communication and interaction in children with disabilities during mealtimes. Participants were six typically developing preschool children aged from 8 months to 3;05 years. Caregivers of the children supported their child having a typical meal at home. Each mother–child dyad was video‐recorded by the researchers during a typical meal for up to 30 minutes. Each recording was transcribed by the researchers, and specific communicative features were counted and coded; caregiver comments about appropriate mealtime behaviour, child verbal and nonverbal initiation, caregiver questions and comments about meal enjoyment, caregiver praise of child, and caregiver repetition to coax feeding. A caregiver questionnaire was also completed to obtain information about the child's feeding, any early history of feeding difficulties and typical mealtime routine. The results indicated that the most considerable difference were between the dyads who had reported early feeding difficulties and those who had not reported any. Carers who supported children who had a history of early feeding difficulties used more language to manage and guide the child's behaviour during the mealtime. Caregivers who reported early feeding difficulties appeared to be more concerned with how their child was presenting at the meal (i.e., appropriate behaviour and meal enjoyment). This information has important implications for supporting children with complex needs during mealtimes.     

Analysis of reference transactions to inform library applications (apps)

Content analysis of questions asked at multiple reference service points are used to inform library application (app) development. Reduced library budgets create service gaps, and library apps present one potential solution to help users with simple wayfinding and library attribute questions. Content analysis of three years of questions asked at fifteen face-to-face service points on the campus of the University of Kentucky, Lexington, Kentucky, as well as questions received via telephone, e-mail, and chat demonstrate that library location-based questions comprise 77.6% of the total questions asked. This approach shows the potential that the study of library location-based questions has for informing library apps.     

Physiological responses to 1000-m ergometer time-trial performance in outrigger canoeing

Abstract

Graded exercise tests are commonly used to assess peak physiological capacities of athletes. However, unlike time trials, these tests do not provide performance information. The aim of this study was to examine the peak physiological responses of female outrigger canoeists to a 1000-m ergometer time trial and compare the time-trial performance to two graded exercise tests performed at increments of 7.5 W each minute and 15 W each two minutes respectively. 17 trained female outrigger canoeists completed the time trial on an outrigger canoe ergometer with heart rate (HR), stroke rate, power output, and oxygen consumption ([Vdot]O₂) determined every 15 s. The mean (± s) time-trial time was 359 ± 33 s, with a mean power output of 65 ± 16 W and mean stroke rate of 56 ± 4 strokes · min^?1. Mean values for peak [Vdot]O₂, peak heart rate, and mean heart rate were 3.17 ± 0.67 litres · min^?1, 177 ± 11 beats · min^?1, and 164 ± 12 beats · min^?1 respectively. Compared with the graded exercise tests, the time-trial elicited similar values for peak heart rate, peak power output, peak blood lactate concentration, and peak [Vdot]O₂. As a time trial is sport-specific and can simultaneously quantify sprint performance and peak physiological responses in outrigger canoeing, it is suggested that a time trial be used by coaches for crew selection as it doubles as a reliable performance measure and a protocol for monitoring peak aerobic capacity of female outrigger canoeists.     

Rhythm and reading development in school‐age children: a longitudinal study

Rhythm production in 53 children in grade 1 was investigated as a predictor of reading ability in the same children in grades 1–5. This paper reports the results of correlations and hierarchical regression analyses, controlling for shared variance between phonological awareness and naming speed. Rhythm was correlated significantly with both phonological awareness and naming speed. Rhythm predicted significant variance in reading ability at each grade level. Once phonological awareness was controlled, however, rhythm was a significant predictor only in grade 5. When naming speed was controlled, rhythm predicted unique variance in reading ability in grades 2, 3 and 5. Implications for the relationship between rhythm and the development of reading skills are discussed.     

Including all learners: QCA's approach

Judith Wade, QCA (Qualifications and Curriculum Authority) Principal Manager for Equal Opportunities and Access, outlines recent and future developments initiated by the QCA. She highlights the challenges faced by the QCA to encourage all staff to take into account all learners, including those with special educational needs. The points she makes are not only relevant to schools and LEAs (Local Education Authorities) but also to all community organisations and service providers.