排序方式： 共有26条查询结果，搜索用时 15 毫秒
1.
For activities such as squash, badminton and fencing, the ability to quickly complete a lunge and return to the start or move off in another direction is critical for success. Determining which strength qualities are important predictors of lunge performance was the focus of this study. Thirty-one male athletes performed: (1) a unilateral maximal squat (one-repetition maximum, 1-RM) and unilateral jump squat (50% 1-RM) on an instrumented supine squat machine, and (2) a forward lunge while attached to a linear transducer. We performed stepwise multiple regression analysis with lunge performance as the dependent variable and various strength, flexibility and anthropometric measures as the independent variables. From the many strength and power measures calculated, time to peak force was the best single predictor of lunge performance, which accounted for 55% of the explained variance. The best three-variable model for predicting lunge performance accounted for 76-85% of the explained variance. The models differed, however, according to whether lunge performance was expressed relative to body mass (time to peak force, mean power and relative strength = 76%) or taken as an absolute value (time to peak force, leg length and flexibility = 85%). We conclude that one to two trials were reliable for strength diagnosis and that one strength measure cannot accurately explain functional performance because other factors, such as body mass, flexibility and leg length, have diverse effects on the statistical models. 相似文献
2.
Stephen McNair 《Higher Education Quarterly》1998,52(2):162-178
The report of the National Inquiry into Higher Education (the Dearing Committee) makes much play of lifelong learning, and the last decade has seen a rapid increase in the proportion of mature learners in higher education overall. In 1993 the National Institute for Adult Continuing Education argued that the advent of lifelong learning and an adult majority in higher education called for a radical rethinking of the nature and purposes of higher education. There has been some positive change, and the Dearing report is broadly positive, but by failing to recognise the nature of the lifelong agenda, it may be too little too late. 相似文献
3.
4.
Eric Sprigings Peter McNair Grant Mawston David Sumner Mark Boocock 《Sports Engineering》2006,9(3):147-153
The intent of this project was to explore the feasibility of personalising the paddle blade size for individual flatwater
kayakers based on their power output profiles. Twelve elite male kayakers performed on a kayak ergometer at the same intensity
and resistance that they would normally experience while paddling at race pace for 500 m on the water. The kayak ergometer
was instrumented so that power profiles could be determined from the instantaneous force and velocity of the representative
centre point of the paddle blade. From the power profile information, the researchers calculated a personalised blade size
that was expected to improve performance for those kayakers differing more than 5% from the calculated ‘ideal’ size. For the
elite kayakers studied, it was recommended that seven of the paddlers should increase their blade size by approximately 5–10%.
For the remaining five paddlers, the results indicated that their current blade sizes were within the expected measurement
error of their predicted ideal value and should be retained. It is anticipated that this research will provide the theoretical
rationale for elite kayakers to see the need to personalise their blade size based on their own muscle power profiles. 相似文献
5.
Jonda C. McNair 《Children‘s Literature in Education》2008,39(3):201-212
This article examines the utilization of racial humor in Christopher Paul Curtis’ novel, The Watsons Go To Birmingham—1963.
The theoretical perspectives that inform the analysis include critical race theory and humor theory. The results of the analysis
reveal that the use of humor in this book is influenced to a significant degree by race and racism. 相似文献
6.
Brody GH Murry VM Gerrard M Gibbons FX Molgaard V McNair L Brown AC Wills TA Spoth RL Luo Z Chen YF Neubaum-Carlan E 《Child development》2004,75(3):900-917
A randomized prevention trial contrasted families who took part in the Strong African American Families Program (SAAF), a preventive intervention for rural African American mothers and their 11-year-olds, with control families. SAAF is based on a contextual model positing that regulated, communicative parenting causes changes in factors protecting youths from early alcohol use and sexual activity. Parenting variables included involvement-vigilance, racial socialization, communication about sex, and clear expectations for alcohol use. Youth protective factors included negative attitudes about early alcohol use and sexual activity, negative images of drinking youths, resistance efficacy, a goal-directed future orientation, and acceptance of parental influence. Intervention-induced changes in parenting mediated the effect of intervention group influences on changes in protective factors over a 7-month period. 相似文献
7.
8.
Marie C. Paretti Lisa D. McNair Lissa Holloway-Attaway 《Technical Communication Quarterly》2013,22(3):327-352
As distributed work begins to shift the nature of practice for technical communication professionals in the workplace, faculty need new frameworks to help prepare students for roles that involve negotiating, supporting, and facilitating virtual global collaboration. This paper identifies key areas of metaknowledge appropriate to these new frameworks by synthesizing a review of current scholarship on such collaborations and a case study of students participating in a cross-disciplinary, cross-cultural team project. 相似文献
9.
10.
Rodney E. McNair 《Educational Studies in Mathematics》2000,42(2):197-209
The quality of students' mathematics classroom discussions is an important factor in determining mathematics classroom learning
outcomes. Good mathematics classroom discussions provide an opportunity for ideas to be shared and developed, but not all
mathematics classroom discussions produce these learning opportunities. In this paper I discuss three constructs (subject,
purpose, and frame) and how they can be used to analyze and characterize the quality of students' mathematics classroom discussions
in terms of the mathematics learning potential that those discussions provide.
This revised version was published online in July 2006 with corrections to the Cover Date. 相似文献