Changes in kinematics and arm–leg coordination during a 100-m breaststroke swim     

Samuel W. Oxford  Rob S. James  Michael J. Price  Carl J. Payton  Michael J. Duncan 《Journal of sports sciences》2017,35(16):1658-1665

The purpose of this study was to compare arm–leg coordination and kinematics during 100 m breaststroke in 26 (8 female; 18 male) specialist breaststroke swimmers. Laps were recorded using three 50-Hz underwater cameras. Heart rate and blood lactate were measured pre- and post-swim. Arm–leg coordination was defined using coordination phases describing continuity between recovery and propulsive phases of upper and lower limbs: coordination phase 1 (time between end of leg kick and start of the arm pull phases); and coordination phase 2 (time between end of arm pull and start of leg kick phases). Duration of stroke phases, coordination phases, swim velocity, stroke length (SL), stroke rate (SR) and stroke index (SI) were analysed during the last three strokes of each lap that were unaffected by turning or finishing. Significant changes in velocity, SI and SL (P < 0.05) were found between laps. Both sexes showed significant increase (P < 0.05) in heart rate and blood lactate pre- to post-swim. Males had significantly (P < 0.01) faster swim velocities resulting from longer SLs (P = 0.016) with no difference in SR (P = 0.064). Sex differences in kinematic parameters can be explained by anthropometric differences providing males with increased propelling efficiency.  相似文献   

Change management and the SENCo role: developing key performance indicators in the strategic development of inclusivity     

Liz Done  Mike Murphy  Mia Watt 《Support for Learning》2016,31(4):281-295

This article follows an earlier publication highlighting the changing role of special educational needs co‐ordinators (SENCos) in England. SENCos are now required to manage change strategically and deliver inclusive school cultures. School‐based action research undertaken by a teacher studying for the postgraduate National Award for SEN Co‐ordination (NASENCO) is featured in the article; a strategic review of resource allocation increased the availability and quality of interventions for students with special educational needs and disabilities (SEND). The commentary which frames the study acknowledges that many SENCos are not yet members of a senior school management team (SMT) despite their mandated strategic whole‐school remit. Featuring the process through which one SENCo has strived to enhance SEND provision and develop context‐specific key performance indicators brings official guidance on the SENCo's role in strategic change management into sharp focus, raising questions that should concern both SMTs and non‐SMT SENCos.  相似文献   

The use of player physical and technical skill match activity profiles to predict position in the Australian Football League draft     

Carl T. Woods  James P. Veale  Neil Collier  Sam Robertson 《Journal of sports sciences》2017,35(4):325-330

This study investigated the extent to which position in the Australian Football League (AFL) national draft is associated with individual game performance metrics. Physical/technical skill performance metrics were collated from all participants in the 2014 national under 18 (U18) championships (18 games) drafted into the AFL (n = 65; 17.8 ± 0.5 y); 232 observations. Players were subdivided into draft position (ranked 1–65) and then draft round (1–4). Here, earlier draft selection (i.e., closer to 1) reflects a more desirable player. Microtechnology and a commercial provider facilitated the quantification of individual game performance metrics (n = 16). Linear mixed models were fitted to data, modelling the extent to which draft position was associated with these metrics. Draft position in the first/second round was negatively associated with “contested possessions” and “contested marks”, respectively. Physical performance metrics were positively associated with draft position in these rounds. Correlations weakened for the third/fourth rounds. Contested possessions/marks were associated with an earlier draft selection. Physical performance metrics were associated with a later draft selection. Recruiters change the type of U18 player they draft as the selection pool reduces. juniors with contested skill appear prioritised.  相似文献   

The professional preparation of Indiana's intermediate school teachers     

James R. Stainbrook Jr. 《The Teacher Educator》2013,48(1):7-11

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The internal consistency of a concept mapping scoring scheme and its effect on prediction validity     

Xiufeng Liu  Mike Hinchey 《International Journal of Science Education》2013,35(8):921-937

This study examines the internal consistency of Novak and Gowin's scoring scheme and its effect on the prediction validity of concept mapping as an alternative science classroom achievement assessment. Data were collected in three typical situations: very limited concept mapping experience with free‐style concept mapping; some concept mapping experience with questions provided; extensive concept mapping experience with a list of concepts provided for. It was found that Novak's scoring scheme was not internally consistent, and therefore there was generally no significant correlation between students’ scores on concept mapping and students’ scores on conventional classroom achievement assessments. The need for a new scoring scheme when concept mapping is used as an alternative science assessment is discussed.  相似文献   

Television: The performance of nonresident students in the “economics U$A” telecourse     

Paul W. Grimes  Joyce E. Nielsen  James F. Niss 《The American journal of distance education》2013,27(2):36-43

Abstract

Correspondence study represents the first and most persistent distance education format in American universities. Later called independent study, it enabled universities to disseminate instruction far beyond their campuses. Yet, national‐level leadership provided by the National University Continuing Education Association (NUEA) and its divisions has been relatively restrained. In contrast, leadership in the private correspondence school sector has been assertive, and sometimes even aggressive. The NUEA and its members shunned this approach, choosing instead to lead by persuasion and example. The NUEA developed standards of practice concerned primarily with replicating on‐campus teaching styles and values, rather than the promotion of distance education. With the abolition of its division structure, the NUEA's successor, the University Continuing Education Association (UCEA), has opted out of a leadership role in independent study. This paper concludes that the NUEA's initial attempt at leadership in distance education— while reasoned and principled—contained flaws that made failure inevitable.  相似文献   

SCHOOL INTEGRATION and related topics     

James G. Haughton M.D. 《Equity & Excellence in Education》2013,46(3):54-55

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Letters     

James H. Borland Ph.D  Willard L. White Ph.D.  Joseph S. Renzulli Ed.D. 《Roeper Review》2013,35(4)

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A Review of “Sustainable Value: How the World’s Leading Companies are Doing Well by Doing Good”     

Sylvia James 《Journal of Business & Finance Librarianship》2013,18(1):74-76

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Yestermorrow,Notes on Man's Progress,by Kurt W. Marek (pen name C. W. Ceram), translated from the German by Ralph Manheim,New York: Alfred A. Knopf. 1961. 151 pp. $3.50     

James W. Russell 《The Educational forum》2013,77(1)

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