Postural stability,clicker reaction time and bow draw force predict performance in elite recurve archery     

Wayne Spratford  Rhiannon Campbell 《European Journal of Sport Science》2017,17(5):539-545

Recurve archery is an Olympic sport that requires extreme precision, upper body strength and endurance. The purpose of this research was to quantify how postural stability variables both pre- and post-arrow release, draw force, flight time, arrow length and clicker reaction time, collectively, impacted on the performance or scoring outcomes in elite recurve archery athletes. Thirty-nine elite-level recurve archers (23 male and 16 female; mean age?=?24.7?±?7.3 years) from four different countries volunteered to participate in this study prior to competing at a World Cup event. An AMTI force platform (1000Hz) was used to obtain centre of pressure (COP) measurements 1s prior to arrow release and 0.5s post-arrow release. High-speed footage (200Hz) allowed for calculation of arrow flight time and score. Results identified clicker reaction time, draw force and maximum sway speed as the variables that best predicted shot performance. Specifically, reduced clicker reaction time, greater bow draw force and reduced postural sway speed post-arrow release were predictors of higher scoring shots. It is suggested that future research should focus on investigating shoulder muscle tremors at full draw in relation to clicker reaction time, and the effect of upper body strength interventions (specifically targeting the musculature around the shoulder girdle) on performance in recurve archers.  相似文献   

Paul Roberts' rules of order: The misuses of linguistics in the classroom     

Wayne A. O'Neil 《The Urban Review》1968,2(7):12-16

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Further confirmation of the Montgomery theory of counter discharge     

W.E. Ramsey  Wayne L. Lees 《Journal of The Franklin Institute》1942,233(1):85-87

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Photoelectric and thermionic emission from composite surfaces     

Wayne B. Nottingham 《Journal of The Franklin Institute》1932,214(5):605-606

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Book reviews     

Tom Schwen  Wayne Wolfe 《Performance Improvement》1981,20(1):40-40

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How to grow people into self-starters by Thomas K. Connellan. The Achievement Institute,Inc., 3125 Geddes Avenue,Ann Arbor Michigan, 48104, 1980, pp. 205. $19.95     

Tom Schwen  Wayne Wolfe 《Performance Improvement》1981,20(2):42-42

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Feasibility of test administration and preliminary findings for cognitive control in the Burn 2 learn pilot randomised controlled trial     

Angus A. Leahy  Madieke F.I. Michels  Narelle Eather  Charles H. Hillman  Tatsuya T. Shigeta  David R. Lubans 《Journal of sports sciences》2020,38(15):1708-1716

ABSTRACT

The feasibility requirements of administering field-based cognitive assessments are rarely reported. We examined the feasibility of administering a group-based cognitive test battery in a school setting with older adolescents. Several types of reliability were also assessed in the control group. Preliminary efficacy and the relationship between changes in fitness and changes in cognitive control were also explored following a 14-week HIIT intervention (3 sessions/week). Participants completed a cognitive test battery measuring inhibition (flanker), and working memory (n-back) at baseline and post-test. Health-related fitness assessments were also conducted. Test administration took approximately 30.8 ± 1.5 minutes to complete with up to six participants simultaneously. The test battery demonstrated acceptable reliability (ICC = 0.5–0.81), with significant changes observed for flanker incongruent accuracy, and 2-back non-target accuracy from baseline to post-test. Regarding efficacy, small-to-moderate effects were observed for accuracy outcomes, while several small associations were found between changes in fitness and changes in cognition. Findings from the current study suggest a cognitive test battery can be administered with older adolescents in a school setting. However, there remains a lack of adequate reporting of administration requirements for field-based cognitive assessments. Efficacy findings should be confirmed with a larger and more representative sample of older adolescents.  相似文献   

Using Academic Journals to Help Students Learn Subject Matter Content, Develop and Practice Critical Reasoning Skills, and Reflect on Personal Values in Food Science and Human Nutrition Classes     

Wayne T. Iwaoka  Lea M. Crosetti 《Journal of Food Science Education》2008,7(2):19-29

ABSTRACT:  It has been reported that students learn best when they use a wide variety of techniques to understand the information of the discipline, be it visual, auditory, discussion with others, metacognition, hands-on activities, or writing about the subject. We report in this article the use of academic journals not only as an aid for students to learn about content knowledge needed in an Experimental Foods course, but also as a way to have students think about and reflect on their own personal values. The topics of these journal entries cover several of the core competencies in the Institute of Food Technologists (IFT) Undergraduate Education Standards for Degrees in Food Science. These are basic principles of food science, as well as address several "Success Skills" (written communication, critical thinking, professionalism, life-long learning, interaction skills, and organizational skills). While there are no quantitative "measurements" of gains in learning, comments from the students indicate that learning took place, critical reasoning occurred, and personal values were analyzed. A guideline for writing and grading academic journals and a simple rubric for scoring the quality of the writing are included.  相似文献   

An Interdisciplinary Approach to social Foundations     

Wayne J. urban 《Teaching Education》2013,24(1):50-53

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The Connecting Thread     

Wayne R. Chapin 《College Teaching》2013,61(1):50-51

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