Perception of kinematic characteristics of tennis strokes for anticipating stroke type and direction     

Shim J  Les Carlton G  Kwon YH 《Research quarterly for exercise and sport》2006,77(3):326-339

The purpose of this study was to determine the sources of visual information used by highly skilled tennis players in anticipating their opponent's shots. In Experiment 1, motion analysis of the strokes showed that the relative motion between the racquet and forearm was different between the ground strokes and lobs, but there were no reliable kinematic differences when shot direction was varied. In Experiment 2, 12 skilled tennis players observed the opponent hitting strokes in a normal video or in a point-light display with different segments occluded. Players' anticipation accuracy was not degraded by the use of the point-light display. Occluding the racquet and forearm significantly reduced the participant's ability to determine the type of stroke produced.  相似文献   

Acknowledgments     

C. Schwartz 《Library & information science research》2002,24(4)

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Wimbledon Results Re-analysed     

K. G. Pangarkar  R. M. Welukar 《Teaching Statistics》1990,12(2):53-54

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Die Lehrkräfte von morgen     

Stefan Denzler-Schircks  Ursula Fiechter  Stefan C. Wolter 《Zeitschrift für Erziehungswissenschaft》2005,8(4):576-594

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浅析高师体育生能力的培养     

彭鹰  胡安义 《湖北体育科技》2001,20(2):117-117,119

高师体育生能力的高低，直接关系到高师体育院系的教育质量和培养规格。从知识与能力的关系、专业思想的树立等方而阐述了高师体育生能力培养的方法和途径。  相似文献   

Investigation of Poor Academic Achievement in Children with Duchenne Muscular Dystrophy     

V. J. Hinton  D. C. De Vivo  R. Fee  E. Goldstein  Y. Stern 《Learning disabilities research & practice》2004,19(3):146-154

Duchenne Muscular Dystrophy (DMD) is a neurogenetic developmental disorder that presents with progressive muscular weakness. It is caused by a mutation in a gene that results in the absence of specific products that normally localize to muscle cells and the central nervous system (CNS). The majority of affected individuals have IQs within the normal range, generally with lower verbal than performance IQ scores. Prior work has demonstrated selective deficits on tests of verbal span and immediate memory. For the current study, 26 boys with DMD (and normal intellectual function) and their unaffected siblings were evaluated. Paired comparisons demonstrated that the children with DMD had significantly poorer academic achievement scores than their siblings, even though their vocabulary levels and home and educational environments were comparable. Children with DMD also had more behavioral concerns, physical disabilities, and poorer verbal memory spans. Linear regression indicated that behavioral concerns, executive function, and physical disability did not contribute substantially to academic performance, whereas performance on verbal span did. DMD presents with a selective developmental aberration in verbal span that has wide‐ranging consequences on learning skills.  相似文献   

A Progressive Legacy Squandered: The Cardinal Principles Report Reconsidered   总被引：1，自引：0，他引：1  

William G. Wraga 《History of education quarterly》2001,41(4):494-519

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Editorial     

C. S. Yogananda 《Resonance》2001,6(9):1-2

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Gardening as a cognitive activity     

Deborah G. Ventis 《Early Childhood Education Journal》1992,19(3):32-34

Gardening and children are a natural combination; children love to play in the dirt, and are fascinated by growing things. The benefits of having a garden can go beyond the fresh vegetables and flowers, a lot can be learned in the process. Although skills involved in planting and caring for the garden and acquiring a rudimentary knowledge of biology are obvious benefits, many other cognitive skills can be introduced or reinforced with a garden project.Deborah G. Ventis is Associate Professor of Psychology, College of William and Mary, Williamsburgh, VA.  相似文献   

Unresolved Mysteries: The Myth of the Missing Warrior and the Government Deceit Theme in the Popular Captivity Culture of the Vietnam War     

Robert C. Doyle 《Journal of American culture (Malden, Mass. : 2003)》1992,15(2):1-18

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