scholarly journals Predictors of Attack Performance in High-Level Male Volleyball Players

2018 ◽  
Vol 13 (9) ◽  
pp. 1230-1236 ◽  
Author(s):  
Dimitrios Challoumas ◽  
Andreas Artemiou
Keyword(s):  
Vertical Jump ◽  
Volleyball Players ◽  
Negative Effect ◽  
History Of ◽  
History Of Pain ◽  
Positive Correlations ◽  
High Level ◽  
Relationship Of ◽  
The Relationship ◽  
Body Bone

Purpose: In volleyball, teams win the majority of points through attacks (spikes), and therefore attack effectiveness (AE) is one of the most important predictors of victory. Traditionally, greater vertical jump heights (VJH) and higher spike speeds (SS) have been thought to increase AE; however, relevant research is limited. The authors’ aim was to assess the relationship of VJH and SS with AE, as well as identifying possible associations of demographic and anthropometric factors, including common volleyball injuries, with VJH, SS, and AE. Methods: A total of 22 male volleyball players from 2 teams in the top division of the Cypriot championship were included in the study. VJH was measured with the jump-and-reach test, SS was tested with a sports speed radar, and AE was calculated from performance reports of 4 matches between the 2 teams. Results: Statistically significant results included positive correlations between VJH and SS, percentage lean mass and SS, body-bone percentage and SS, frequency of volleyball practice and SS, and frequency of resistance training and SS. AE was found to increase with increasing age, while SS over 90 km·h−1 appeared to have a negative effect on AE. History of pain in the dominant shoulder and in the ankles/knees was associated with lower SS and higher VJH, respectively. Conclusions: Based on the findings and the existing literature, volleyball players and coaches are advised to focus on maximization of VJH and optimization of attack technique; recommendations to improve attack success are provided.

Factors Correlated with Volleyball Spike Velocity

2005 ◽  
Vol 33 (10) ◽  
pp. 1513-1519 ◽  
Author(s):  
Bénédicte Forthomme ◽  
Jean-Louis Croisier ◽  
Guido Ciccarone ◽  
Jean-Michel Crielaard ◽  
Marc Cloes
Keyword(s):  
Strength Performance ◽  
Specific Strength ◽  
Volleyball Players ◽  
Ball Velocity ◽  
Elbow Flexors And Extensors ◽  
Positive Correlations ◽  
High Level ◽  
Physical Features ◽  
The Relationship ◽  
External Rotator

Background Spike effectiveness represents a determining element in volleyball. To compete at a high level, the player must, in particular, produce a spike characterized by a high ball velocity. Hypothesis Some muscular and physical features could influence ball velocity during the volleyball spike. Study Design Descriptive laboratory study. Methods A total of 19 male volleyball players from the 2 highest Belgian national divisions underwent an isokinetic assessment of the dominant shoulder and elbow. Ball velocity performance (radar gun) during a spike test, morphological feature, and jump capacity (ergo jump) of the player were measured. We tested the relationship between the isokinetic parameters or physical features and field performances represented by spike velocity. We also compared first-division and second-division player data. Results Spike velocity correlated significantly with strength performance of the dominant shoulder (internal rotators) and of the dominant elbow (flexors and extensors) in the concentric mode. Negative correlations were established with the concentric external rotator on internal rotator ratio at 400 deg/s and with the mixed ratio (external rotator at 60 deg/s in the eccentric mode on internal rotator at 240 deg/s in the concentric mode). Positive correlations appeared with both the volleyball players’ jump capacity and body mass index. First-division players differed from second-division players by higher ball velocity and increased jump capacity. Conclusion Some specific strength and physical characteristics correlated significantly with spike performance in high-level volleyball practice. Clinical Relevance Our results could provide useful information for training management and propose some reflections on injury prevention.

The relationship of the scleractinian corals to the rugose corals

Paleobiology ◽  
1980 ◽  
Vol 6 (02) ◽  
pp. 146-160 ◽  
Author(s):  
William A. Oliver
Keyword(s):  
Critical Points ◽  
Scleractinian Corals ◽  
Convincing Evidence ◽  
Early Triassic ◽  
Rugose Corals ◽  
History Of ◽  
The Subject ◽  
Relationship Of ◽  
The Relationship ◽  
Biologic Factors

The Mesozoic-Cenozoic coral Order Scleractinia has been suggested to have originated or evolved (1) by direct descent from the Paleozoic Order Rugosa or (2) by the development of a skeleton in members of one of the anemone groups that probably have existed throughout Phanerozoic time. In spite of much work on the subject, advocates of the direct descent hypothesis have failed to find convincing evidence of this relationship. Critical points are:(1) Rugosan septal insertion is serial; Scleractinian insertion is cyclic; no intermediate stages have been demonstrated. Apparent intermediates are Scleractinia having bilateral cyclic insertion or teratological Rugosa.(2) There is convincing evidence that the skeletons of many Rugosa were calcitic and none are known to be or to have been aragonitic. In contrast, the skeletons of all living Scleractinia are aragonitic and there is evidence that fossil Scleractinia were aragonitic also. The mineralogic difference is almost certainly due to intrinsic biologic factors.(3) No early Triassic corals of either group are known. This fact is not compelling (by itself) but is important in connection with points 1 and 2, because, given direct descent, both changes took place during this only stage in the history of the two groups in which there are no known corals.

Meat without Animals: Outcast Objects and the Improvement of London

2018 ◽  
Author(s):  
Ted Geier
Keyword(s):  
Animal Rights ◽  
Legal Reform ◽  
Meat Production ◽  
History Of ◽  
Relationship Of ◽  
The Relationship

Covers the long history of the Smithfield animal market and legal reform in London. Shows the relationship of civic improvement tropes, including animal rights, to animal erasure in the form of new foodstuffs from distant meat production sites. The reduction of lives to commodities also informed public abasement of the butchers.

From Competition to Cooperation: A History of Canada–US National Park Relations

2019 ◽  
Author(s):  
Terence Young ◽  
Alan MacEachern ◽  
Lary Dilsaver
Keyword(s):  
National Parks ◽  
National Park ◽  
The United States ◽  
The Us ◽  
Park Service ◽  
Settler Societies ◽  
History Of ◽  
Relationship Of ◽  
Flow Of Information ◽  
The Relationship

This essay explores the evolving international relationship of the two national park agencies that in 1968 began to offer joint training classes for protected-area managers from around the world. Within the British settler societies that dominated nineteenth century park-making, the United States’ National Park Service (NPS) and Canada’s National Parks Branch were the most closely linked and most frequently cooperative. Contrary to campfire myths and nationalist narratives, however, the relationship was not a one-way flow of information and motivation from the US to Canada. Indeed, the latter boasted a park bureaucracy before the NPS was established. The relationship of the two nations’ park leaders in the half century leading up to 1968 demonstrates the complexity of defining the influences on park management and its diffusion from one country to another.

Health and Medicine in the Islamic Tradition

1990 ◽  
Vol 7 (1) ◽  
pp. 89-90
Author(s):  
Dennis Michael Warren
Keyword(s):  
Health Care ◽  
Medical Care ◽  
Human Health ◽  
Well Being ◽  
Islamic Tradition ◽  
Medical Tradition ◽  
Islamic Thought ◽  
History Of ◽  
Relationship Of ◽  
The Relationship

The late Dr. Fazlur Rahman, Harold H. Swift Distinguished Service Professor of Islamic Thought at the Oriental Institute of the University of Chicago, has written this book as number seven in the series on Health/Medicine and the Faith Traditions. This series has been sponsored as an interfaith program by The Park Ridge Center, an Institute for the study of health, faith, and ethics. Professor Rahman has stated that his study is "an attempt to portray the relationship of Islam as a system of faith and as a tradition to human health and health care: What value does Islam attach to human well-being-spiritual, mental, and physical-and what inspiration has it given Muslims to realize that value?" (xiii). Although he makes it quite clear that he has not attempted to write a history of medicine in Islam, readers will find considerable depth in his treatment of the historical development of medicine under the influence of Islamic traditions. The book begins with a general historical introduction to Islam, meant primarily for readers with limited background and understanding of Islam. Following the introduction are six chapters devoted to the concepts of wellness and illness in Islamic thought, the religious valuation of medicine in Islam, an overview of Prophetic Medicine, Islamic approaches to medical care and medical ethics, and the relationship of the concepts of birth, contraception, abortion, sexuality, and death to well-being in Islamic culture. The basis for Dr. Rahman's study rests on the explication of the concepts of well-being, illness, suffering, and destiny in the Islamic worldview. He describes Islam as a system of faith with strong traditions linking that faith with concepts of human health and systems for providing health care. He explains the value which Islam attaches to human spiritual, mental, and physical well-being. Aspects of spiritual medicine in the Islamic tradition are explained. The dietary Jaws and other orthodox restrictions are described as part of Prophetic Medicine. The religious valuation of medicine based on the Hadith is compared and contrasted with that found in the scientific medical tradition. The history of institutionalized medical care in the Islamic World is traced to awqaf, pious endowments used to support health services, hospices, mosques, and educational institutions. Dr. Rahman then describes the ...

PIOPLE. INFORMATION. DEGRADATION

2019 ◽  
pp. 44-53
Author(s):  
Andrey Varlamov ◽  
Vladimir Rimshin
Keyword(s):  
Information Theory ◽  
Mathematical Theory ◽  
Maximum Information ◽  
Building Models ◽  
Man And Nature ◽  
History Of ◽  
Nature And Society ◽  
Relationship Of ◽  
Link Information ◽  
The Relationship

Considered the issues of interaction between man and nature. Noted that this interaction is fundamental in the existence of modern civilization. The question of possible impact on nature and society with the aim of preserving the existence of human civilization. It is shown that the study of this issue goes towards the crea-tion of models of interaction between nature and man. Determining when building models is information about the interaction of man and nature. Considered information theory from the viewpoint of interaction between nature and man. Noted that currently information theory developed mainly as a mathematical theory. The issues of interaction of man and nature, the availability and existence of information in the material sys-tem is not studied. Indicates the link information with the energy terms control large flows of energy. For con-sideration of the interaction of man and nature proposed to use the theory of degradation. Graphs are pre-sented of the information in the history of human development. Reviewed charts of population growth. As a prediction it is proposed to use the simplest based on the theory of degradation. Consideration of the behav-ior of these dependencies led to the conclusion about the existence of communication energy and information as a feature of the degradation of energy. It justifies the existence of border life ( including humanity) at the point with maximum information. Shows the relationship of energy and time using potential energy.

Police Records

2019 ◽  
pp. 797-819
Author(s):  
Cristina Vatulescu
Keyword(s):  
Nineteenth Century ◽  
Detective Fiction ◽  
Media History ◽  
Late Nineteenth Century ◽  
The Novel ◽  
Police Records ◽  
History Of ◽  
Late Nineteenth ◽  
Relationship Of ◽  
The Relationship

This chapter approaches police records as a genre that gains from being considered in its relationships with other genres of writing. In particular, we will follow its long-standing relationship to detective fiction, the novel, and biography. Going further, the chapter emphasizes the intermedia character of police records not just in our time but also throughout their existence, indeed from their very origins. This approach opens to a more inclusive media history of police files. We will start with an analysis of the seminal late nineteenth-century French manuals prescribing the writing of a police file, the famous Bertillon-method manuals. We will then track their influence following their adoption nationally and internationally, with particular attention to the politics of their adoption in the colonies. We will also touch briefly on the relationship of early policing to other disciplines, such as anthropology and statistics, before moving to a closer look at its intersections with photography and literature.

Anthropological communities of interpretation for Burma: An overview

2008 ◽  
Vol 39 (2) ◽  
pp. 239-254 ◽  
Author(s):  
U Chit Hlaing
Keyword(s):  
Southeast Asia ◽  
Ethnic Groups ◽  
Field Of Study ◽  
Anthropological Theory ◽  
History Of ◽  
Relationship Of ◽  
The Relationship ◽  
The Way

AbstractThis paper surveys the history of anthropological work on Burma, dealing both with Burman and other ethnic groups. It focuses upon the relations between anthropology and other disciplines, and upon the relationship of such work to the development of anthropological theory. It tries to show how anthropology has contributed to an overall understanding of Burma as a field of study and, conversely, how work on Burma has influenced the development of anthropology as a subject. It also tries to relate the way in which anthropology helps place Burma in the broader context of Southeast Asia.

scholarly journals ‘There Must Be a Poetry of Sound That None of Us Knows…’: Early British documentary film and the prefiguring of musique concrète

2017 ◽  
Vol 22 (2) ◽  
pp. 172-186
Author(s):  
Geoffrey Cox
Keyword(s):  
Case Studies ◽  
Electronic Music ◽  
Documentary Film ◽  
Post Office ◽  
Coal Face ◽  
Avant Garde ◽  
History Of ◽  
Relationship Of ◽  
The Relationship ◽  
Musique Concrete

Standard histories of electronic music tend to trace the lineage of musique concrète as lying mainly in the Futurists’ declarations of the 1910s, through Cage’s ‘emancipation’ of noise in the 1930s, to Schaeffer’s work and codifications of the late 1940s and early 1950s. This article challenges this narrative by drawing attention to the work of filmmakers in the 1930s that foreshadowed the sound experiments of Pierre Schaeffer and thus offers an alternative history of their background. The main focus of the article is on the innovations within documentary film and specifically the sonic explorations in early British documentary that prefigured musique concrète, an area ignored by electronic music studies. The theoretical and philosophical underpinnings of the documentary movement’s members, particularly their leader John Grierson, will be compared with those of Pierre Schaeffer, and the important influence of Russian avant-garde filmmaking on the British (and musique concrète) will be addressed. Case studies will focus on the groundbreaking soundtracks of two films made by the General Post Office Film Unit that feature both practical and theoretical correspondences to Schaeffer: 6.30 Collection (1934) and Coal Face (1935). Parallels between the nature and use of technologies and how this affected creative outputs will also be discussed, as will the relationship of the British documentary movement’s practice and ideas to post-Schaefferian ‘anecdotal music’ and the work of Luc Ferrari.

Characterizing response quantity on academic social Q&A sites: a multidiscipline comparison of linguistic characteristics of questions

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Lei Li ◽  
Anrunze Li ◽  
Xue Song ◽  
Xinran Li ◽  
Kun Huang ◽  
...  
Keyword(s):  
Information Needs ◽  
Function Words ◽  
Second Person ◽  
Content Type ◽  
Five Disciplines ◽  
Negative Effect ◽  
Academic Communication ◽  
High Level ◽  
The Impact ◽  
The Relationship

PurposeAs academic social Q&A networking websites become more popular, scholars are increasingly using them to meet their information needs by asking academic questions. However, compared with other types of social media, scholars are less active on these sites, resulting in a lower response quantity for some questions. This paper explores the factors that help explain how to ask questions that generate more responses and examines the impact of different disciplines on response quantity.Design/methodology/approachThe study examines 1,968 questions in five disciplines on the academic social Q&A platform ResearchGate Q&A and explores how the linguistic characteristics of these questions affect the number of responses. It uses a range of methods to statistically analyze the relationship between these linguistic characteristics and the number of responses, and conducts comparisons between disciplines.FindingsThe findings indicate that some linguistic characteristics, such as sadness, positive emotion and second-person pronouns, have a positive effect on response quantity; conversely, a high level of function words and first-person pronouns has a negative effect. However, the impacts of these linguistic characteristics vary across disciplines.Originality/valueThis study provides support for academic social Q&A platforms to assist scholars in asking richer questions that are likely to generate more answers across disciplines, thereby promoting improved academic communication among scholars.

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