The effects of opposition and gender on knee kinematics and ground reaction force during landing from volleyball block jumps   总被引：1，自引：0，他引：1  

Hughes G  Watkins J  Owen N 《Research quarterly for exercise and sport》2010,81(4):384-391

The aim of this study was to examine the effect of opposition and gender on knee kinematics and ground reaction force during landing from a volleyball block jump. Six female and six male university volleyball players performed two landing tasks: (a) an unopposed and (b) an opposed volleyball block jump and landing. A 12-camera motion analysis system (120 Hz) was used to record knee kinematics, and a force platform (600 Hz) was used to record ground reaction force during landing. The results showed a significant effect for level of opposition in peak normalized ground reaction force (p = .04), knee flexion at ground contact (p = .003), maximum knee flexion (p = .001), and knee flexion range of motion (p = .003). There was a significant effect for gender in maximum knee flexion (p = .01), knee flexion range of motion (p = .001), maximum knee valgus angle (p = .001), and knee valgus range of motion (p = .001). The changes in landing biomechanics as a result of opposition suggest future research on landing mechanics should examine opposed exercises, because opposition may significantly alter neuromuscular responses.  相似文献   

Sedentary Behavior and Health: Broadening the Knowledge Base and Strengthening the Science     

Nyssa Hadgraft  Neville Owen 《Research quarterly for exercise and sport》2017,88(2):123-129

We provide an overview of a recently published, edited book in a rapidly emerging field of research, policy, and practice for physical activity: Sedentary Behavior and Health. In this commentary, we highlight the broad perspectives provided in the 27 chapters of Sedentary Behavior and Health and suggest a research strategy to move the field forward—not only with scientific rigor, but also with breadth of scholarship. The book’s chapters provide an overview of the background to and contexts for sedentary behavior and health. They then highlight the importance of understanding health consequences and underlying mechanisms; introduce key measurement technology and analytic strategies; consider sedentary behavior in subpopulations; describe conceptual models and theories to guide sedentary behavior interventions; and explain what is known about interventions in different settings. Considering the breadth of perspectives brought to bear on the field and the plethora of opportunities for research, policy, and practice, we suggest 3 elements of an interdisciplinary research strategy drawing upon the primary knowledge bases of physical activity and health: through the experimental methods of exercise science, through the observational tools of epidemiology, and through the conceptual approaches and methods of behavioral science. A better understanding of the health consequences of sedentary behavior and how they may be influenced can be encompassed by 3 key questions: What changes are needed to most effectively influence sedentary behaviors? What elements of sedentary behavior should be changed to improve health outcomes? What are the feasibility of and the benefits from changing sedentary behavior?  相似文献   

Schooling for self-employment in Kenya: The acquisition of craft skills in and outside schools     

Thomas Owen Eisemon  Elkana Ong'esa  Lynn Hart 《International Journal of Educational Development》1988,8(4)

Primary schooling will continue to be the terminal stage of education for most Kenyan children, and it will have to prepare them for employment that they will create for themselves. What this might imply for the teaching of craft skills is examined. Soapstone carving was selected as the subject of study because it is an important form of self-employment in western Kenya. The acquisition of craft skills in and outside schools was compared using observational and experimental methods. It is argued that school instruction provides little opportunity to develop competence in carrying out cognitive and psychomotor tasks important to expert performance in this and perhaps many other craft occupations.  相似文献   

The Summer of Friendship by Fire: A Doctoral Student Reminisces about Lessons in Diversity     

Jane C. Owen 《Multicultural Perspectives》2013,15(3):60-63

The journey toward becoming a multicultural person is not easy and is never finished. As an educational administrator in a tri-cultural state, I felt comfortable that I was proficient in dealing with diversity. Only when I began a doctoral program at a major Texas university was my naivety exposed. I quickly learned that experience in working with diverse populations and the ability to relate effectively to people of different ethnic backgrounds were vastly different. The two years I spent deeply immersed in a multiculturally rich cohort of doctoral students changed me. My eyes were opened to injustices that I had never before seen as I vicariously experienced life through the eyes of the “other.” Today, I am a professor at a regional university. My experiences, focused through the lens of theory, are the basis for the message to my students. I have traveled the road before and can now point the way toward a broader definition of acceptance and tolerance.  相似文献   

The locus of focus: the effect of switching from a preferred to a non-preferred focus of attention     

Weiss SM  Reber AS  Owen DR 《Journal of sports sciences》2008,26(10):1049-1057

Focusing strategies are known to play a significant role in motor performance, with individuals who use an internal focus on body movement typically showing poorer outcomes than those who focus on features of the external environment. Focus of attention and switching of one's focus are examined in the context of two different complex motor skills along with a factor not previously examined systematically, individual preference. In both experiments, participants were introduced to focusing strategies that might be employed when attempting a sensorimotor task. Explanations of both strategies were given to participants. Specifically, for an internal focus, participants were instructed to concentrate on their body movements, while for an external focus, they were instructed to focus on aspects in the environment. They were then asked which strategy they preferred. Participants then continued either with their preferred focus or were instructed to switch to their non-preferred focus. The advantage that the external focus typically enjoys turns out not to be a simple one and interacts with individual preference and with the "forced-opposite" manipulation. Our results support the growing consensus that encouraging individuals to adopt an internal focusing strategy is counterproductive in complex sensorimotor tasks. They also suggest that individual preferences play a role.  相似文献   

Private initiatives in higher education in Kenya   总被引：2，自引：0，他引：2  

Thomas Owen Eisemon 《Higher Education》1992,24(2):157-175

Africa's higher education crisis has prompted the growth of private institutions. Enrollments are very low and in most African countries do not account for a significant proportion of university enrollments. The largest number of private institutions are in Kenya which is the subject of a case study. Private institutions provide professional training in fields of employment opportunity but also offer an education that emphasizes character building functions of higher studies. Private higher education is expensive to provide and costly to attend. Many private institutions are caught in a dilemma. They can not achieve significant efficiencies by reducing instructional costs without damage to the quality of their programs, and they are reluctant to raise tuition and accommodation charges because of the distorting effects on student recruitment. As long as public higher education is provided at low or no cost and private higher education is entirely self-supporting, the private sector will have a peripheral role in higher education in Kenya and other African countries.  相似文献   

Marriage, adult adjustment, and early parenting   总被引：3，自引：0，他引：3  

M J Cox  M T Owen  J M Lewis  V K Henderson 《Child development》1989,60(5):1015-1024

The impact of parents' marriages, measured prenatally, on their parenting of firstborn, 3-month-old infants was assessed. Though the association between marriage and parenting was the focus, adult psychological adjustment was measured also to rule out the alternative hypothesis that psychological adjustment relates to both marital quality and parenting quality and accounts for any association between them. Hierarchical multiple regression analyses in which parental adjustment was entered first as a covariate were used to test the relation between close/confiding marriages and parenting of 3-month-old infants. From the findings, it was concluded that even when differences in individual psychological adjustment are taken into account, mothers are warmer and more sensitive with their infants and fathers hold more positive attitudes toward their infants and their roles as parents when they are in close/confiding marriages. It is asserted that qualities of marriage play an important part in the development of parent-child relationships.  相似文献   

Learners’ and Educators’ Perceptions of Gang Involvement in Western Cape     

Rienie Venter  Victor Jeffries 《Africa Education Review》2020,17(1):51-65

Abstract

The aim of this article is to discuss the dynamics of gang involvement by considering the social reproduction perspective and resistance theory literature and by examining general perceptions of learners and adults who regularly experience gang violence. In a study utilising quantitative and qualitative design, a questionnaire was administered to 360 Grade 6 learners in low socio-economic areas in Western Cape, South Africa. Interviews with educators and two experts in the field of gang involvement were conducted. In contrast with the current trend in literature, the participants made no distinction between gangs as marginalised individuals and gangs as deviant subcultures. This may be ascribed to the current high prevalence of violence which is associated with gangs in Western Cape. It was found that, while learners express their fear of gangs, some identify with and idealise gang life.  相似文献   

Growth in Externalizing and Internalizing Problems in Childhood: A Prospective Study of Psychopathology Across Three Generations     

Deborah M. Capaldi  Katherine C. Pears  David C. R. Kerr  Lee D. Owen  Hyoun K. Kim 《Child development》2012,83(6):1945-1959

Three generations of participants were assessed over approximately 27 years, and intergenerational prediction models of growth in the third generation’s (G3) externalizing and internalizing problems across ages 3–9 years were examined. The sample included 103 fathers and mothers (G2), at least 1 parent (G1) for all of the G2 fathers (99 mothers, 72 fathers), and 185 G3 offspring (83 boys, 102 girls) of G2, with prospective data available on the G2 fathers beginning at age 9 years. Behavior of the G2 mother, along with father contact and mother age at birth were included in the models. Intergenerational associations in psychopathology were modest, and much of the transmission occurred via contextual risk within the family of procreation.  相似文献   

The Cultural Bond? Cricket and the Imperial Mission     

Owen Mann 《国际体育史杂志》2013,30(13):2187-2211

The Cultural Bond? Cricket and the Imperial Mission

Cricket tours provide an excellent insight into the relationship between the colonies and England during the Imperial era. New Zealand has never had much of a cricketing legacy, but the game was still cherished and English tours were enthusiastically followed because they provided a link with ‘home'. Two English cricket teams visited New Zealand in the Edwardian age, the Lord Hawke XI in 1902-03 and the MCC in 1906–07. These tours were intended to be a panacea for a struggling local game while providing an extension of the cultural bonds of Empire. Both tours were rich in Imperial code and ceremony but their impact was lost in translation. The Lord Hawke XI, although all conquering, failed to win the hearts and minds of the New Zealand public because of a series of on-field moments of poor sportsmanship, and the public response to the treatment of the professionals in the team. The MCC team provided a fair challenge to New Zealand team, but lacked the star appeal of the Lord Hawke team, leaving the public somewhat underwhelmed. Both tours exemplify the difficulty in balancing the ideals inherent in the game with the realities of colonial sporting expectation.

Le lien culturel ? Le cricket et la mission impériale

Les tournées de cricket donnent un excellent aperçu des relations entre les colonies et l'Angleterre pendant l'ère Impériale. La Nouvelle-Zélande n'a jamais vraiment eu d'héritage en cricket, mais le jeu était aimé et les tournées de l'Angleterre étaient suivies avec enthousiasme parce qu'elles fournissaient un lien avec la ‘maison’. Deux équipes de cricket anglaises ont visité la Nouvelle-Zélande dans la période Edwardienne, The Lord Hawke XI en 1902-3 et le MCC en 1906-7. Ces tournées étaient destinées àêtre une panacée pour un jeu local combattif en fournissant une extension des liens culturels de l'Empire. Les deux tournées furent riches en signes et cérémonies impériaux mais leur impact fur perdu dans la traduction. The Lord Hawke XI, bien que remportant tout, a échouéà gagner les c?urs et l'esprit du public de Nouvelle-Zélande en raison de leur faible sportivité dans une série d'événements sur le terrain et de la réponse publique au traitement des professionnels dans l'équipe. L'équipe MCC a opposé un défi honnête à l'équipe de Nouvelle-Zélande, mais n'a pas été aussi attractive que celle du Lord Hawke XI, sans parvenir vraiment à combler le public. Les deux tournées illustrent la difficultéàéquilibrer les idéaux inhérents au jeu et les réalités des attentes coloniales.

¿Un vínculo cultural? El críquet y la misión imperial

Las giras de críquet proporcionan una visión excelente de la relación entre Inglaterra y las colonias durante la época imperial. Nueva Zelanda nunca ha gozado de una gran tradición criquetera, pero el juego era apreciado y las giras de equipos ingleses tenían un seguimiento entusiasta, ya que proporcionaban un vínculo con ‘la madre patria’. Dos equipos de críquet ingleses visitaron Nueva Zelanda en la época eduardiana, el Lord Hawke XI en 1902-03 y el MCC en 1906-07. Se pretendía que estas giras fueran una panacea para el débil críquet local, al tiempo que supusieran un refuerzo de los lazos culturales con el Imperio. Ambas giras estuvieron preñadas de ritual y ceremonia imperial, pero su impacto quedó mitigado por problemas de comunicación intercultural. El Lord Hawke XI, aunque lo ganó todo, no pudo conquistar los corazones y las mentes del público neozelandés a causa de una serie de episodios antideportivos en el campo, y de la respuesta del público al tratamiento de los profesionales en el equipo. El MCC supuso un reto limpio para el equipo de Nueva Zelanda, pero carecía del atractivo estelar del Lord Hawke, lo que dejó al público más bien frío. Ambas giras ejemplifican la dificultad a la hora de hallar un equilibrio entre los ideales propios del juego y las realidades del deporte colonial.

Kulturelle Bindung? Kricket und die imperiale Mission

Kricket-Reisen eröffnen einen exzellenten Einblick in die Beziehung zwischen England und dessen Kolonien in der Ära des Imperialismus. Neuseeland hatte nie ein umfassendes Kricket-Erbe gehabt, trotzdem wurde das Spiel stets geschätzt und Besuche aus England fanden großen Anklang, da sie eine Verbindung zur ‘Heimat’ darstellten. Im edwardianischen Zeitalter bereisten zwei englische Kricketmannschaften Neuseeland; zum einen die Lord Hawke-Elf im Jahre 1902/03, zum anderen der Marylebone Cricket Club 1906/07. Diese Touren sollten ein Allheilmittel für die hiesigen Probleme des Spiels sein, indem sie eine Erweiterung der kulturellen Verbindung des Empires herstellten. Beide Touren waren durch ausdrucksstarke, imperiale Sprache und Zeremonien gekennzeichnet, deren Bedeutung aber nicht verstanden wurde. Obwohl sie alle Spiele gewann, schaffte es die Lord Hawke-Elf nicht, die Herzen und den Geist der neuseeländischen Öffentlichkeit für sich zu gewinnen, was mit einer Reihe von Unsportlichkeiten auf dem Feld und den öffentlichen Reaktionen in Bezug auf die Behandlung von Profisportlern im Team zusammenhing. Die Mannschaft des Marylebone Cricket Club stellte für das neuseeländische Team eine ansprechende Herausforderung dar, ihr fehlten jedoch die Stars, über die das Lord Hawke-Team verfügte, weshalb das Publikum weitgehend unbeeindruckt blieb. Beide Reisen verdeutlichen die Schwierigkeit, die inhärenten Ideale des Spiels mit den Realitäten der Erwartungshaltung im Kolonialsport übereinzubringen.

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