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651.
Daniel J. West Mark Russell Richard M. Bracken Christian J. Cook Tibault Giroud Liam P. Kilduff 《Journal of sports sciences》2016,34(2):110-115
We compared the effects of using passive-heat maintenance, explosive activity or a combination of both strategies during the post-warmup recovery time on physical performance. After a standardised warmup, 16 professional rugby union players, in a randomised design, completed a counter-movement jump (peak power output) before resting for 20 min and wearing normal-training attire (CON), wearing a passive heat maintenance (PHM) jacket, wearing normal attire and performing 3 × 5 CMJ (with a 20% body mass load) after 12 min of recovery (neuromuscular function, NMF), or combining PHM and NMF (COMB). After 20 min, participants completed further counter-movement jump and a repeated sprint protocol. Core temperature (Tcore) was measured at baseline, post-warmup and post-20 min. After 20 min of recovery, Tcore was significantly lower under CON and NMF, when compared with both PHM and COMB (P < 0.05); PHM and COMB were similar. Peak power output had declined from post-warmup under all conditions (P < 0.001); however, the drop was less in COMB versus all other conditions (P < 0.05). Repeated sprint performance was significantly better under COMB when compared to all other conditions. Combining PHM with NMF priming attenuates the post-warmup decline in Tcore and can positively influence physical performance in professional rugby union players. 相似文献
652.
Christian Rullang Freya Gassmann Eike Emrich Christian Pierdzioch 《Sportwissenschaft》2016,46(3):232-240
In recent years unfair competition and match fixing have become an increasing focus of public attention. Uncovered instances of match fixing influence the integrity of football. In the field of professional football there are well-known cases, such as the Calciopoli scandal in Italy and the case of the German referee Robert Hoyzer, where referees were involved in match fixing. However, so far little is known about how often attempts are made to influence referees and their decisions in amateur football in Germany. Data from a large scale survey of referees (n = 4813) showed that approximately 10?% of referees in amateur football have already been approached in an attempt to influence their decisions by offers of money or non-cash benefits. Results of logistic regressions show various correlats of being approached for match fixing by offers of money or non-cash benefits. The probability of being approached increases with the duration of referee activity, the number of games refereed per year, and decreases with age. 相似文献
653.
The international classification of functioning, disability and health (ICF) is a concept developed for the healthcare sector by the World Health Organization, which considers the health problems of a person with respect to functional ability, impairments and context factors. Mobility is an important basic functional element, central health criterion and an important prerequisite for participation in social life. In addition to all routinely relevant daily movements (e.g. walking, lifting and carrying), activities at the workplace and sport-related activities are also taken into consideration. Because mobility is internationally established as a central criterion of health by the World Health Organization, this results in a series of interesting connecting factors from sport scientific and kinesthesiological perspectives: movement is the central object of kinesthesiology and exercise therapy. Mobility is of exceptional importance for human existence and dealing with the world at large. Analogous to the discussion on basic motor competences with respect to compatibility in educational sciences, utilization of the ICF can be the basis for a common language in the medical-therapeutic milieu. The orientation to mobility allows the targets, contents and methods of exercise therapy to be addressed for the context-related importance in individual cases. This article presents possible perspectives for sport scientific disciplines, sport and exercise therapy with respect to mobility. The importance of mobility for health is emphasized and the relevance is discussed based on the development of diagnostic procedures and application of therapy. 相似文献
654.
655.
Christian Ungruhe 《国际体育史杂志》2016,33(15):1767-1785
AbstractSo far, academic contributions have widely framed football in Africa as a means for migration from a western point of view. At a time, they presented particular and one-dimensional understandings of transnational links in the realm of football migration between Africa and Europe. Macro-level perspectives which mostly focus on African exploitation and dependency and more recently those that take the players’ agency into account reproduce a Eurocentric view of the phenomenon, while disregarding its local perceptions in African settings. Thus, despite the recent shift from a macro- to a micro-level perspective there is still an analytical gap between the ambitions and experiences of migrating players and economic power relations at play on the one hand and the socio-cultural embedding of the transnational connections in football migration on the other. In order to understand why and how football mobilities are indeed linked to ‘the transnational’ in migration there is a need to localize the phenomenon and investigate how local understandings of migration and mobility are lived and expressed in a transnational sport like football. By taking data from fieldwork among West African football migrants, the paper thus shows the local embedding of transnational football migration practices in the West African context. 相似文献
656.
657.
Christian Mehl Matthias Kern Friederike Neumann Telse Bähr Jörg Wiltfang Volker Gassling 《Journal of Zhejiang University. Science. B》2018,19(7):525-534
Objective
The aim of the current study was to evaluate the effect of ultraviolet (UV) photofunctionalization of dental titanium implants with exposure to the oral cavity on osseointegration in an animal model.Methods
Forty-eight titanium implants (Camlog® Conelog® 4.3 mmx9.0 mm) were placed epicrestally into the edentulous jaws of three minipigs and implant stability was assessed by measuring the implant stability quotient (ISQ). Prior to implantation half of the implants were photofunctionalized with intense UV-light. After three months, the implants were exposed and ISQ was measured again. After six months of implant exposure, the minipigs were sacrificed and the harvested specimens were analyzed using histomorphometric, light, and fluorescence microscopy.Main results
Forty-two of 48 implants osseointegrated. The overall mean bone-implant contact area (BIC) was (64±22)%. No significant differences were found in BIC or ISQ value (multivariate analysis of variance (MANOVA), P>0.05) between implants with and without exposure to UV photofunctionalization.Conclusions
No significant effects were observed on osseointegration of dental titanium implants nine months after exposure of UV photofunctionalization.658.
Rob Wass Adon Christian Michael Moskal 《International Journal for Academic Development》2017,22(4):293-306
AbstractAcademic development is often seen as a compliance activity, divorced from the teaching context and what teachers are trying to achieve in their classroom. In this case study, we researched Interpersonal Process Recall (IPR) as a reflective, non-judgmental approach to help tutors identify coherence between their teaching intentions and practice. Our results provided evidence that IPR helped tutors reflect on ways to improve their teaching. It also led to unexpected ‘discoveries’ not typically afforded by conventional academic development. We conclude that IPR offers a formative, teacher-focussed and contextual approach that has not been clearly defined in the literature. We offer the IPR model followed in this study for academic developers and researchers alike. 相似文献
659.
Shannon K. Jacobsen 《Journal of Criminal Justice Education》2017,28(4):559-579
When the Clery Act was passed in 1998, it required institutions of higher education to raise awareness among those in the campus community about the crime prevention programs they offer, as well as disseminate information about crime on campus, in an effort to reduce levels of individual risk. However, scant research investigates the impact that such institutional crime prevention efforts may have had on reports of both violent and property crime on campus. Using two different datasets, this study reveals that campuses with more security measures in place and more men enrolled than women are associated with the highest reports of violent crime. Alternatively, institutions with more security measures implemented and larger proportions of women enrolled have the fewest reports of violent crime on campus. This paper discusses the considerations that should be made when relying on official reports of crime on campus and concludes with implications for future research. 相似文献
660.
Andrea Ibieta J. Enrique Hinostroza Christian Labbé 《Journal of Research on Technology in Education》2019,51(3):217-238
AbstractResearch shows that students face a range of difficulties when using the Internet to solve information problems. Using a quasi-experimental design, we tested a strategy to improve Chilean 10th graders’ skills for information problem solving using the Internet (IPS-I). The intervention was based on a workshop in which students learned IPS-I strategies and solved information problems using a customized Internet search software package. Results showed that members of the experimental group changed their search behavior and improved the quality of their products. However, no correlation between the number of search actions and product quality was found. Based on this, we highlight the potential of combining teaching strategies to improve specific search skills and the use of customized search tools with embedded functionalities that foster good search techniques. 相似文献