Facebook as a learning tool? A case study on the appropriation of social network sites from mobile phones in developing countries     

Christoph Pimmer  Sebastian Linxen  Urs Gröhbiel 《British journal of educational technology : journal of the Council for Educational Technology》2012,43(5):726-738

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Oxygen uptake during mini trampoline exercise in normal-weight,endurance-trained adults and in overweight-obese,inactive adults: A proof-of-concept study     

Christoph Höchsmann  Anja Rossmeissl  Sandra Baumann  Denis Infanger  Arno Schmidt-Trucksäss 《European Journal of Sport Science》2018,18(5):753-761

Objectives: To examine cardiorespiratory exertion during mini trampoline exercises of different intensities in both endurance-trained athletes and overweight-obese adults. Methods: Physically healthy participants (Group A: normal-weight, endurance-trained athletes; Group B: inactive, overweight-obese adults) participated in two measurement appointments and three training sessions in between appointments, in which participants familiarized themselves with the use of the mini trampoline and the execution of the exercises. The primary outcome was the ?O_2peak for each of the six mini trampoline exercises relative to the ?O_2peak as established during an all-out exercise test on a bike ergometer during the first measurement appointment. Secondary outcomes were average ?O₂ as well as maximum and average heart rate. Results: The six mini trampoline exercises generated ?O_2peak values between 42% and 81% in the endurance-trained athletes and between 58% and 87% in the overweight-obese participants, both in relation to the bike ergometer ?O_2peak. Average ?O₂ values ranged from 35% to 69% (endurance-trained athletes) and from 48% to 71% (overweight-obese participants), depending on exercise. Average heart rate likewise lay in a range that can be categorized as moderate-to-vigorous aerobic exercise for both groups. A moderate-to-strong correlation (0.658 to 0.875, depending on exercise) between bike ergometer ?O_2peak and mini trampoline ?O_2peak was found for all six exercises. Conclusions: Mini trampoline exercise has the potential to produce training intensities that concur with established exercise guidelines. The exercise intensity is self-adjusting and allows for an effective and safe workout for different users with a wide range of fitness levels.  相似文献   

Effects of wearing lower leg compression sleeves on locomotion economy     

Eduard Kurz  Christoph Anders 《Journal of sports sciences》2018,36(18):2105-2110

The purpose of this investigation was to assess the effect of compression sleeves on muscle activation cost during locomotion. Twenty-two recreationally active men (age: 25 ± 3 years) ran on a treadmill at four different speeds (ordered sequence of 2.8, 3.3, 2.2, and 3.9 m/s). The tests were performed without (control situation, CON) and while wearing specially designed lower leg compression sleeves (SL). Myoelectric activity of five lower leg muscles (tibialis anterior, fibularis longus, lateral and medial head of gastrocnemius, and soleus) was captured using Surface EMG. To assess muscle activation cost, the cumulative muscle activity per distance travelled (CMAPD) of the CON and SL situations was determined. Repeated measures analyses of variance were performed separately for each muscle. The analyses revealed a reduced lower leg muscle activation cost with respect to test situation for SL for all muscles (p < 0.05, η_p² > 0.18). The respective significant reductions of CMAPD values during SL ranged between 4% and 16% and were largest at 2.8 m/s. The findings presented point towards an improved muscle activation cost while wearing lower leg compression sleeves during locomotion that have potential to postpone muscle fatigue.  相似文献   

Leisure participation: modelling the decision to engage in sports and culture     

Kirstin Hallmann  Cristina Muñiz Artime  Christoph Breuer  Sören Dallmeyer  Magnus Metz 《Journal of Cultural Economics》2017,41(4):467-487

Participation in sport and participation in cultural activities are usually studied separately. However, since both activities dominate the leisure time of most individuals, it is reasonable to analyse simultaneously the determinants of participation in both activities. Informed by the economic household theory, this study examined the core factors of time, income, human capital as well as several socio-demographic factors. The results showed that there was as small but significant correlation between sports and cultural participation. Thus, both can be described as complementary and competing activities. Leisure time, gender, education, nationality and subjective well-being were significant predictors of both sports and cultural participation. Differences were found for the variables age and income. This paper also describes the characteristics of those individuals who are not likely to participate in either activity and emphasises the importance of social inclusion programmes.  相似文献   

Munich 1972. Tragedy,Terror and Triumph at the Olympic Games     

Christoph Wagner 《Sport in History》2016,36(1):139-141

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The impact of sub-skills and item content on students’ skills with regard to the control-of-variables strategy     

Martin Schwichow  Simon Christoph  William J. Boone  Hendrik Härtig 《International Journal of Science Education》2016,38(2):216-237

The so-called control-of-variables strategy (CVS) incorporates the important scientific reasoning skills of designing controlled experiments and interpreting experimental outcomes. As CVS is a prominent component of science standards appropriate assessment instruments are required to measure these scientific reasoning skills and to evaluate the impact of instruction on CVS development. A detailed review of existing CVS instruments suggests that they utilize different, and only a few of the four, critical CVS sub-skills in the item development. This study presents a new CVS assessment instrument (CVS Inventory, CVSI) and investigates the validity of student measures derived from this instrument utilizing Rasch analyses. The results indicate that the CVSI produces reliable and valid student measures with regard to CVS. Furthermore, the results show that the item difficulty depends on the CVS sub-skills utilized in item development, but not on the item content. Accordingly, previous instruments that are restricted to a few CVS sub-skills tend to over- or underestimate students’ CVS skills. In addition, these results indicate that students are able to use CVS as a domain general strategy in multiple content areas. Consequences for science instruction and assessment are discussed.  相似文献   

The Competence Screening Questionnaire for Higher Education: Adaptable to the needs of a study programme     

Evelyn Bergsmann  Julia Klug  Christoph Burger  Nora Först  Christiane Spiel 《Assessment & Evaluation in Higher Education》2018,43(4):537-554

There is a lively discussion on how to evaluate competence-based higher education in both evaluation and competence research. The instruments used are often limited to course evaluation or specific competences, taking a rather narrow perspective. Furthermore, the instruments often comprise predetermined competences that cannot be adapted to higher education needs. The aim of this paper is to provide a flexible screening instrument into which practitioners/evaluators of study programmes can themselves insert the competences they are interested in, i.e. competences students ought to acquire through their study programme. The present study describes the development of the Competence Screening Questionnaire for Higher Education (CSQ-HE) in different domains of higher education. Results show that the CSQ-HE provides plausible screening information whilst fulfilling evaluation standards. It can be integrated into a higher education institution’s internal quality management system to demonstrate a programme’s legitimacy and enhance competence-based teaching and learning. Strengths, weaknesses and implications for practice are discussed.  相似文献   

Determinants of labour migration of elite sport coaches     

Johannes Orlowski  Christoph Breuer 《European Journal of Sport Science》2016,16(6):711-718

Previous research examining labour migration in sport focused on athletes in professional team sports. The purpose of this study is to analyse the factors influencing the migration probability of elite sport coaches in Germany (i.e. national coaches, state coaches, and coaches at Olympic training bases). From a theoretical perspective, labour migration of athletes is affected by economic, social, political, competitive, geographic and cultural factors. This study examines whether these factors can be applied to coaches. Primary data were collected using an online survey of elite sport coaches in Germany. Applying a conjoint design, respondents were presented with 10 migration scenarios leading to a sample size of n?=?1860 for the empirical analysis. In the scenarios, the coaching position openings abroad differed in terms of income level, contract length, weekly workload, responsibility for personnel, reputation of coaching job, career perspectives, sporting performance of athletes, distance from Germany, and predominant job language. Coaches were asked for their migration probability contingent on the specific scenario. On average, migration probability was 24.2%. The results of regression analysis showed that higher income, contracts of longer duration, responsibility for personnel and speaking the respective language significantly increased the migration probability, while distances of nine flight hours and more, lower reputation and career perspectives reduced it. The findings have implications for policy-makers: they indicate in what areas the situation of coaches needs improvement to increase the likelihood of retaining elite sport coaches in the German sport system.  相似文献   

Nichtmedikamentöse Therapie von Fettstoffwechselstörungen: Möglichkeiten und Grenzen     

Christoph H. Saely  Heinz Drexel

《Wiener klinische Wochenschrift Education》2018,13(1-4):1-11

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Perceived—and not manipulated—self-control depletion predicts students’ achievement outcomes in foreign language assessments     

Christoph Lindner  Jan Retelsdorf 《教育心理学》2020,40(4):490-508

Abstract

In the present study we investigated which role manipulated (i.e., experimentally induced) and perceived (i.e., self-reported) self-control depletion plays in students’ (N?=?176 seventh graders) achievement-related experiences and behaviour during a test of English as a foreign language, while controlling for trait self-control. Our successful experimental manipulation of self-control depletion revealed that there were no effects on any of the students’ outcome variables. However, students who reported high self-control depletion immediately after the experimental manipulation were less motivated to work on the subsequent test, reported more distracting thoughts, showed lower performance, and felt more depleted at the end of the test session. Trait self-control turned out to be a protective and supportive factor for most of our outcome variables. Our results provide evidence that the perceived and not the manipulated level of self-control depletion is a predictor of achievement-related behaviour in tests on English as a foreign language.  相似文献