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排序方式: 共有97条查询结果,搜索用时 15 毫秒
31.
Marine Delaval Nicolas Michinov Olivier Le Bohec Benjamin Le Hénaff 《Interactive Learning Environments》2017,25(1):35-47
The aim of this study was to examine how social or temporal-self comparison feedback, delivered in real-time in a web-based training environment, could influence the academic performance of students in a statistics examination. First-year psychology students were given the opportunity to train for a statistics examination during a semester by doing online exercises in a web-based training environment. Once connected, students received in real-time either social comparison feedback (their score was compared to the mean score of all first-year students) or temporal-self comparison feedback (their score was compared, week by week, with their own previous score). The fact that students were free to connect to the web-based training environment heightened self-regulation differences such as academic procrastination, which was considered as a moderating variable in this study. Because academic performance was measured, the students’ background in mathematics and statistics was also controlled. Irrespective of the students’ background, the results reveal a positive influence of social comparison feedback on statistics exam performance, but only among students who did not delay doing exercises in the web-based training environment. By contrast, temporal-self comparison feedback did not have any effect on performance. Some recommendations for optimizing the efficacy of web-based training environments can be proposed, taking into account both social comparison feedback and academic procrastination. 相似文献
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Wafa Douzi Olivier Dupuy Maxence Tanneau Geoffroy Boucard Romain Bouzigon 《European Journal of Sport Science》2019,19(6):860-867
Exercise training during evening may disturb sleep patterns and hinder recovery process. The present study aimed to examine the effect of whole body cryotherapy (WBC) exposure after training in the evening on sleep quality and night heart rate variability (HRV). A total of 22 physically active men were randomized to undergo either WBC (3-min at ?40°C, wind speed of 2.3?m?s?1) or passive recovery (control) following an evening training consisting of 25?min of continuous running at 65% of the maximal aerobic speed (MAS) followed by intermittent running at 85% of the MAS. Each night following the training, the number of movements and HRV during sleeping time were recorded. The next morning, subjective sleep quality and perceived pain were assessed using Spiegel questionnaire and a visual analogue scale, respectively. The number of movements during the night following WBC was significantly reduced (p?0.05) compared with the control condition. Subjective sleep quality following WBC was significantly better than the control group (p?0.05). During the estimated slow-wave sleep (SWS), the high frequency power (HF) was higher in the WBC group than the control group (p?0.05), and the low frequency power (LF) and the LF/HF ratio were lower than the control group (p?0.05). Pain was significantly reduced following WBC compared to the control (p?0.01). In conclusion, the use of 3-min WBC after training in the evening improves subjective and objective sleep quality in physically active subjects, which may be due to greater pain relief and improved parasympathetic nervous activity during the SWS period. 相似文献
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The purpose of this study was to determine the effect of triathlon training using multiple, short cycle-run sequences (multicycle-run training) on cycle-run performance. Twelve competitive triathletes, randomized into two groups, underwent multicycle-run training or normal training for 6 weeks. During this period, baseline training remained the same for both groups, and only the high-intensity component differed. The differentiated exercises were performed at or above 100% maximal aerobic velocity. The improvements in overall cycle-run performance were similar (3.3 +/- 1.4 % and 6.1 +/- 1.7% rise in Performance in multicycle-run and normal training, respectively). However, the improvement in performance was significantly greater for the multicycle-run training (-11.2 +/- 6.8 s versus -1.2 +/- 7. 7 s for multicycle-run training and normal training, respectively) during both the cycle-run change and the first 333-m lap, which together are termed the cycle-run transition. We concluded that 6 weeks of multicycle-run training did not induce greater improvement in cycle-run performance than did normal training in competitive triathletes. However, it did induce significant improvement in the cycle-run transition. This finding indicates that multicycle-run training may help competitive triathletes to develop greater skill and better physiological adaptations during this critical transition period of the triathlon race. 相似文献
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Alain Brechbühl Annemarie Schumacher Dimech Olivier N. Schmid Roland Seiler 《Sport in Society》2017,20(7):861-879
Despite a large body of literature about fan violence issues, research investigating perceptions and dynamics in potentially violent situations, called critical incidents (CIs), is missing. This qualitative study examined the perceptions and dynamics of CIs involving ultra football fans. Fifty-nine semi-structured interviews with individuals (fans, police officers or security employees) involved in eight CIs were conducted and analysed using Interpretative Phenomenological Analysis. The assessment of legitimacy of an out-group’s actions strongly influenced the perception of a CI, which is in line with the Elaborated Social Identity Model. Informative intergroup communication about the own intentions seemed to increase perception of legitimacy, while arrests of fans due to pyrotechnics were perceived by fans as illegitimate. The local fan culture, e.g. the fans’ use of pyrotechnics for their support, is relevant for the understanding of this assessment of legitimacy. 相似文献
36.
Reliability of unipodal and bipodal counter movement jump landings in a recreational male population
Cédric Schwartz Bénédicte Forthomme Julien Paulus Jean-François Kaux Olivier Brüls Vincent Denoël 《European Journal of Sport Science》2017,17(9):1143-1152
Movement patterns during landing have been suggested to be related to injury risk. The purpose of this study was to determine the inter-session reliability of kinematic variables and ground reaction forces during landing in a population of male recreational athletes after a counter movement jump. Both unipodal and bipodal landings were evaluated. Furthermore, the possibility to improve landing reliability with a verbal instruction was also studied. Twenty-four male volunteers with no history of lower extremity trauma were randomly assigned to two groups (with and without verbal landing instruction). An optoelectronic 3D system and force plates were used to measure the lower limb joint angles and the ground reaction forces during landing. Intraclass correlation values show moderate to excellent inter-session reliability for the bipodal task (ICC average: 0.80, range: 0.46–0.97) and poor to excellent reliability for the unipodal task (ICC average: >0.75, range: 0.20–0.95). However, large standard errors of measurement values at the ankle joint at impact (27.6?±?11.5°) and for the vertical ground reaction forces (394?±?1091 N) show that some variables may not be usable in practice. The verbal instruction had a negative effect on the reliability of unipodal landing but improved the reliability of bipodal landing. These findings show that the reliability of a landing task is influenced by its motor complexity as well as the instruction given to the subject. 相似文献
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We use a specially designed survey on French firms located in Haute-Savoie to provide empirical evidence suggesting that Information and Communication Technologies adoption is not only influenced by the traditional factors of technology diffusion but also by complementarity effects between strategies, organization and information technologies. The data collected permitted several advances. Firstly, we could study authentic ICT while the recent literature has mainly focused on computer capital stocks or automation tools. Secondly, we constructed measures of the determinants put forward by the models of technology diffusion. Thirdly, we studied three kinds of practices: organizational and strategic practices, technological choices. 相似文献
40.
Darrigol O 《Isis; an international review devoted to the history of science and its cultural influences》2004,95(4):614-626
This essay discusses attempts that have been made to explain the striking similarities between two theories propounded in 1905 by Albert Einstein and Henri Poincaré without any mutual reference. 相似文献