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171.
Thibault Deschamps Déborah Nourrit Nicolas Caillou Didier Delignières 《Journal of sports sciences》2013,31(9):867-874
The aim of this study was to assess the effect of stress on a previously acquired motor coordination. Following a longitudinal learning experiment, four participants performed oscillations on a ski simulator, either in normal or stressful conditions. The results showed that the amplitude of the oscillations decreased under stress, but no significant effect was seen regarding coordination, suggesting the strong resistance to stress of overlearned behaviour. Nevertheless, for one participant, a transient regression towards a former stage of learning was observed. This result was consistent with the regression hypothesis formulated by Fuchs (). 相似文献
172.
Abstract The aims of this study were to test for the presence of a relative age effect among male (n = 119,715) and female (n = 12,823) members of the shooting sports federation, and to determine whether any such effect has an impact on dropout from the sport. For the boys and girls, the results show a uniform distribution of dropout. A relative age effect was not found for the girls, showing that in female shooting sports there is no such effect. For the males, a significant statistical relative age effect was not detected in the 18–20 and 13–14 year categories. However, a relative age effect was found among adults and the 11–12 and under 11 year categories. A significant “inverse” relative age effect was found for the 15–17 year group. Further qualitative research is needed to clarify which factors contribute to this asymmetric distribution of birth dates in French male shooting sports. 相似文献
173.
Radio personalities or presenters are important to music radio stations, as their individual personalities influence if, how, and to what extent listeners want to interact with radio stations and presenters during programs. Both parasocial interaction with the presenter and flow experiences are believed to mediate the listener–presenter relationship. With this in mind, we conducted an experiment in which 236 German radio listeners aged 14 to 49 were asked to listen to the same radio show, but with varying presenters. Mediation analysis revealed notable effects of presenters’ personalities on listeners’ behavioral intentions. Both parasocial interaction and flow were found to be important mediators of the discovered effects. 相似文献
174.
Fabrice Dosseville Sylvain Laborde Nicolas Scelles 《Learning and individual differences》2012,22(2):258-262
We investigated the influence of music during learning on the academic performance of undergraduate students, and more particularly the influence of affects induced by music. Altogether 249 students were involved in the study, divided into a control group and an experimental group. Both groups attended the same videotaped lecture, with the addition of classical music for the experimental group. Just after the lecture, both groups had to fill out a multiple choice questionnaire (MCQ) aimed to assess their learning during the lecture. The MCQ score of the experimental group was significantly higher than that of the control group. Affect just before the exam predicted significantly the MCQ-score, however music accounted for an additional part of variance. The effect of music on academic performance is not only about affects, and further research should investigate the underlying mechanisms resulting from a change in the perception of the learning environment. 相似文献
175.
Rasmussen N 《Social studies of science》2004,34(2):161-185
This paper explores the exchange relationships underlying collaborations between pharmaceutical companies and preclinical (laboratory-based) researchers, in universities and similar contexts, during the interwar period. It also examines the arguments advanced to justify such collaborations in particular contexts as a way of investigating the perceived costs and benefits, especially among the academic parties in these collaborations, and the way these collaborations were regarded in the US biomedical research community. 相似文献
176.
Frédérique Hintzy Nicolas Tordi Eric Predine Jean-Denis Rouillon Alain Belli 《Journal of sports sciences》2013,31(11):921-926
The aim of this study was to determine the relationship between force and velocity parameters during a specific multi-articular upper limb movement – namely, hand rim propulsion on a wheelchair ergometer. Seventeen healthy able-bodied females performed nine maximal sprints of 8?s duration with friction torques varying from 0 to 4?N?·?m. The wheelchair ergometer system allows measurement of forces exerted on the wheels and linear velocity of the wheel at 100 Hz. These data were averaged for the duration of each arm cycle. Peak force and the corresponding maximal velocity were determined during three consecutive arm cycles for each sprint condition. Individual force–velocity relationships were established for peak force and velocity using data for the nine sprints. In line with the results of previous studies on leg cycling or arm cranking, the force–velocity relationship was linear in all participants (r?=??0.798 to ?0.983, P?<0.01). The maximal power output (mean 1.28?W?·?kg?1) and the corresponding optimal velocity (1.49?m?·?s?1) and optimal force (52.3?N) calculated from the individual force–velocity regression were comparable with values reported in the literature during 20 or 30?s wheelchair sprints, but lower than those obtained during maximal arm cranking. A positive linear relationship (r?=?0.678, P?<0.01) was found between maximal power and optimal velocity. Our findings suggest that although absolute values of force, velocity and power depend on the type of movement, the force–velocity relationship obtained in multi-articular limb action is similar to that obtained in wheelchair locomotion, cycling and arm cranking. 相似文献