Intertwining beyond – critical reading as a labour of care     

Maria Puig de la Bellacasa 《Journal of Cultural Economy》2018,11(3):274-276

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Does eccentric exercise stimulate sarcomerogenesis?     

Walter Herzog  Heiliane de Brito Fontana 《运动与健康科学(英文)》2022,11(1):40-42

Eccentric exercise has been associated with an increase in serial sarcomere number in some studies,1 but not in others.2 Similarly,increasing excursion of muscles resulted in sarcomerogenesis in some studies using growing animals,3 but not in others using skeletally mature animals.4 However,chronic elongation and chronic shortening appears to be a strong regulator of sarcomere number increase5,6 and decrease,5,7 respectively,in animal models.Despite an abundance of research on the regulation of sarcomerogenesis under a variety of conditions,the mechanisms underlying in series sarcomere number adaptations in skeletal muscles remain a puzzle,especially in non-invasive human studies where measurements of sarcomerogenesis following interventions have not been possible to date.  相似文献   

Improved children’s motor learning of the basketball free shooting pattern by associating subjective error estimation and extrinsic feedback     

Leandro de Carvalho da Silva  Carla Ferro Pereira-Monfredini 《Journal of sports sciences》2017,35(18):1825-1830

This study aimed at assessing the interaction between subjective error estimation and frequency of extrinsic feedback in the learning of the basketball free shooting pattern by children. 10- to 12-year olds were assigned to 1 of 4 groups combining subjective error estimation and relative frequency of extrinsic feedback (33% × 100%). Analysis of performance was based on quality of movement pattern. Analysis showed superior learning of the group combining error estimation and 100% feedback frequency, both groups receiving feedback on 33% of trials achieved intermediate results, and the group combining no requirement of error estimation and 100% feedback frequency had the poorest learning. Our results show the benefit of subjective error estimation in association with high frequency of extrinsic feedback in children’s motor learning of a sport motor pattern.  相似文献   

Optimal sampling frequency in recording of resistance training exercises     

Paolo Bardella  Irene Carrasquilla García  Marco Pozzo  Julio Tous-Fajardo  Eduardo Saez de Villareal 《Sports biomechanics / International Society of Biomechanics in Sports》2017,16(1):102-114

The purpose of this study was to analyse the raw lifting speed collected during four different resistance training exercises to assess the optimal sampling frequency. Eight physically active participants performed sets of Squat Jumps, Countermovement Jumps, Squats and Bench Presses at a maximal lifting speed. A linear encoder was used to measure the instantaneous speed at a 200 Hz sampling rate. Subsequently, the power spectrum of the signal was computed by evaluating its Discrete Fourier Transform. The sampling frequency needed to reconstruct the signals with an error of less than 0.1% was f_99.9 = 11.615 ± 2.680 Hz for the exercise exhibiting the largest bandwidth, with the absolute highest individual value being 17.467 Hz. There was no difference between sets in any of the exercises. Using the closest integer sampling frequency value (25 Hz) yielded a reconstruction of the signal up to 99.975 ± 0.025% of its total in the worst case. In conclusion, a sampling rate of 25 Hz or above is more than adequate to record raw speed data and compute power during resistance training exercises, even under the most extreme circumstances during explosive exercises. Higher sampling frequencies provide no increase in the recording precision and may instead have adverse effects on the overall data quality.  相似文献   

How does education have an impact on ethnocentrism? A structural equation analysis of cognitive,occupational status and network mechanisms     

Cecil Meeusen  Thomas de Vroome  Marc Hooghe 《Int J Intercult Relat》2013

Previous studies have distinguished cognitive, occupational status and network mechanisms in the relation between education and ethnocentrism. Hypotheses on these mediating mechanisms are derived from socialization theory, realistic group threat and contact theory. In the current study we use structural equation modeling to investigate the explanatory power of these three mechanisms simultaneously. The analysis is based on a representative population survey from the Netherlands (NELLS 2009, n = 1910). The results show that more than half of the initial association between education and ethnocentrism can be attributed to cognitive ability and occupational status mechanisms. The remaining part of the overall association, however, still has to be modeled as a direct relationship between education and ethnocentrism. This direct association can be attributed either to social desirability or to a direct liberalizing effect of education on social and political attitudes. Our analysis tentatively suggests that the rise of average education levels in Western societies might lead to less ethnocentric attitudes via the cognitive sophistication mechanism.  相似文献   

Temptation to inquiry     

Michael Eyquem de Montaigne 《Quarterly Journal of Speech》2013,99(2)

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Critical costs: negotiating feminism 'at home'     

Malathi de Alwis 《Inter-Asia Cultural Studies》2013,14(3):493-499

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Education and training 14–19: Curriculum,qualifications and organisation     

James de Winter 《Curriculum Journal》2013,24(1):98-99

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Thinking about University Video Centres in the Netherlands     

W. de Vogel M.D. 《Educational Media International》2013,50(2):19-25

The introduction and use of forward thinking in modern planning is nowadays no longer merely a fashion but an absolute necessity, be it only to make sure that the skeleton of each new university building is provided with the right holes and channels through which to run the cables that might be needed at a future date for internal and external communications.  相似文献   

Policy intervention and power shifts: an evaluation of South Africa's education restructuring policies     

Francine de Clercq 《教育政策杂志》2013,28(3):127-146

This paper argues that the South African educational restructuring policy proposals are unlikely to become interventions that help bringing about greater development, equity, participation and redress. The reasons for this are manifold. It is contended that the policy proposals are flawed in their conceptualization of the problems and misjudge the educational context and dynamics on the ground. These interventions favour the interests of the more organized and privileged sections of society and only indirectly address the needs of the excluded and disadvantaged. The policy proposals are also based on problematic assumptions about policy and the policy process, and the relationship between policy and practice. Finally, these proposals do not have an appropriate understanding of the change process and are unable to develop strategies to influence the reform process and empower the disadvantaged to struggle for a fairer, more equitable and effective education and training system.  相似文献