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101.
Maddison J. Jones Brian Dawson Daniel F. Gucciardi Peter R. Eastwood Joanna Miller Shona L. Halson 《Journal of sports sciences》2019,37(8):864-870
The present study aimed to investigate pre-sleep behaviours (including evening electronic device use) and sleep quantity in well-trained athletes. Seventy well-trained athletes (44 females, 26 males) aged 21 ± 4 y from a range of team and individual sports were asked to complete an online sleep diary for 7 days. The sleep diary included questions about pre-sleep behaviours (e.g. napping, caffeine intake), electronic device use in the 2 h prior to bedtime (e.g. type of device and duration of use) and sleep (e.g. time in bed, sleep onset latency). On average, athletes spent 8:20 ± 1:21 h in bed each night. Associations between age, time in bed and sleepiness suggested that younger athletes spent more time in bed (B = -0.05, p = 0.001) but felt sleepier (r = -0.32, p < 0.01) than older athletes. On average, athletes mostly used electronic devices for 0–30 min prior to sleep. The use of multiple devices in the evening was associated with more perceived difficulty in falling asleep (B = 0.22, p = 0.03), but no associations existed with other sleep variables. In summary, younger athletes may require later start times or improved sleep quality to resolve excessive sleepiness. 相似文献
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103.
Daniel H. Mansson Aldís G. Sigurðardóttir 《Journal of Intercultural Communication Research》2017,46(2):161-172
This study sought to address Hofstede and McCrae’s (2004) call for systematic cross-cultural comparisons of trait-like attributes. Specifically, we examined the extent to which Danish, Icelandic, Polish, and American adults’ trait affection given and trait affection received are (a) dependent on national origin, and (b) associated with Hofstede’s dimensions of cultures (i.e. individualism-collectivism, masculinity-femininity, power distance, and uncertainty avoidance). The participants (N = 606) completed a questionnaire in English that consisted of the trait affection given and trait affection received scales. Results of a multivariate analysis of variance and linear regression analyses revealed that people’s trait affection given and received are (a) dependent on national origin, and (b) associated with Hofstede’s dimensions of cultures. 相似文献
104.
Daniel Souleles 《Journal of Cultural Economy》2017,10(4):393-404
ABSTRACTEthnographic and social scientific accounts of the financiers that buy and sell companies for profit often homogenize the players in these social dramas, relying on blunt, totalizing definitions of culture or overly deterministic articulations of habitus. This article, drawing on a two-year study of private equity investors, offers an alternative analytic frame for making sense of how private equity people buy and sell companies. It explores the ways in which private equity people make arguments persuading one another and the larger public that an investment is worth making. Important to these arguments are not only substantive content, the evidence that investors marshal to support a thesis, but also reflective evaluation of what counts as good evidence, meta-commentary. It is in these split levels of analysis that we can appreciate the cultural diversity within finance, Wall Street, and investment banking. I will also suggest that understanding how investors are arguing substantively as well as meta-pragmatically begins to outline a useful theory of culture change within the world of investment banking. 相似文献
105.
Daniel López-Plaza Fernando Alacid José María Muyor Pedro Ángel López-Miñarro 《Journal of sports sciences》2017,35(11):1083-1090
This study aimed to identify the maturity-related differences and its influence on the physical fitness, morphological and performance characteristics of young elite paddlers. In total, 89 kayakers and 82 canoeists, aged 13.69 ± 0.57 years (mean ± s), were allocated in three groups depending on their age relative to the age at peak height velocity (pre-APHV, circum-APHV and post-APHV) and discipline (kayak and canoe). Nine anthropometric variables, a battery of four physical fitness tests (overhead medicine ball throw, countermovement jump, sit-and-reach test and 20 m multistage shuttle run test) and three specific performance tests (1000, 500 and 200 m) were assessed. Both disciplines presented significant maturity-based differences in all anthropometric parameters (except for fat and muscle mass percentage), overhead medicine ball throw and all performance times (pre > circum > post; P < 0.05). Negative and significant correlations (P < 0.01) were detected between performance times, chronological age and anthropometry (body mass, height, sitting height and maturity status), overhead medicine ball throw and sit and reach for all distances. These findings confirm the importance of maturity status in sprint kayaking and canoeing since the more mature paddlers were also those who revealed largest body size, physical fitness level and best paddling performance. Additionally, the most important variables predicting performance times in kayaking and canoeing were maturity status and chronological age, respectively. 相似文献
106.
Janet H. Zhang Aislinn J. C. McPhail Winko W. An Waqar M. Naqvi Daniel L. H. Chan Ivan P. H. Au 《Journal of sports sciences》2017,35(15):1533-1537
This study sought to compare the kinetics and kinematics data in a group of habitual shod runners when running in traditional running shoes and newly designed minimalist shoes with lug platform. This novel footwear design claims to simulate barefoot running and reduce energy loss during impact. We compared footstrike angle (FSA), vertical average (VALR) and instantaneous (VILR) loading rates, energy loss and initial vertical stiffness between two shoe conditions. Runners demonstrated a decreased FSA while running in minimalist shoes with lug platform than traditional shoes (P = 0.003; Cohen’s d = 0.918). However, we did not observe a landing pattern transition. VALR and VILR between two footwear conditions showed no significant difference (P = 0.191–0.258; Cohen’s d = 0.304–0.460). Initial vertical stiffness (P = 0.032; Cohen’s d = 0.671) and energy loss (P = 0.044; Cohen’s d = 0.578) were greater when running in minimalist shoes with lug platform. The results show that minimalist shoes with lug platform reduce the FSA but may not lead to a landing pattern switch or lower vertical loading rates. Interestingly, the new shoe design leads to a greater energy loss than traditional running shoes, which could be explained by a higher initial vertical stiffness. 相似文献
107.
Daniel Johnson 《Cultural and Social History》2013,10(3):343-364
AbstractOver the summer and autumn of 1739 Philadelphia’s two newspapers published competing versions of a hearing in the Pennsylvania assembly that was described as the ‘Affair of the Tanners’. What began as a minor property dispute in the colonial assembly became, with the aid of the local press, a citywide paper war for the support of the urban populace. This article argues the affair provides unique evidence for competing conceptions of the common good in the eighteenth-century colonial city, and was an expression of conflict with deep roots in Philadelphia’s history. The affair also shows how the medium of print could reflect both transatlantic cultural processes as well as distinctly local grievances, as a group of prosperous city artisans and their opponents utilized the city’s newspapers to articulate competing commonwealth ideologies. 相似文献
108.
Daniel Jütte 《Cultural and Social History》2013,10(5):621-641
ABSTRACTIn the modern world, glass windows are considered an indispensable element of the built environment. Throughout premodern times, however, glass was not universally used in European architecture. This article argues that the rise of glass in Western architecture was neither an inevitable nor a linear process, but rather a response to certain social, cultural and environmental factors that gained increasing relevance from the late medieval period onwards. In other words, glass windows are a cultural convention, reflecting some of the wide-ranging and transformative challenges that Europeans faced in the late medieval and early modern period. 相似文献
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