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Jeffrey William Frederick Aldous Bryna Catherine Rose Chrismas Ibrahim Akubat Charlotte Anne Stringer Grant Abt 《European Journal of Sport Science》2019,19(2):156-165
This investigation examined the effects of three pre-match and half-time cooling manoeuvres on physical performance and associated physiological and perceptual responses in eight University soccer players during a non-motorised treadmill based individualised soccer-specific simulation [intermittent soccer performance test (iSPT)] at 30°C. Four randomised experimental trials were completed; following 30-min (pre-match) and 15-min (half-time) cooling manoeuvres via (1) ice slurry ingestion (SLURRY); (2) ice-packs placed on the quadriceps and hamstrings (PACKS); (3) mixed-methods (MM; PACKS and SLURRY concurrently); or no-cooling (CON). In iSPT first half, a moderate increase in total (Mean?±?Standard Deviation: 108?±?57 m, qualitative inference: most likely, Cohen’s d: 0.87, 90%CL: ±0.31), high-speed (56?±?46 m, very likely, 0.68?±?0.38) and variable run (15?±?5 m, very likely, 0.81?±?0.47) distance covered was reported in MM compared with CON. Additionally, pre-match reductions in thermal sensation (–1.0?±?0.5, most likely, –0.91?±?0.36), rectal (–0.6?±?0.1°C, very likely, –0.86?±?0.35) and skin temperature (–1.1?±?0.3°C, very likely, –0.88?±?0.42) continued throughout iSPT first half. Physical performance during iSPT first half was unaltered in SLURRY and PACKS compared to CON. Rectal temperature was moderately increased in SLURRY at 45-min (0.2?±?0.1°C, very likely, 0.67?±?0.36). Condition did not influence any measure in iSPT second half compared to CON. Only MM pre-match cooling augmented physical performance during iSPT first half, likely due to peripheral and central thermoregulatory factors favourably influencing first half iSPT performance. Further practical half-time cooling manoeuvres which enhance second half performance are still required. 相似文献
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一这几年来我所从事的一项研究工作是关于本世纪二十年代初上海的报纸文化。〔2〕我的研究重点是一份上海报纸——《商报》。在1921年,《商报》的发行量名列第三,仅居《申报》和《新闻报》之后。从发行量的角度讲,在当时它是一份比较重要的报纸。但是在方汉奇和马光仁所写的两本重要的新闻史著作里,《商报》却很少被提及。〔3〕关于《商报》的材料主要来自于以前记者的回忆录。虽然现在《商报》几乎从历史的记忆里消失,但它于1921年在上海突然出现却是相当引人注目的。张静庐这样写到:“在五四运动以后,上海曾异军突起地出现了一种新报纸…… 相似文献
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Bryna Chrismas Lee Taylor Alexander Smith Philip Pemberton Jason Charles Siegler Adrian Wayne Midgley 《Measurement in physical education and exercise science》2018,22(3):191-199
To examine the reproducibility of three measurement techniques used to determine creatine kinase, interleukin-6 and high-sensitivity C-reactive protein, 50 participants had blood samples taken on two occasions. Fingertip plasma samples were analysed using the Reflotron for CK determination. Venous blood samples collected into serum separator tubes were used for IL-6 and hs-CRP analyses. IL-6 was measured using an enzyme linked immune assay development kit. The hs-CRP was measured by an in-house ELISA method. Dependent t-tests showed no systematic bias between samples. The interdian CV was 20.0% for CK, 15.3% for IL-6 and 44.2% for hs-CRP. The intraclass correlation coefficient was 0.90 for CK, 0.98 for IL-6 and 0.70 for hs-CRP. The 95% limits of agreement were ?69.7 to 63.5 IU/L for CK, ?1.48 to 1.80 pg/ml for IL-6 and ?1.10 to 0.91 µg/L for hs-CRP. The results demonstrate low absolute reproducibility, which may obscure a true experimental effect. 相似文献
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Open access publishing is now an accepted method of scholarly communication. However, the greatest traction for open access publishing thus far has been in the sciences. Penetration of open access publishing has been much slower among the social sciences. This study surveys 309 authors from recent issues of open access journals in education to determine why they choose to publish in open access journals and to gain insight into the ways publishing practices within the discipline itself impact the willingness of authors to engage in open access publishing. 相似文献
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Bryna Coonin 《Journal of Business & Finance Librarianship》2013,18(3):193-212
Open access (OA) publishing is now accepted as an integral part of the emerging trends within scholarly communication. Business librarians, like their subject specialist colleagues in other disciplines, are increasingly called upon to interpret scholarly communication trends to their faculty. This study surveys 1,293 business faculty from American schools of business accredited by the Association to Advance Collegiate Schools of Business. Issues explored include business faculty publishing practices within the discipline and how these affect academic advancement, obtaining articles for their own research, electronic publishing, self-archiving, and their perceptions about OA publishing generally. 相似文献
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ABSTRACTIn this article, we discuss a museum program for teens located in an urban environment. The participants were high school students from public, private, religious and home schools. The program allowed learning to occur in an informal setting and united teens from one city through a common interest in visual art. Also, it was an opportunity for the museum to build a teen audience and strengthen community involvement. As part of the program, the participants and their parents were surveyed to study what aspects of the program they found to be meaningful and relevant. The results underline the importance of developing and maintaining museum education for teens. 相似文献
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