文化功能视角下江口“金钱杆”的发展逻辑研究     

陈伟 《中华武术(研究)》2021,(1):119-121

文化功能也就是"出之于人,归之于人",江口土家族"金钱杆"起于秦末时期的西楚霸王,形于族人生产生活实践中。经过研究发现,"金钱杆"是具有彰显土家族文化的独特符号、"常"与"非常"之间转换的独特节点、教化孩童的重要载体以及增强体质的独特途径的少数民族传统体育活动。本研究主要探求"金钱杆"发展逻辑,旨在为"金钱杆"的传承和发展提供有益的指导。  相似文献   

“一带一路”倡议下传统武术的当代价值与功能审视     

颜玉凤 《中华武术(研究)》2020,(1):66-69

传统武术在我国有着悠久的历史,是我国优秀的传统文化,集强身健体、技击防卫、娱乐观赏等价值功能于一体。“一带一路”倡议的提出对传统武术在现今社会中的价值和功能产生了新的影响。文章运用文献资料法、逻辑分析法等研究方法,从“一带一路”倡议对传统武术产生的影响、“一带一路”倡议下传统武术的当代价值、“一带一路”倡议下传统武术的当代功能三个方面进行深度分析,探究“一带一路”倡议下传统武术的当代价值与功能。  相似文献   

Acute cardiovascular responses to interval exercise: A systematic review and meta-analysis     

Kym Joanne Price  Brett Ashley Gordon  Stephen Richard Bird  Amanda Clare Benson 《Journal of sports sciences》2020,38(9):970-984

ABSTRACT

Interval exercise training is increasingly recommended to improve health and fitness; however, it is not known if cardiovascular risk is different from continuous exercise protocols. This systematic review with meta-analyses assessed the effect of a single bout of interval exercise on cardiovascular responses that indicate risk of cardiac fibrillation and infarction compared to continuous exercise. Electronic databases Medline, CINAHL, Embase, Scopus and Cochrane were searched. Key inclusion criteria were: (1) intervals of the same intensity and duration followed by a recovery period and (2) reporting at least one of blood pressure, heart rate variability, arterial stiffness or function. Cochrane Risk of Bias tool and GRADE approach were used. Meta-analyses found that systolic blood pressure responses to interval exercise did not differ from responses to continuous exercise immediately (MD 8 mmHg [95% CI ?32, 47], p = 0.71) or at 60 min following exercise (MD 0 mmHg [95% CI ?2, 1], p = 0.79). However, reductions in diastolic blood pressure and flow-mediated dilation with interval exercise were observed 10–15 min post-exercise. The available evidence indicates that interval exercise does not convey higher cardiovascular risk than continuous exercise. Further investigation is required to establish the safety of interval exercise for clinical populations.  相似文献   

中国高新技术产业创新效率的时空分异及影响因素研究——基于随机前沿生产函数模型分析          下载免费PDF全文

易明  彭甲超吴超 《科研管理》2019,40(11):22-31

Spillovers in the production of knowledge: A meta-regression analysis     

Pedro Cunha Neves  Tiago Neves Sequeira 《Research Policy》2018,47(4):750-767

The production of knowledge was subjected to quantitative analysis in the second half of the twentieth century, following Arrow (1962). The determinants of knowledge and the externalities present in the innovation process were discussed with immediate policy influence. In particular, the presence and strength of the spillover of the pool of past knowledge has encouraged high subsidization of R&D in the most developed countries. We survey the empirical literature on the spillover effect in the production of knowledge and implement a meta-analytic regression. We discover that the average spillover effect is less than but close to one and is highly significant. We also find that the spillover effect tends to be greater when the estimation of knowledge production accounts for foreign inputs, and it tends to be lower when the estimation includes only rich economies, regional data are used, and the pool of knowledge is not the patent stock.  相似文献   

Can sit-to-stand muscle power explain the ability to perform functional tasks in adults with severe obesity?     

Samuel T. Orange  Phil Marshall  Leigh A. Madden  Rebecca V. Vince 《Journal of sports sciences》2019,37(11):1227-1234

This study examined the relationship between sit-to-stand (STS) power and physical function in adults with severe obesity. Thirty-eight adults (age: 44 ± 12 years; body mass index [BMI]: 45.2 ± 7.8 kg/m²) completed evaluations of STS power, strength and functional performance. STS power was measured with a wearable inertial sensor, strength was assessed with the isometric mid-thigh pull, and function was measured with the timed up-and-go (TUG), six-minute walk test (6MWT) and 30-s chair STS. Power and strength (normalised to body mass) entered regression models in addition to age, gender, BMI and physical activity (daily step count). Power displayed large univariate associations with TUG (r = 0.50) and 30-s chair STS (r = 0.67), and a moderate association with 6MWT (r = 0.49). Forward stepwise regression revealed that power independently contributed to TUG (β = ?0.40, p = 0.010), 30-s chair STS (β = 0.67, p < 0.001) and 6MWT performance (β = 0.27, p = 0.007). Power also appeared to be a superior determinant of function compared with strength. Power generated via the STS transfer largely underpins the ability to perform functional tasks in adults with severe obesity, although intervention studies are required to investigate a potentially causal relationship.  相似文献   

新常态下政府主导科技体制改革深化的阶段性研究     

黄宇 《科技管理研究》2018,(8)

根据新常态下国家中长期社会经济发展对科技创新的战略定位,立足宏观科技管理的基本规律,紧紧围绕科技与经济脱节的核心矛盾,具体阐述我国现行科技体制存在的问题及原因。在全面梳理党的十八大以来国家以转变政府职能和调整公共政策为抓手的系列关键举措及其成效基础上,从剖析现阶段科技体制改革深化的结构性本质入手,结合科技强国目标的实现,为后续工作的推进提出对策和建议。  相似文献   

锻炼对脑老化的影响及其机制          下载免费PDF全文

蒋长好  高志青  陈婷婷 《体育科研》2018,(3):65-70

当前我国老年人口快速增长，老年人是人口中的脆弱年龄群体，其大脑机能衰退，认知功能下降、老年痴呆的发病率也在逐年升高。因此，如何保持老年人认知和脑功能已成为近年心理学研究的重要问题。已有的行为研究表明，锻炼可以减缓老年人的认知功能衰退，提高执行功能；近年大量的脑影像研究发现，锻炼对老年人的大脑的结构和功能也有着可塑性影响。回顾了相关的研究进展，讨论了已有研究存在的不足，并提出未来相关研究需要深入探讨的问题。  相似文献   

A multi-nation examination of the fatigue and recovery time course during the inaugural Under-18 Six Nations rugby union competition     

Carlos Ramírez-López  Kevin Till  Thomas Sawczuk  Pierosario Giuliano  Alexis Peeters  Grant Beasley 《Journal of sports sciences》2020,38(6):644-651

  相似文献   

Improving cognitive and physical function through 12-weeks of resistance training in older adults: Randomized controlled trial     

Paulo Ricardo Pereira Dos Santos  Bruno Remígio Cavalcante  Andreya Karolyne Dos Santos Vieira  Marcos Duarte Guimarães  Antônio Marconi Leandro Da Silva  Anderson Da Costa Armstrong 《Journal of sports sciences》2020,38(17):1936-1942

ABSTRACT

We performed a randomized, controlled trial to analyse the effects of resistance training (RT) on cognitive and physical function among older adults. Fifty participants (mean age 67 years, ~60% woman) were randomly assigned to an RT program or a control group. Participants allocated to RT performed three sets of 10-15RM in nine exercises, three times per week, for 12-weeks. Control group did not perform any exercise. Variables included cognitive (global and executive function) and physical function (gait, mobility and strength) outcomes. At completion of the intervention, RT was shown to have significantly mitigated the drop in selective attention and conflict resolution performance (Stroop test: -494.6; 95%CI: -883.1; ?106.1) and promoted a significant improvement in working memory (digit span forward: -0.6; 95%CI: ?1.0; ?0.1 and forward minus backward: -0.9; 95% CI: ?1.6; ?0.2) and verbal fluency (animal naming: +1.4, 95%CI 0.3, 2.5). No significant between-group differences were observed for other cognitive outcomes. Regarding physical function, at completion of the intervention, the RT group demonstrated improved fast-pace gait performance (?0.3; 95% CI: ?0.6; ?0.0) and 1-RM (+21.4 kg; 95%CI: 16.6; 26.2). No significant between-group differences were observed for other mobility-related outcomes. In conclusion, RT improves cognitive and physical function of older adults.  相似文献