排序方式： 共有100条查询结果，搜索用时 15 毫秒
1.
Mirva Rottensteiner Sara Mäkelä Leonie H. Bogl Timo Törmäkangas Jaakko Kaprio Urho M. Kujala 《European Journal of Sport Science》2017,17(9):1184-1193
Purpose: The benefits of physical activity (PA) in preventing abdominal obesity are well recognized, but the role of different sport disciplines remains open. We aimed, therefore, to investigate how participation in different sport disciplines, and the number and types of sports engaged in are associated with waist circumference (WC) in young adulthood. Methods: This population-based cohort study comprised 4027 Finnish twin individuals (1874 men), with a mean age of 34 y (32–37), who answered a survey, including self-measured WC. We extracted the number and identified the types (aerobic, power, and mixed) of the different sport disciplines respondents reported participating in. Results: The number of sport disciplines participated in was inversely associated with WC, the linear decrease averaging 1.38?cm (95% CI 1.10–1.65) per each additional sport discipline. The result persisted after adjustment for the main covariates, such as volume of PA and diet quality. Among dizygotic twin pairs discordant for sports participation (0–2 vs. 5 or more disciplines), the mean within-pair difference in WC was 4.8?cm (95% CI 0.4–9.1) for men and 11.2?cm (95% CI 4.4–18.0) for women; among discordant monozygotic pairs, no differences were observed. In men, all three types of sports were individually associated with smaller WC, while in women, only mixed and power sports showed this association. Conclusions: Participation in several sport disciplines and sport types was associated with smaller WC among young adults in their mid-30s. Shared genetic background may explain some of the associations. 相似文献
2.
王维芬 《六盘水师范高等专科学校学报》2004,16(3):76-77
在进行"面积和周长的对比"的教学时,将重、难点部分运用powerpoint制作成为课件进行教学,与传统教学模式对比,前者的教学效率比后者有很大提高. 相似文献
3.
林辉 《吉林体育学院学报》2007,23(4):140-141
腰腿功是太极拳运动中最基本也是最关键的技术,在教学训练中合理建立腰腿功的练习模式,不但可以提高太极拳演练水平,而且对医疗保健也有很重要的参考价值. 相似文献
4.
Suparna Dhara Anindya Dasgupta Jayanta Kumar Rout Ushasi Banerjee Sayantan Dasgupta Arindam Ghosh 《Indian journal of clinical biochemistry : IJCB》2015,30(1):99-103
Psoriasis is a chronic inflammatory disease associated with an increased insulin resistance, obesity and cardiovascular risk. The present study was aimed to assess insulin resistance and pattern of body fat deposition in psoriasis. Body mass index (BMI) and waist circumference (WC) were measured in 40 psoriatic patients and 46 age- and sex-matched control subjects. Fasting blood glucose (FBG) and serum insulin level were measured by standard photometric method and ELISA respectively. HOMA-IR (homeostatic model of insulin resistance) was calculated by appropriate software. The results indicated that case and control groups were comparable in terms of age and sex (p = 0.934) with an increased prevalence of psoriasis among male subjects (60 %). FBG and mean WC between the two groups were statistically not significant (p value = 0.271 and 0.21 respectively). BMI was significantly higher in case group compared to the control group (p = 0.049). Serum insulin level and insulin resistance in the psoriatic patients were significantly higher (p value <0.001). Multiple regression analysis revealed that insulin resistance (measured by HOMA) was dependent on BMI and WC at a significance level of p < 0.001 and 0.043 respectively. Therefore, the psoriatic patients in this region have significantly high amount of fasting serum insulin level along with an increased IR though their FBG level remains normal. Furthermore, these abnormalities are significantly dependent on total body fat as well as abdominal fat deposits. We suggest that psoriatic patients need to be evaluated for metabolic syndrome and managed accordingly. 相似文献
5.
吴维煊 《广东教育学院学报》2014,(3):86-92
圆周率是一个在数学及物理学中经常要用到的数学常数.圆周率的计算与研究过程,不仅蕴含着数学文化的浓浓气息,其产生的深刻影响也渗透到人类文化诸多领域,对数学文化及人类文化的发展有着不可低估的影响,还为数学文化的研究提供了重要的方法和手段. 相似文献
6.
俞万宝 《山西师大体育学院学报》1995,(1)
标枪训练与教学中发生腰部损伤的人次较多,它的发生与技术训练有密切关系,根据运动解剖学和生物学知识,抓好基本技术训练,及时纠正错误动作,是避免和减少腰部损伤发生的关键。 相似文献
7.
摩登舞技巧中最重要的环节是控制身体重心的不断转换,整个形体在惯性中移动,形成移动惯性流量。形体移动惯性流量的形成,关键在于身体躯干在中枢神经系统的控制下,由肌肉收缩牵引骨骼来带动腿脚移动实现重心移动到位。在此过程中,身体躯干主导着重心转移,腰胯稳固形成移动的枢纽,脚底联动实现重心的平衡转移。 相似文献
8.
数学史上关于圆的度量和圆周率的推算，是中小学数学教学中十分有价值的史料，但对这一数学史实的认识有许多模糊的地方，运用与中学数学教学有关的例证澄清这一数学史实，给数学教学以重要启示：关于圆周率的教育价值应得到充分挖掘和客观体现。 相似文献
9.
毕玉凤 《唐山师范学院学报》2005,27(2):47-48
对竖直平面内圆周运动的临界速度进行了讨论，并对没有支撑物的物体在竖直面内做圆周运动的临界问题、有支撑物的物体在竖直面内做圆周运动、特殊条件下的物体在竖直面内做圆周运动的临界问题分别进行了举例分析。 相似文献
10.
通过对西安体育学院不同专项44名学生进行“纵跳”测验进而对爆发力进行测量。通过测量纵跳高度、肌围度、足弓形态，来分析其各项指标之间的关系及其对爆发力的影响。 相似文献