Well-being of cycling tourists in Hainan,China

Abstract

Bicycles are now gradually losing their attraction for utilitarian use, but in recent years, cycling for tourism and recreation has gained in popularity. However, the experiences and well-being involved in cycling tourism from a theoretical perspective have received little attention. This article intends to explore the relationships between cycling tourism and well-being by studying cyclists on Hainan Island in China. Interviews and participation observations were used to collect data. The types of cycling tourists were firstly identified and classified, followed by analysis of how the tourists obtained well-being through physical and social activities and their contexts. The study finds that human–bicycle relationships and China’s collectivistic culture play important roles in how cycling tourists obtain well-being. This study provides a mobility perspective on cycling tourism and well-being.     

体育舞蹈中常见运动损伤的原因及预防

近些年来,随着我国体育舞蹈的普及和竞技水平不断提升,体育舞蹈的教学和训练中舞者运动损伤时有发生,这不仅给舞者个人带来困扰,而且在一定程度上对体育舞蹈的整体发展产生消极影响。本文通过对陕西省8家体育舞蹈俱乐部的舞者们进行调查,找出了不同程度运动损伤的形成原因,并通过数据分析发现规律,最终提出解决的手段和方法。     

高校体育专业学生篮球运动中踝关节损伤的调查分析

踝关节损伤是篮球运动中常见的一种损伤。本文通过问卷调查对普通高校体育专业学生在篮球运动中踝关节损伤的类型、程度、原因等进行了调查,根据踝关节生理结构和篮球运动特点对损伤原因进行了研究,并对踝关节损伤的预防提出了合理的建议。     

Effects of magnitude and frequency of variations in external power output on simulated cycling time-trial performance

Abstract

Mechanical models of cycling time-trial performance have indicated adverse effects of variations in external power output on overall performance times. Nevertheless, the precise influences of the magnitude and number of these variations over different distances of time trial are unclear. A hypothetical cyclist (body mass 70 kg, bicycle mass 10 kg) was studied using a mathematical model of cycling, which included the effects of acceleration. Performance times were modelled over distances of 4–40 km, mean power outputs of 200–600 W, power variation amplitudes of 5–15% and variation frequencies of 2–32 per time-trial. Effects of a “fast-start” strategy were compared with those of a constant-power strategy. Varying power improved 4-km performance at all power outputs, with the greatest improvement being 0.90 s for ± 15% power variation. For distances of 16.1, 20 and 40 km, varying power by ± 15% increased times by 3.29, 4.46 and 10.43 s respectively, suggesting that in long-duration cycling in constant environmental conditions, cyclists should strive to reduce power variation to maximise performance. The novel finding of the present study is that these effects are augmented with increasing event distance, amplitude and period of variation. These two latter factors reflect a poor adherence to a constant speed.     

体育教学中常见伤病的预防和急救

体育教学过程中，由于教师和学生对预防伤病的意义认识不足，缺乏防范观念，缺乏正确的方法和组织，经验不足，造成学生的运动损伤和伤病，影响教学的正常进行。在总结多年教学实践经验的基础上，对体育教学中常见的几种伤病的产生原因、预防措施和急救方法进行了探讨，以期避免或减轻体育教学中常见伤病的发生。     

对体育系学生运动损伤的调查分析

对信阳师院体育系134名学生进行了运动损伤调查,结果表明男生的损伤发病率为75%,女生为46.2%.其损伤特点男生多是急性伤,女生多是慢性劳损伤,损伤呈多发性.造成学生受伤最多的运动项目依次为篮球、田径、足球、体操.建议学生要遵守课堂纪律,课前充分做好准备活动;教师要合理安排场地器材,注重研究教法.     

对武陵贫困山区大学生体育活动现状的调查与分析

通过问卷调查法、数理统计法对武陵贫困山区大学生的体育活动现状进行了调查与分析，结果表明，大部分大学生对体育认识程度较高，参与意识较强，但对学校早操制度、体育成绩考核办法、场馆建设、场馆开放等方面均不太满意。     

“用进废退”、“器官相关”与竞技体育运动员的早期培养

本交通过对食草动物和食肉动物消化系统的解剖学比较,提出应用“用进废退”法则对我国运动员进行始于婴幼期的饮食方式的改变,使消化系统在个体发育过程中退化,在体内所占的体积和重量减小,从而增加身体的启动、加速能力和机敏度。同时便与运动项目相关的运动器官在个体发育过程中得到充分生长,从而提高体能和运动效率。