Fluid balance and hydration assessment during the weight-stable preparation phase in elite youth boxers

This study investigated (i) the prevalence of hypohydration and (ii) association between urinary indices of hydration status and confounding factors (e.g., urine protein content, water intake) in elite youth boxers during their weight-stable phase before competition. Sixteen national champion boxers (all male, 17 ± 1 y) were measured on 3 occasions (baseline, day 3, day 10), 30-day prior to competition. Body mass, total body water, urine specific gravity (USG), osmolality (UOSM) and total protein content (TPC) were evaluated to determine hydration status and fluid balance. Overall macronutrient and water intake were assessed using dietary records. Both UOSM and USG increased from day 3 to day 10 by 16% and 0.4% (P < 0.001), despite athletes being in their weight-stability period, and regardless of ad libitum fluid intake. Hypohydration was universally prevalent among all athletes on both test days with USG: 1.027 ± 0.003 g · mL^?1 and UOSM: 1035 ± 108 mOsmol · kg^?1. An inverse association between mean UOSM values and mean water intake was observed (R = ?0.52, P = 0.04), while TPC was not associated with any urinary dehydration markers (USG, P = 0.51; UOSM, P = 0.61). The present outcomes find that the most prevalent urinary dehydration markers used to classify hydration status in competition exhibit large variability, even during weight-stable periods.     

A knock to the system: A new sociotechnical systems approach to sport-related concussion

Broader contextual factors that influence concussion management have tended to be overlooked. To address this, the present study used a sociotechnical systems approach to identify perceived responsibilities and applied strategies for three domains of concussion management (i.e., prevention, identification and treatment). Participants were 118 members of the community rugby union system in Australia (69.2% male). Participants from throughout the rugby system (e.g., players, parents, coaches, club management) were asked open-ended questions about their perceived responsibilities and the strategies they use for concussion management. It was found that (a) proper training, technique correction and education were recurrent prevention themes; (b) the majority of key stakeholders felt that they could consistently identify concussion; however, medical aids (medics) were the only system actors who stated a responsibility to use standardised concussion assessment measures and (c) less than one third of the respondents indicated their involvement in treating concussion. This study identifies specific junctures in the system that prevents effective concussion management strategies. A sociotechnical systems approach improves the understanding of concussion prevention, and management beliefs and behaviours.     

‘The Winner Takes it All’: Values and Benefits of Israeli Sports Gambling Advertisements

Sports gambling is a well-established practice in Israel, whose beginnings can be traced to 1951. In recent years, the activities of the Israel Sports Betting Board (ISBB), also known as the ‘Toto Commission’, have become extremely popular with the public at large, and especially with sports fans. The study examines the changing advertising messages and creative appeals featured in the ISBB’s various advertising campaigns throughout Israeli history, and specifically the broad social meanings that can be inferred from these campaigns. The findings illustrate how significant structures of meaning in advertising function as reflections of the state of sports and society in Israel and as representations of some of the most salient phenomena in these domains. For example, for many years advertisements have been dominated by male presence, reflected primarily in the featured characters and language representations. Also prominent are representations of militarism as well as global biases, which are illustrated by the use of English in the local Israeli gambling brand name (‘Winner’), for example.     

Effect of a Brazilian Jiu-jitsu-simulated tournament on strength parameters and perceptual responses

This study aimed to analyse the effects of a simulated Brazilian jiu-jitsu (BJJ) tournament on vertical jump performance, grip strength test and perceived effort responses. 22 male BJJ athletes participated in a simulated tournament consisting of three 7 min matches separated by 14 min of rest. Kimono grip strength test (KGST), counter movement jump (CMJ) and rate of perceived exertion (RPE) were measured before and after each match, while RPE of specific areas was assessed after three matches. ANOVA for repeated measures was used to compare strength parameters after each match with the level of significance set at 5%. The key results showed a significant decrease of jump height (p = 0.001) and net vertical impulse in the CMJ (p = 0.031), as well as a reduction of the number of reps in the KGST (p < 0.001). A significant increase of RPE was found throughout the matches (p < 0.001). Considering the RPE in specific areas, no differences were observed between the upper and lower body (p = 0.743). We conclude that the BJJ simulated tournament generated a decrease of performance in both upper and lower limbs and provoked a progressive increase in the effort perception over the matches.     

河南省体育文化旅游及其资源的分类研究

采取文献资料、问卷调查、实地考察和逻辑分析等研究方法,深入挖掘河南省体育文化旅游资源,并对其进行分类研究.根据体育文化旅游可设项目的起源、功能等的不同,把河南省体育文化旅游划分为民俗节庆体育文化旅游、体育游戏文化旅游、武术养生体育文化旅游和古代军事体育文化旅游;根据资源内涵特点,把河南省体育文化旅游资源分舞蹈类、节庆表演类、武术类、竞技游戏类和戏兽类五种资源类型.     

第七届全国农运会与南阳体育产业发展研究

立足于南阳市体育产业发展现状,通过专家访谈和问卷调查对第七届全国农运会与南阳体育产业发展进行了深入的探讨和分析.结果认为第七届农运会将会极大地带动南阳市体育产业的发展,主要表现在体育用品业、体育健身娱乐业和体育文化旅游业三个方面.建议赛事组织管理部门在筹办举办全国农运会的同时,要兼顾体育事业和体育产业的协调发展.     

试论学校体育多元价值背后的人文关怀——兼论学校体育运动如何开展

体育的自然价值来自体育对人体培育和锻炼的生物性效果;社会价值在于它独有的培养、完善自我身心的过程;人文价值在于对人性的尊重和注重人格的充分发展.体育价值被充分认识,正是文化多元性的体现,标志着人类体育的发展目标日趋完善.青少年和儿童是体育价值观提升和展现的主力军,学校要有意识地利用丰富多彩的体育活动展现、辐射体育的文化价值.     

高校体育社会化服务现状分析——以宁波高校为例

在实地考察和广泛调研的基础上,对宁波市高校体育社会化服务现状进行了客观分析.高校虽有人才资源、体育场馆、信息科研等优势,但还存在着观念制约、管理体制制约等限制因素,在高校体育社会化服务发展的必然趋势下,提出了完善管理体制,体育资源社会化、加强高校与社区体育合作、多渠道融资等对策措施.     

河南省体育产业研究

体育产业是当今全球经济发展最快的产业．从世界发达国家和地区走过的路程看,发展体育产业是体育事业发展的必由之路．河南省作为全国第一人口大省,有深厚体育产业发展的人源市场．河南省体育产业要快速发展,首先要加快和完善河南省体育市场的法规体系建设,从战略高度制定一个长远的体育产业发展规划,把体育产业发展纳入法制化的轨道;其次,充分利用河南旅游资源,创造广阔的体育旅游大环境,最大限度地发挥其经济职能;再次,大力发展体育彩票业,支持体育事业健康快速发展．     

体育舞蹈在普通高等学校体育中开展的问题研究

文章从学校体育包括的体育课教学、课外体育活动和学校体育竞赛训练三方面,对体育舞蹈在普通高等学校开展过程中出现的相关问题进行了阐述。这些问题的出现势必制约体育舞蹈项目在高校中的发展,在中国的发展。