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South African Journal for Research in Sport, Physical Education and Recreation最新文献

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Analysis of the effectiveness of the offensive game model in elite handball 分析精英手球运动中进攻游戏模式的有效性
Pub Date : 2023-12-10 DOI: 10.36386/sajrsper.v45i3.128
Iván González-García, Luis Casáis Martínez
The aim of the study was to identify the success variables associated with the level of efficiency established using an offensive game model during the second phase of the 2013 World Handball Championship for men in Spain. Sixteen matches were selected and 1925 units of observation were analysed, of which 8095 events were recorded using the HandballTAS tool (Handball Tactic Analysis System). The variables analysed to determine offensive effectiveness were individual actions, offensive punishment, degree of opposition, field area, location, numerical situation, and duration. The data were subjected to multivariate analysis in the form of binary logistic regression and classification tree. The classification and regression model correctly classified 81.6% of the dependent variables on offensive effectiveness (assist and numerical situation, p<0.05; field area and location, p<0.001). Offensive effectiveness increases with an assist (53%) and decreases with a shot from the wing-shots (53%), and with a 9-metre shot (65%) compared with a 6-metre shot. In respect of location, efficacy was reduced by 69% with shots in the middle zone of the goal when compared with shots in the lower zone. The probability of success was reduced by 49% in the warning of the passive play situation and 43% in the inferiority situation compared to the equality situation.
本研究旨在确定在 2013 年西班牙世界男子手球锦标赛第二阶段比赛中,与使用进攻比赛模型建立的效率水平相关的成功变量。研究选取了 16 场比赛,分析了 1925 个观察单元,其中使用 HandballTAS 工具(手球战术分析系统)记录了 8095 个事件。为确定进攻效果而分析的变量包括个人动作、进攻惩罚、对抗程度、场地面积、位置、人数情况和持续时间。数据采用二元逻辑回归和分类树的形式进行多元分析。分类和回归模型正确分类了 81.6% 有关进攻效果的因变量(助攻和数字情况,p<0.05;场地面积和位置,p<0.001)。与 6 米射门相比,助攻(53%)和翼侧射门(53%)以及 9 米射门(65%)的进攻效率都有所提高,而翼侧射门(53%)和 9 米射门(65%)的进攻效率则有所降低。就位置而言,在球门中区射门比在下区射门的效率降低了 69%。与平等情况相比,被动比赛情况下的警告射门成功概率降低了 49%,劣势情况下降低了 43%。
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引用次数: 0
Exploration and description of certified and non-certified rock climbers’ attitudes, perceived social pressures and control over certification 探索和描述认证和非认证攀岩者对认证的态度、感知到的社会压力和控制力
Pub Date : 2023-12-10 DOI: 10.36386/sajrsper.v45i3.290
Minette Strauss, Yolanda Stevens, T. Weilbach
The current lack of knowledge of certification by South African rock climbers often leads to unclear career paths and untrained and illegal guiding that can ultimately prove fatal. This study explored recreational and certified rock climbers’ attitudes regarding certification, social pressure to obtain certification and the extent of control over certification. A qualitative design was used to interview a total of 28 participants; 11 participants were Mountaineering Development and Training Trust (MDT) certified and five participants were South African Qualifications Authority (SAQA) qualified. The remaining 12 participants had no formal training and were non-certified. Data were collected in-person through semi-structured one-on-one interviews. The theory of planned behaviour was used as a theoretical framework to analyse the perceptions of rock climbers of certification in South Africa. The findings showed that the perceptions of non-certified rock climbers might be based on incorrect information. This may lead to certification being considered unnecessary when social pressure is not present. Furthermore, participants argued that only professional guides need proper training; in contrast, instructors teaching climbing did not need the same qualification. Ultimately, a change in the attitude of rock climbers towards the need for training could result in an internationally recognised South African rock-climbing industry with higher safety standards and fewer accidents.
目前,南非攀岩者对认证缺乏了解,往往导致职业道路不明确、未经训练和非法指导,最终可能导致死亡。本研究探讨了休闲攀岩者和认证攀岩者对认证的态度、获得认证的社会压力以及对认证的控制程度。本研究采用定性设计对 28 名参与者进行了访谈,其中 11 人获得了登山发展与培训信托基金(MDT)认证,5 人获得了南非资格认证局(SAQA)认证。其余 12 名参与者没有接受过正规培训,也没有获得认证。数据是通过半结构化一对一访谈收集的。计划行为理论被用作分析南非攀岩者对认证的看法的理论框架。研究结果表明,未获得认证的攀岩者的看法可能是基于不正确的信息。这可能导致在没有社会压力的情况下,认证被认为是不必要的。此外,参与者认为,只有专业向导才需要适当的培训;相比之下,教授攀岩的教练则不需要同样的资格认证。最终,改变攀岩者对培训需求的态度,可以使南非攀岩业得到国际认可,提高安全标准,减少事故发生。
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引用次数: 0
High school water polo talent development environments and team cohesion: 高中水球人才培养环境和团队凝聚力:
Pub Date : 2023-12-10 DOI: 10.36386/sajrsper.v45i3.275
Lwazi Nqa Madi, P. G. Fahlström, H. Grobbelaar
Organised school sport is integral to the development pathways of most South African sports. The highly competitive nature of inter-school leagues often prioritises short-term success over long-term player development. The study compared successful and less successful teams in various talent development environments (TDE) and team cohesion variables based on the log position of a high school’s tournament (u/15 and u/18 age-groups) and established correlations between these variables. A cross-sectional design was used, and 146 boys (average age: 15.51±1.23 years) completed the Talent Development Environment Questionnaire (TDEQ-5) and the Youth Sport Environment Questionnaire (YSEQ) before the 2020 Mazinter Cup. The top three u/18 teams had significantly higher TDEQ-5 (Overall), Alignment of Expectations, Support Networks, YSEQ (Overall Cohesion), Task Cohesion and Social Cohesion scores than the bottom three teams. The results underscore the well-established cohesion–performance relationship. There were no differences at the u/15 level, where players competed in this age-group for the first time. Moderately strong positive correlations existed between various TDEQ-5 and YSEQ variables. Fostering team cohesion is integral to successful TDEs. Long-term player development and team success can be pursued simultaneously.
有组织的学校体育是南非大多数体育项目发展途径中不可或缺的一部分。校际联赛的高度竞争性往往将短期成功置于球员的长期发展之上。这项研究比较了在各种人才培养环境(TDE)下成功的球队和不太成功的球队,以及基于高中联赛(u/15 和 u/18 年龄组)对数位置的球队凝聚力变量,并确定了这些变量之间的相关性。研究采用横断面设计,146 名男生(平均年龄:15.51±1.23 岁)在 2020 年马津特杯前完成了天赋发展环境问卷(TDEQ-5)和青少年体育环境问卷(YSEQ)。在 TDEQ-5(整体)、期望一致性、支持网络、YSEQ(整体凝聚力)、任务凝聚力和社会凝聚力得分方面,排名前三位的 18 岁以下球队明显高于排名后三位的球队。这些结果表明,凝聚力与成绩之间的关系已经确立。在首次参加该年龄组比赛的 15 岁以下组别中,没有出现差异。各种 TDEQ-5 和 YSEQ 变量之间存在中等程度的正相关。培养团队凝聚力是成功的 TDE 不可或缺的一部分。可以同时追求球员的长期发展和团队的成功。
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引用次数: 0
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South African Journal for Research in Sport, Physical Education and Recreation
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