Development of two short measures for recovery and stress in sport

The Acute Recovery and Stress Scale (ARSS) and the Short Recovery and Stress Scale were first established in German for the purposes of monitoring athletes’ current recovery-stress states in an economical and multidimensional manner. The aim of this paper is to document the development and initial validation of the English versions of these two psychometric monitoring tools. A total of 267 English-speaking athletes from a variety of team and individual sports participated in the study. The English versions demonstrated satisfactory internal consistency for both instruments (Cronbach α of .74–.89). Furthermore, good model fit was found for the eight scales of the ARSS, matching the structure and results of the German counterparts. Correlations among and between the scales reciprocate the theoretical constructs of stress and recovery, supporting the construct validity of the scales. Correlation coefficients within stress and recovery ranged between r_s?=?.29 and .68. The correlations between stress and recovery varied between r_s?=??.29 and ?.64. These constructs were further supported by correlations with the scores of the Recovery-Stress Questionnaire for Athletes, thereby showing convergent validity. The findings demonstrate initial validity and reliability of the two measures and reflect the results of the German versions. However, further research is needed before applying these scales in practical settings.     

Stressors, social support, and effects upon performance in golf

In this study, we extended the work of Rees and Hardy (2004) by examining the main and stress-buffering effects of social support upon sports performance in a different context, using a different outcome measure, and a specific time-frame. A high-level performance sample of 117 male golfers (mean age 24.8, s = 8.3) completed measures of social support and stressors before competitions. Performance outcome was recorded. Moderated hierarchical regression analyses revealed significant (P < 0.05) main effects for stressors upon performance in 8 of the 11 models tested (R2 = 0.08 - 0.21). Over and above the variance accounted for by stressors, there were significant (P < 0.05) main effects for social support upon performance in all models tested (DeltaR2 = 0.10 - 0.24). In all models, stressors were associated with worse performance, whereas social support was associated with better performance. There were no significant interactions (stress-buffering effects). Main effects for social support upon performance suggest that social support may have aided performance directly, regardless of the level of stress.     

Main and interactive effects of attribution dimensions on efficacy expectations in sport

In this study, I examined the main and interactive effects of attribution dimensions on efficacy expectations in sport. A sample of 162 athletes (102 males, 60 females) aged 20.9 years (s = 3.4) from various sports were recruited. The participants, who were of club to international standard, completed the Causal Dimension Scale II (McAuley et al., 1992) in relation to their most recent performance. They then completed a 7-item measure of efficacy expectations in relation to their upcoming performance. The key predictors of efficacy expectations were stability and personal control, but their function differed after more or less successful performances. After more successful performances, attributions to stability and personal control were associated with main effects upon efficacy expectations, in a positive direction; after less successful performances, attributions to stability and personal control were associated with an interactive effect upon efficacy expectations. The form of this effect was such that the participants were more likely to have high efficacy expectations only when they viewed the cause of their performances as both personally controllable and stable.     

Is too much help an obstacle? Effects of interactivity and cognitive style on learning with dynamic versus non-dynamic visualizations with narrative explanations

Educational technology research and development - The aim of this study was to investigate the role of visual/verbal cognitive style and interactivity level in dynamic and non-dynamic multimedia...     

Constructing an Entrepreneurial Architecture: An Emergent Framework for Studying the Contemporary University Beyond the Entrepreneurial Turn

Universities are engines of the knowledge-based economy, both as sites of knowledge production and exploitation. Over the past two decades a “Third Mission” for universities has been articulated, alongside teaching and research; and this third mission is understood as commercial engagement. While growing literatures on the entrepreneurial university and university entrepreneurship have emerged, they are broadly conceptualized and overly fragmented. In this article we advance the concept of entrepreneurial architecture as an analytical framework to understand the organizational dynamics of the contemporary university and fuse two dominant discourses on the entrepreneurial evolution of higher education. We offer a pragmatic approach for institutions to respond to the challenges of the Third Mission.     

Occupying a ‘third space’: research trained professional staff in Australian universities

Despite the expansion and professionalisation of university administration over the past 20 years there has been no scholarly study on the extent to which universities, which promote the value of generic skills from research degrees to prospective research students and their employers, capitalize on the research and transferable skills of PhD graduates later employed in the university sector as professional staff. Findings from this study of research-trained professional staff at one research-intensive Australian university suggests that these professionals are using their research and generic skills in management roles, to the benefit of the university. In the context of the knowledge based economy, this study suggests that universities could benefit from actively targeting the products of their own system for professional roles.     

再谈“屯堡重塑”——与宋茨林先生商酌

2008年宋茨林先生针对我们主编的论文集《屯堡重塑》在《安顺学院学报》2008年第一期发表了一篇题为"是历史遗存还是现代包装?——《屯堡重塑》中的热点和冰点"的文章,文章是对该文的回应。借助这次回应,文章再次阐述了"文化重塑"这一概念的内涵,再次强调了作为文化旅游资源的文化的保护是文化旅游可持续发展的关键。     

Skill qualities as risk factors for contact injury in professional rugby league players

Abstract We investigated the relationship between skill qualities and contact injury risk in professional rugby league players. Sixty-six professional rugby league players aged 23?±?4 years (mean?±?s) participated in this three-year prospective study. Players underwent assessments of tackling proficiency, dual-task draw-and-pass proficiency, reactive agility, pattern recall, and pattern prediction. The frailty model was applied to calculate the adjusted risk ratios of injury. When the players' age and playing position were adjusted in the frailty model, the risk ratios showed that reactive agility was a predictor for the risk of injury. Players with reactive agility decision times of >80?ms had a lower incidence (relative risk?=?0.68, 95% CI 0.47-0.98, P?=?0.04) of injuries than players with reactive agility decision times of ≤80 ms. Although there was no relationship between injury and the majority of skill qualities (P?=?0.47-0.93), players with poor reactive agility performances (specifically longer decision times) had a lower risk of injury, suggesting that poor perceptual skill is protective against contact injuries in professional rugby league players. These players might inadvertently avoid the heavy collisions that result in injury, or at best result in partial contact that does not result in exposure to the full force of a tackle.     

Straight sprinting is the most frequent action in goal situations in professional football

The present study aimed to analyse the influence of speed and power abilities in goal situations in professional football. During the second half of the season 2007/08, videos of 360 goals in the first German national league were analysed by visual inspection. For the assisting and the scoring player the situations immediately preceding the goal were evaluated. The observed actions were categorised as: no powerful action, rotation (around the body's centre-line), straight sprint, change-in-direction sprint, jump, or a combination of those categories. Two hundred and ninety-eight (83%) goals were preceded by at least one powerful action of the scoring or the assisting player. Most actions for the scoring player were straight sprints (n = 161, 45% of all analysed goals, P < 0.001) followed by jumps (n = 57, 16%), rotations and change-in-direction sprints (n = 22, 6% each). Most sprints were conducted without an opponent (n = 109, P < 0.001) and without the ball (n = 121, P < 0.001). Similarly, for the assisting player the most frequent action was a straight sprint (n = 137, P < 0.001) followed by rotations (n = 28), jumps (n = 22) and change-in-direction sprints (n = 18). The straight sprints were mostly conducted with the ball (n = 93, P = 0.003). In conclusion, straight sprinting is the most frequent action in goal situations. Power and speed abilities are important within decisive situations in professional football and, thus, should be included in fitness testing and training.