It''''s a small world

┌────┬────┐ ┌─┐ │舅 │l巍馨瓤.│ │蕊│ │幸后 │颧共 │ └─┘ │摧撰 │ │ └────┴────┘ ┌───┐┌───┬─────┐ │杯竺! ││露 │省 │ │截呀} │┌────┐│嗯盛 │ │ │矍 ││…颤黝 ││么映吵│ │ │ │└────┘│片考 │ ┌───┤ │ ││理邃 │ │「,. │ │ ││月澎旦│ ├───┤ │ ││.尸拓 │ │ │ │ ││匕‘日│ │ │ │ │└───┴─┴───┘ └───┘It's a small world~~…     

Physiological load associated with a Zumba® fitness workout: a comparison pilot study between classes and a DVD

The objectives were to compare the metabolic load elicited by Zumba^® classes and DVD workouts and link the physiological responses to participants’ psychological characteristics. Fifteen women (25.4 ± 4.3 years old; 164.9 ± 5.1 cm; 56.9 ± 5.8 kg; 23.9 ± 4.9% body fat) performed three Zumba^® classes and three Zumba^® DVD workouts using a repeated measure design. Energy expenditure was assessed by extrapolating oxygen cost from heart rate (HR) using regressions from a preliminary incremental running test. Differences between Zumba^® classes and Zumba^® DVD workouts were assessed by Student’s T tests and repeated measures analysis of variance and correlations between physiological and psychological variables by the Pearson’s coefficient. Results showed that Zumba^® classes allowed greater energy expenditure compared to Zumba^® DVD workouts (6.8 ± 0.9 vs 5.6 ± 0.9 kcal · min^?1, 95% confidence interval (CI) limits: 0.3–2.1, P = 0.016), with significant differences in the time spent with a HR above 85% of HR reserve (14.7 vs 1.7%, 95% CI: 5.6–20.4, P = 0.021). Furthermore, women with a greater autonomy score showed a smaller difference between DVD and class (r = 0.511, P = 0.048), while greater differences were shown in women with greater interpersonal skills (r = ?0.563, P = 0.028). The results suggest that while both types of workouts are suitable to maintain fitness Zumba^® classes allow greater energy expenditure.     

Tensions in stakeholder relations for a Swedish football club – a case study

Swedish football is an industry not yet being as commercial as the big leagues and is regulated in terms of ownership of clubs. This implies a need for management of stakeholder relations for a Swedish football club. This paper identifies important stakeholders in Swedish football and discusses the multitude of – sometimes conflicting – objectives in managing these relations. The empirical base of the study is founded in a case study of Malmö FF, one of the dominant clubs in Sweden, with a qualitative single case research approach. Data are collected by means of semi-structured interviews and participant observations. The results of the study show a number of tensions as paradoxes for stakeholder management, suggest management dispositions to reconcile these paradoxes and suggest areas for further research.     

SHEN,a good-hearted association

本期学生来稿的稿件是由来自法国巴黎东部马恩河谷大学(Paris-Est Mame La Vallee)的学生Boulom Sengkham提供,介绍的是"申"社团,这究竟是个什么样的组织?且看下文。     

Elite refereeing structures in England: a perfect model or a challenging invention?

The structure employed in England for referees and elite referees is something which has evolved as the game of Association Football has developed over time. This referee promotion, support and management system has changed more rapidly since the inauguration of the Premier League and latterly since the introduction of ‘full-time’ or ‘professional’ referees. The change in the promotion and support for elite referees has necessitated changes to that management structure at the elite level in particular. This article has utilized historical research to analyse the changes to these structures alongside semi-structured interviews as a means of analysing this evolving network for elite referees. Findings indicate that support for the changes which have occurred in elite refereeing regarding the establishment of ‘full-time’ referees are opposed, with alternating views also encompassing the current structure employed for managing elite referees in England and the pathways utilized for referee promotion.     

How does a physical education teacher become a health and physical education teacher?

The purpose of this study is to explore what the role of a health and physical education (HPE) specialist teacher in the primary school entails. The new Australian Curriculum: HPE Framework requires schools and teachers to implement the HPE key learning area. Many self-perceived physical education (PE) teachers have voiced concern about not knowing how they go about this. This research investigates ‘How PE teachers best become HPE teachers?’ We are reminded by Kirk that this is not the first time teachers have implemented this very change in Australia. Many similarities can be drawn between the recent national Australian Curriculum: HPE and the 1994 HPE National Statement and Profile, which provided a foundation for the construction of the 1999 Queensland HPE (P-10) Syllabus. As recommended by Kirk this study ‘look[s] to the past for lessons about the present and where we might be heading in the future’, by investigating school responses to the 1999 Queensland HPE (P-10) syllabus and curriculum documents. Within the constructionist paradigm, an interpretivist study was conducted. The methodology chosen to construct meanings through capturing the context of each school was ‘evaluative’ and ‘multiple’ case study. The sites for the three case studies involved: one small; one medium; and one large-sized Brisbane Catholic Education primary school. The three case studies were selected as representative of different demographics and the methods engaged so as to enable precision of details were semi-structured interviews, reflective journal, observations and document analysis. Data gathered suggest that enacting the HPE key learning area is very achievable. Implementation is enhanced by HPE leadership, underpinned by clear communication. More so, barriers can be overcome through professional development and support. This study is significant nationally, and the findings may be of wider international interest. It models how school leaders can optimise the health opportunities within their context and models how PE teachers can become HPE teachers.     

Dominant–non-dominant asymmetry of kicking a stationary and rolling ball in a futsal context

The aim of this study was to analyse the characteristics of the asymmetries in the dominant and non-dominant limbs when kicking stationary and rolling balls. Ten experienced Brazilian amateur futsal players participated in this study. Each participant performed kicks under two conditions (stationary ball vs. rolling ball) with the dominant and non-dominant limbs (five kicks per condition per limb). We analysed the kicking accuracy, ball and foot velocities, angular joint displacement and velocity. The asymmetry between the dominant and non-dominant limbs was analysed by symmetry index and two-way repeated measures ANOVA. The results did not reveal any interaction between the condition and limb for ball velocity, foot velocity and accuracy. However, kicking with the dominant limb in both kicks showed higher ball velocity (stationary ball: dominant – 24.27 ± 2.21 m · s^?1 and non-dominant – 21.62 ± 2.26 m · s^?1; rolling ball: dominant – 23.88 ± 2.71 m · s^?1 and non-dominant – 21.42 ± 2.25 m · s^?1), foot velocity (stationary ball: dominant – 17.61 ± 1.87 m · s^?1 and non-dominant – 15.58 ± 2.69 m · s^?1; rolling ball: dominant – 17.25 ± 2.26 m · s^?1 and non-dominant – 14.77 ± 2.35 m · s^?1) and accuracy (stationary ball: dominant – 1.17 ± 0.84 m and non-dominant – 1.56 ± 1.30 m; rolling ball: dominant – 1.31 ± 0.91 m and non-dominant – 1.97 ± 1.44 m). In addition, the angular joint adjustments were dependent on the limb in both kicks (the kicks with non-dominant limb showed lower hip external rotation than the kicks with the dominant limb), indicating that the hip joint is important in kick performance. In conclusion, the kicks with the non-dominant limb showed different angular adjustments in comparison to kicks with the dominant limb. In addition, kicking a rolling ball with the non-dominant limb showed higher asymmetry for accuracy, indicating that complex kicks are more asymmetric.     

Becoming a ‘good coach’

The purpose of this paper was to gain insight into how coaches problematized their coaching practices and the process in which they engaged to become what they perceived to be better coaches using a course based on critical reflective practice. We assumed that constant critical self-reflection would enable coaches to move closer to their individual idea of a ‘good coach.’ Scholars and coaches collaborated to develop course content. The course was built on principles of rational-emotive education. We drew on Foucault's conceptualization of self-constitution or modes of subjectivation and confessional practice and Knaus' approach to teaching for our analytical framework. Thirty-five coaches participated in this study. The data consisted of semistructured interviews, field notes, open-ended questionnaires and focus group. The results are presented per mode of change or transformation. We explored how coaches wanted to transform their coaching practice (ethical substance), how they defined a good coach (mode of subjection), how they worked on change (ethical work) and how they transformed themselves (telos). To gain further insight into this process, we also examined narratives of three coaches as they described why and how they changed. The practice of critical reflection seemed to meet the needs of the coaches involved in the study. They used it to continually examine their behavior and their normalized taken-for-granted beliefs and to transform themselves in the direction of their idea of a ‘good coach.’ Ontological reflection was seen as a tool and a process that requires continual practice.     

How to be a shooting star

保罗·皮尔斯,波士顿凯尔特人队。全明星周末上曾有人问过皮尔斯谁是联盟中最杰出的投手,保罗思量半晌,回答道:“佩加·斯托贾科维奇。”尽管皮尔斯一向是以他最具价值的投篮而著称于世的。他的前队友,现在已经转到达拉斯小牛队的安东尼·沃克则以投篮的数量见长.与他相比皮尔斯则更重视投篮的质量。如果保罗把注意力邵集中的投篮的命中率上、那么凯尔持人几乎是不可战胜的。本赛季当皮尔斯的投篮命中军在50%以上的比赛平、凯尔特人的战绩是22胜6负, 史蒂夫·史密斯.新奥尔良黄蜂队。作为前马刺队的冠军球员,史密斯承认他惊人的三分球赢中率…     

Measurement of contact forces on a kayak ergometer with a sliding footrest–seat complex

Kinematic analysis is done by measurement of the position of bodies, followed by differentiation to get the accelerations of the centres of mass, and it is widely used in sport research. Another common approach is to measure the forces directly. Our intention here is to perform both a kinematic and a kinetic analysis of the same athlete-equipment system, in this case an athlete on a sliding kayak ergometer, with the aim of exploring the errors that may occur with each measurement type. The kayak ergometer with a sliding trolley, instrumented by seven uniaxial force sensors and two goniometers, was placed in a filming area. The instrumentation was validated in the direction of the anteroposterior axis using Newton’s second law. Ten athletes paddled at 92 strokes per minute, following a stationary phase. The comparison between the net force and the time-derivative of the linear momentum indicated a friction level of about 20 N between the trolley and the frame. Other errors came mainly from the inertial parameters of the trunk. A first analysis of contact forces shows a large inter-subject variability, in particular for the forces applied to the footrest and the seat.     

The impact of impairment on kinematic and kinetic variables in Va’a paddling: Towards a sport-specific evidence-based classification system for Para Va’a

ABSTRACT

Para Va’a is a new Paralympic sport in which athletes with trunk and/or leg impairment compete over 200 m. The purpose of this study was to examine the impact of impairment on kinematic and kinetic variables during Va’a ergometer paddling. Ten able-bodied and 44 Para Va’a athletes with impairments affecting: trunk and legs (TL), legs bilaterally (BL) or leg unilaterally (UL) participated. Differences in stroke frequency, mean paddling force, and joint angles and correlation of the joint angles with paddling force were examined. Able-bodied demonstrated significantly greater paddling force as well as knee and ankle flexion ranges of movement (ROM) on the top hand paddling side compared to TL, BL and UL. Able-bodied, BL and UL demonstrated greater paddling force and trunk flexion compared to TL, and UL demonstrated larger bottom hand paddling side knee and ankle flexion ROM compared to BL. Significant positive correlations were observed for both male and female athletes between paddling force and all trunk flexion angles and ROM in the trunk and pelvis rotation and bottom hand paddling side hip, knee and ankle flexion. The results of this study are important for creating an evidence-based classification system for Para Va’a.     

Training the inspiratory muscles improves running performance when carrying a 25 kg thoracic load in a backpack

Load carriage (LC) exercise in physically demanding occupations is typically characterised by periods of low-intensity steady-state exercise and short duration, high-intensity exercise while carrying an external mass in a backpack; this form of exercise is also known as LC exercise. This induces inspiratory muscle fatigue and reduces whole-body performance. Accordingly we investigated the effect of inspiratory muscle training (IMT, 50% maximal inspiratory muscle pressure (P_Imax) twice daily for six week) upon running time-trial performance with thoracic LC. Nineteen healthy males formed a pressure threshold IMT (n?=?10) or placebo control group (PLA; n?=?9) and performed 60?min LC exercise (6.5?km?h^–1) followed by a 2.4?km running time trial (LC_TT) either side of a double-blind six week intervention. Prior to the intervention, P_Imax was reduced relative to baseline, post-LC and post-LC_TT in both groups (pooled data: 13?±?7% and 16?±?8%, respectively, p?P_Imax increased +31% (p?TT (+18%, p?P_Imax at each time point was unchanged (13?±?11% and 17?±?9%, respectively, p?>?.05). In IMT only, heart rate and perceptual responses were reduced post-LC (p?p?相似文献   

How to be a true man?

~~How to be a true man?~~     

Teachers’ Perceptions of a Fundamental Movement Skill (FMS) Assessment Battery in a School Setting

Fundamental movement skills (FMS) competence is low in adolescent girls. An assessment tool for teachers is needed to monitor FMS in this demographic. The present study explored whether the Canadian Agility and Movement Skill Assessment (CAMSA) is feasible for use by physical education (PE) teachers of Australian Year 7 girls in a school setting. Surveys, focus group interviews, and direct observation of 18 specialist PE teachers investigated teachers’ perceptions of this tool. Results indicated that the CAMSA was usable in a real-world school setting and was considered a promising means to assess FMS in Year 7 girls. However, future iterations may require minor logistical alterations and further training for teachers on how to utilize the assessment data to enhance teaching practice. These considerations could be used to improve future design, application, and training of the CAMSA in school-based PE.     

Is hockey just a game? Contesting meanings of the ice hockey life projects through a career-threatening injury

This study is situated within an existential–narrative theoretical framework to examine the impact of career-threatening injury on professional ice hockey players’ well-being and career construction. Professional ice hockey culture is construed as a privileged space characterised by hegemonic masculinity, fierce competition as well as high-risk behaviours often resulting in sports injuries. In this paper, we analyse two players’ life stories with a particular focus on injury as a boundary situation involving social and temporal breakdown and re-evaluation of meaning of sporting life projects. Emergent narratives surrounding existential themes of loss of meaning and loneliness in the face of injury were analysed in connection with players’ search for authenticity and realignment with self-concept. Each player developed resistant narratives to the dominant ethos of professional sport in order to restore well-being and sense of self. The relational aspects of injury are highlighted in practical recommendations.     

From a pub game to a sporting spectacle: the professionalisation of British Darts, 1970–1997

ABSTRACT

Various sport scholars have noted the transition of sports from amateur leisure pastimes to professionalised and globalised media sporting spectacles. Recent developments in darts offer an excellent example of these changes, yet the sport is rarely discussed in contemporary sports studies. The only sustained theoretical research on darts focuses primarily on the origins of the sport in its nostalgic form as a working-class, pub taproom pastime in England. This article critically examines the transformation of darts from a leisurely game to a professional sport between the 1970s and the 1990s. The change was enabled by the creation of the British Darts Organisation (BDO) and the introduction of television broadcasting, which together fed a continual process of professionalisation. Initially, this article discusses both the concept of professionalisation and similar developmental changes in a selection of English sports. Following this, via selected interviews, documentary analysis and archival information, the reasons behind the split in darts are explicated, shedding light on how the BDO did not successfully manage the transformation and the sport split into two governing bodies, from which the Professional Darts Corporation (PDC), the sport’s most successful organisation in the present day, has emerged to dominate the world of televised darts.