Coordination and variability in the elite female tennis serve

Enhancing the understanding of coordination and variability in the tennis serve may be of interest to coaches as they work with players to improve performance. The current study examined coordinated joint rotations and variability in the lower limbs, trunk, serving arm and ball location in the elite female tennis serve. Pre-pubescent, pubescent and adult players performed maximal effort flat serves while a 22-camera 500 Hz motion analysis system captured three-dimensional body kinematics. Coordinated joint rotations in the lower limbs and trunk appeared most consistent at the time players left the ground, suggesting that they coordinate the proximal elements of the kinematic chain to ensure that they leave the ground at a consistent time, in a consistent posture. Variability in the two degrees of freedom at the elbow became significantly greater closer to impact in adults, possibly illustrating the mechanical adjustments (compensation) these players employed to manage the changing impact location from serve to serve. Despite the variable ball toss, the temporal composition of the serve was highly consistent and supports previous assertions that players use the location of the ball to regulate their movement. Future work should consider these associations in other populations, while coaches may use the current findings to improve female serve performance.     

Serving to different locations: set-up, toss, and racket kinematics of the professional tennis serve

The serve, as the most important stroke in tennis, has attracted considerable biomechanical interest. Of its component parts, the swing has received disproportionate research attention and consequently, little is known regarding toss kinematics. Indeed, the age-old question of whether players serve to different parts of the court from the same toss remains unanswered. Six right-handed professionally ranked players hit first serves (FSs) and second serves (SSs) to three 2 x 1 m target areas reflecting the landing locations of T, body and wide serves, respectively, on the deuce court. A 22 camera, 250 Hz VICON MX motion analysis system captured racket, ball, foot, and h and kinematics. Repeated measures ANOVAs assessed within-player differences in foot, racket, and ball kinematics within the FS and SS as a function of landing location. The positions of the front foot, ball zenith, and ball impact were significantly different in the FS, while kinematics across all SS were consistent. Front foot position was closer to the centre mark in the T FS and players impacted the ball further left in the wide FS compared to the T FS. This study discusses the findings in the context of the development of the serve as well as potential implications for the return.     

Student teachers' learning about subject matter and pedagogy in education for sustainable development

This article reports on an investigation of student teachers’ learning about education for sustainable development (ESD). Phenomenographic data were collected using open proformas and interviews from student geography teachers taking the University of Oxford Post‐Graduate Certificate in Education (PGCE) in 2003–2004. The data analysis focuses on what the cohort of student teachers perceived as their learning about ESD and the sources that contribute to it. Extracts from the data illustrate their conceptions of subject matter, regarding the relevance of sustainable development for school students, its complex and contested meanings, and the challenges it presents for learning and learners. Data on conceptions of pedagogy illustrate their depth of learning about the relationship between ESD subject matter and approaches and strategies in teaching and learning, and features of pedagogy that illustrate interactive teaching strategies. Various school and university‐based sources were identified by the student teachers as leading to specific aspects of learning about ESD, although many of the accounts illustrate a combination of sources. Implications of the findings for teacher education and research in ESD are also discussed.     

Making Connections

Science & Education - In-depth understanding of nature of science (NOS) moves beyond knowledge of discrete NOS aspects to consider connections among NOS aspects. This study presents three...     

Embodied Cognition: Somatic Markers, Purposes and Emotional Orientations

We describe the “somatic marker hypothesis” proposed by Damasio (1996) to account for the ability of most people to make decisions quickly and continually in the course of their lives. We relate this hypothesis to two other theoretical constructs, emotional orientations and purposes, which we have used in our research on students' reasoning and teachers' decision making. Given that somatic markers are a part of unconscious mental activity, they cannot be observed by introspective reflection. How then can we research something we cannot see? Beginning with the hypothesis that somatic markers influence actions, we observe, particularly, the actions of student teachers, teachers and children in mathematics classrooms at points where they make decisions. This process is illustrated through examples both of teaching and learning in mathematics, and through the account (see Op't Eynde and Hannula, this issue) of ‘Frank’ reflecting on his decision-making in mathematical activity. We use the case of Frank to illustrate some differences between viewing mathematical activity from our perspective and from those of some other contributors to this special issue. The connections between emotional orientations, somatic markers and purposes are further illustrated by two examples drawn from our research into teacher development and students' reasoning processes.     

Early Intervention for Behaviour Problems in Young Children with Developmental Disabilities

This article reviews research on intervention for young children with dual developmental and behavioural problems. It makes a case for intervention to include family variables and to occur in the preschool years. Behaviour problems are common in young children with developmental disabilities. If untreated these problems are likely to persist and become more challenging and severe in adulthood. Behaviour problems interfere with cognitive, social and emotional development, create additional family stress, often lead to exclusion from community services, and result in additional financial costs to the community. Intervention research provides some support for the effectiveness of parent management training and interventions based upon applied behaviour analysis. However, randomised controlled trials with adequate follow-up periods are required, along with the measurement of outcomes for the family as a whole.     

The experience of becoming a legal professional

Students intent on a career as a legal professional prepare for this through university study. The research reported in this paper looks at the clear relationships described by law students between the focus of their university study and their perceptions of the nature of work as a legal professional. We suggest that the current approach to teaching students of law requires some change to enable students to develop holistic approaches to learning in conjunction with a broadened perception of their future work.     

Writing film: making inferences when viewing and reading

This article discusses the ways in which short films on video might be integrated into the English curriculum. I argue that shorts can be used to scaffold writing, and further than this, that students can learn a great deal about narrative form by shuttling between the two media of print and film. The article focuses on a ‘worked example’, being an account of an INSET session using a short film called Father and Daughter.