Golf styles and centre of pressure patterns when using different golf clubs

Abstract

When using a driver, the centre of pressure of a golfer shows a pattern that is characteristic of one of two distinct swing styles: the “front foot” style or the “reverse” style. The aim of this study was to establish whether these two swing styles are also evident when using other clubs, and if so, to determine whether golfers use the same swing style when using different clubs. Forty-six professional, amateur, and recreational golfers performed swings to hit a ball into a net placed 3 m away. Ten swings were performed for each of the driver, 3-iron, and 7-iron while standing on two force plates. The position of the golfer's centre of pressure parallel with the line of shot and relative to the feet was quantified at eight swing events that were identified from 200-Hz video. Cluster analysis confirmed that the front foot and reverse styles were evident in all three clubs, and most of the golfers (96%) used the same swing style for all three clubs. Golfers that used the reverse swing positioned their centre of pressure nearer to their toes at ball contact compared with golfers that used the front foot swing.     

Word learning: An ERP investigation of word experience effects on recognition and word processing

Adults of varying reading comprehension skill learned a set of previously unknown rare English words (e.g., gloaming) in three different learning conditions in which the type of word knowledge was manipulated. The words were presented in one of three conditions: (1) orthography-to-meaning (no phonology); (2) orthography-to-phonology (no meaning); and (3) phonology-to-meaning (no orthography). Following learning, participants made meaning judgments on the learned words, familiar known words, and unpresented (unlearned) rare words while their ERPs were recorded. The behavioral results showed no significant effects of comprehension skill on meaning judgment performance. Contrastingly, the ERP results indicated comprehension skill differences in P600 amplitude; high-skilled readers showed stronger familiarity effects for learned words, whereas less-skilled readers did not distinguish between learned words, familiar words, and unlearned words. Evidence from the P600 and N400 illustrated superior learning of meaning when meaning information was coupled with orthography rather than phonology. These results suggest that the availability of word knowledge (orthography, phonology, and meaning) at learning affects subsequent word identification processes when the words are encountered in a new context.     

Senior Citizens Who Use E-mail

Increases in the aging population and use of computer-related technology have spawned research regarding older adults' use of the Internet. This study examined characteristics differentiating rural Midwestern senior citizens (N = 298) who use e-mail from those who do not. Compared to those who did not use e-mail, e-mail-using seniors were younger and wealthier, less likely to report health-related limitations, and more likely to report being able to do things independently. Given the potential benefits associated with use of the Internet, results of studies such as this could help in identifying factors associated with successful aging.     

Comprehensive Student Profiling: Furthering Academic and Pastoral Care Objectives

Comprehensive student profiling is described as an alternative to exclusively teacher-controlled, academic subject focused records of students' progress. Features of profiling that are highlighted include its multidimensionality, participatory nature, and formative and summative functions. The rationale for adopting comprehensive student profiling rather than relying only on discrete, norm-referenced performance evaluations is discussed with reference to the historical innovation and eventual nation-wide adoption of profiling in British schools and the developmental objectives of the pastoral care movement in Singapore schools.     

Writing and Dialogue In,and Around,a Senior Secondary Literature Classroom

The tradition of teachers engaging in narrative-based inquiry is now well established, as is its value for creating situated knowledge about teaching. This reflexive autobiographical article weaves together narrative accounts around a senior literature classroom environment. The article features two voices: a teacher (Natalie Bellis) and a Year 12 literature student (Jessica Garcia). Through this process of narrative inquiry, the teacher reflects on her experiences of exploring literary texts with senior students within a landscape of high-stakes assessment. In this way, the teacher engages with Dorothy Smith’s notion of ‘writing the social’, by using narrative to illuminate and critically inquire into the lived experience of teaching and learning. The motif, or thread, that binds these three narrative accounts is the act of letter-writing, which serves as a metaphor for the foregrounding of the personal within a context that is shaped by external forces that can result in conformity and generality. This tension between the ‘local actualities’ of experiences and the institutional structures that govern them is theorised using de Certeau’s metaphor of the city map.     

Reliability of power output measurements during repeated treadmill sprinting in rugby players

The non-motorized treadmill system initially reported by Lakomy in 1984 has been used extensively to assess sprinting performance. However, there has been limited research into the reliability of power output measurement using such systems. The aim of this study was to design a system and protocol capable of measuring treadmill sprinting performance in rugby players and to assess the reliability of this system for measuring power output. Twenty-seven rugby players, all of whom were familiar with treadmill sprinting, performed three maximal 6 s sprints with 2 min recovery between sprints, on two occasions 1 week apart. Both tests were performed on a non-motorized Woodway tramp treadmill, interfaced to a data acquisition system. There were no significant differences (P > 0.05) between power output for repeated trials on the same day (between trials) or for repeated trials on different days (between days). Limits of agreement for maximum average power (the average of 100 readings per second) were 4+/-98 and 30+/-157 W for between trials and between days, respectively. When reported as ratio limits of agreement, these were 1.07 (*/divided 1.12) and 1.03 (*/divided 1.16), respectively. The limits of agreement for maximum instantaneous power (the highest of 100 readings per second) were 51+/-464 and 105+/-588 W for between trials and between days, respectively. When reported as ratio limits of agreement, these were 1.02 (*/divided 1.20) and 1.04 (*/divided 1.21) for between trials and between days, respectively. The coefficients of variation for all measures of power output were less than 9.3%. Hence, the treadmill system and protocol developed in this study provide a reliable measure of power output for rugby players.     

Lessons learned from an evolving DEI programme within a global publisher

• Diversity, equity and inclusion (DEI) is at the core of Springer Nature's mission. Prioritizing DEI helps us become the business we aim to be: one that enables millions of people to access, trust and make sense of the latest insights, to improve and enrich both our lives and the planet.
• We are committed to championing DEI across our content, communities and organization—and also across the whole set of businesses that make up Springer Nature Group—education, health, professional and research.
• Working across our business to harness the varied reach, business capabilities and resources of all our colleagues has been important in this journey, but so too is accountability and the collective efforts of pan-publisher initiatives.
• From editorial guidance to internal mentoring programmes and sustainable development curriculum programmes, our DEI work has been varied and successful, but we have learnt lessons along the way—and still have a way to go. This piece looks at what we have done so far, and our priorities for progress moving forward.

     

Contextualizing privacy with wearable data in higher education

This conceptual study uses dynamic systems theory (DST) and phenomenology as lenses to examine data privacy implications surrounding wearable devices that incorporate stakeholder, contextual and technical factors. Wearable devices can impact people's behaviour and sense of self, and DST and phenomenology provide complementary approaches for emphasizing the subjective experiences of individuals that occur with the use of wearable data. Privacy is approached through phenomenology as an individual's lived bodily experience and DST emphasizes the self-regulation and feedback loops of individuals and their uses of wearable data. The data collection, analysis and communication of wearable data to support learning systems alongside privacy implications for each are examined. The IoT, cloud computing, metadata and algorithms are discussed as they relate to wearable data, pointing out privacy risks and strategies to minimize harm.

Practitioner notes

What is already known about this topic

• Data privacy is a complex topic and is approached through different perspectives, influencing the degree of an individual's data autonomy.
• Wearable technology is increasing in the consumer market and offers great potential to learning environments.

What this paper adds

• Extends extant literature on dynamic systems theory and phenomenology, contributing these perspectives to educational research in the context of student data privacy and wearable technologies.
• Provides a framework to understand the complex and contingent ways that privacy can be understood in the collection, analysis, and communication of wearable data to support learning.

Implications for practice and/or policy

• Higher education faculty and educational policymakers should consider various interactions in systems and among systems of how wearable data collection may be analysed, communicated and stored, potentially exposing students to privacy harms.
• Multiple actors in learning systems must engage in continuous and evolving feedback loops around data security, consent, ownership and control to determine who has access to student data, how it is used and for what purposes.
• The EU's General Data Protection and Regulation offers one of the most comprehensive frameworks for higher education institutions and faculty around the world to follow for protecting student data privacy.