Scaling Constraints in Junior Tennis: The Influence of Net Height on Skilled Players’ Match-Play Performance

Purpose: The net height in tennis (0.91 m) is approximately 50% of a professional tennis player’s height. Children are also expected to play with this net height, even though it is approximately 70% of the average 10-year-old’s height. This study examined the immediate effect of lowering net height on the performance characteristics of skilled junior tennis players aged 10 years and younger. Method: Sixteen players were matched in 8 pairs of even tennis ability and same sex. Each pair played 25-min singles matches in 4 conditions that varied in net height (0.91 m, 0.78 m, 0.65 m, and 0.52 m). Match-play characteristics were analyzed via video replay. Results: Results showed that lowering the net height to 0.65 m and 0.52 m led to players adopting a more attacking style of play, as evidenced by a significant increase in the number of winners without a commensurate increase in errors and more shots struck inside the baseline. Lower nets also led to a greater percentage of successful first serves. The lowest net (0.52 m), however, reduced rally length significantly and therefore decreased hitting opportunities. Conclusion: These results offer support for equipment scaling to enhance match-play performance for skilled junior tennis players. We propose that current net height recommendations for junior tennis should be revised.     

Integrating moving average control procedures into the risk-based quality control plan in small-volume medical laboratories

IntroductionThe modern approach to quality control (QC) in medical laboratories implies the development of a risk-based control plan. This paper aims to develop a risk-based QC plan for a laboratory with a small daily testing volume and to integrate the already optimized moving average (MA) control procedures into this plan.Materials and methodsA multistage bracketed QC plan for ten clinical chemistry analytes was made using a Westgard QC frequency calculator. Previously, MA procedures were optimized by the bias detection simulation method.ResultsAspartate aminotransferase, HDL-cholesterol and potassium had patient-risk sigma metrics greater than 6, albumin and cholesterol greater than 5, creatinine, chlorides, calcium and total proteins between 4 and 5, and sodium less than 4. Based on the calculated run sizes and characteristics of optimized MA procedures, for 6 tests, it was possible to replace the monitoring QC procedure with an MA procedure. For the remaining 4 tests, it was necessary to keep the monitoring QC procedure and introduce MA control for added security.ConclusionThis study showed that even in a laboratory with a small volume of daily testing, it is possible to make a risk-based QC plan and integrate MA control procedures into that plan.     

Exploring neglected narratives: understanding vulnerability in narrative inquiry

Framed by a question around vulnerability in narrative inquiries, we show the multiple ways that vulnerability is evident in narrative inquiry. We take up the concerns around vulnerability to show how, as narrative inquirers, we are searching to find ways to think with vulnerability and with what others have called neglected narratives. Drawing on one study with Aboriginal youth and their families, we make visible how questions of vulnerability need to be considered in framing of research puzzles, selecting participants, and moving from field to field texts to interim and final research texts. In composing final research texts, we struggled with the notions of vulnerability that are placed on Aboriginal youth by labels and single stories. These assigned vulnerabilities lead to interpretations that could create experiences of judgment. We returned again to the importance of making experiences visible, in order to shift understandings of who Aboriginal youth are, and are becoming, in a complex world that will not write over or ‘erase their Indianness’ nor their or our vulnerabilities. We showed the ways questions of vulnerability are inextricably interwoven into narrative inquiry.     

Search for autonomy in motor task learning in physical education university students

The study focused on discovering the influence that an autonomous motor task learning programme had on the improvement of perceived competence, intrinsic regulation, incremental belief and motivational orientations. The study was performed with two groups of participants (n = 22 and n = 20) aged between 19 and 35 years. The instruments used were the incremental factor of the Conceptions of the Nature of Athletic Ability Questionnaire (CNAAQ-2), the Goal Orientation in Exercise Scale (GOES), the intrinsic regulation factor of the Behavioural Regulation in Exercise Questionnaire (BREQ-2), the perceived autonomy factor of the autonomy measurement scale (EMA) and the perceived competence factor of the Motives for Physical Activity Measure Revised Scale (MPAM-R). The questionnaires were handed out over 3 months in a weekly session with pre-test and post-test. The results showed that the use of an autonomy-based teaching programme increased perceived competence, intrinsic motivation, incremental ability belief and task-involving motivational orientation.     

Institutional experience of PTH evaluation on fine-needle washing after aspiration biopsy to locate hyperfunctioning parathyroid tissue

Assaying parathyroid hormone (PTH) in the washing liquid after fine-needle aspiration biopsy (FNAB) seems to be a valid approach to locate parathyroid tissue. PTH-FNAB was evaluated in 47 patients with a clinical picture of primary hyper-parathyroidism (PHP) and ultrasonography (US) suggestive of parathyroid lesion. The patients were subdivided into two groups on the basis of the absence or presence of US thyroid alterations. The result of PTH-FNAB was compared with those of cytology, scintigraphy and, in 24 patients, surgical outcome. PTH-FNAB samples with a value higher than that recorded in the serum and higher than our institutional cut-off were deemed to be probable samples of parathyroid tissue. Cytology proved diagnostic for benign thyroid lesions, non-diagnostic for thyroid lesions, hyperplastic parathyroid tissue, undetermined or malignant thyroid lesions and other lesions in 45%, 30%, 17%, 4%, and 4% of cases, respectively. In 47% of cases, PTH-FNAB indicated that the sample had been taken in parathyroid tissue. In patients without US alterations, the diagnostic accuracy of PTH-FNAB was greater than that of scintigraphy. After surgery, comparison between the results of PTH-FNAB and scintigraphy, in terms of positive predictive value (PPV), revealed the superiority of PTH-FNAB; PPV was 94% for FNAB and 71% for scintigraphy, while sen-sitivity was 83% and 69%, respectively. PTH-FNAB evaluation after FNAB appears to be more diagnostic than cytology and scintigraphy. Of all the procedures used, PTH-FNAB appears to be the method of choice when the target is US suggestive and reachable. PTH-FNAB appears to be a useful method of guiding surgical intervention.     

On the governance of information: Introducing a new concept of governance to support the management of information

Information governance as an approach to better govern the use of information within and outside an organization is rapidly gaining popularity. A common and scientific ground for this approach has not yet been formulated. In this article the authors describe a definition for information governance, extending the common, one-dimensional approach into a more generic statement. Starting from the well-known principles of IT governance the authors further explore the aspects of both information and governance. Four hypotheses are proposed to give ground to the use of information governance. These hypotheses will be the basis for further research.     

Higher education students’ experiences of a short-term international programme: Exploring cultural competency and professional development

Background: Globalisation trends such as increased migration to and within European countries have led to even greater cultural diversity in European societies. Cultural diversity increases the demand of cultural competency amongst professionals entering their work field. In particular, healthcare professionals need knowledge and skills to equip them to work with clients from different cultural backgrounds. Within higher education (HE), the professional development of cultural competency should ideally feature in undergraduate education and is often promoted as a by-product of a study abroad period. However, recognising that logistical and financial barriers often exist for extended study abroad, one alternative approach could be participation, at home or abroad, in a short-term international programme set within students’ own HE institutions.

Purpose: The aim of this study was to explore HE students’ experiences of participating in international ‘short-term mobility week’ programmes at three European universities.

Methods: Each university involved in the research offered short-term programmes for healthcare professions students at their own institution, where both local students and students from abroad could participate. Participants were healthcare students in the programme at one of the three universities. Data were collected through focus group interviews (4–8 students per group; n = 25). The data were transcribed and then analysed qualitatively, using a content comparison method.

Results: The analysis identified six categories, which reflected students’ journeys within the short-term international experiences.

Conclusions: The analysis suggested that, for these students, engagement in a short-term mobility week programme provided valuable opportunities for encounters with others, which contributed to personal and professional development, greater confidence in the students’ own professional identities, as well as an increasing sense of cultural awareness.     

Effects of a memory training program in older people with severe memory loss

ABSTRACT

Strategies based memory training programs are widely used to enhance the cognitive abilities of the elderly. Participants in these training programs are usually people whose mental abilities remain intact. Occasionally, people with cognitive impairment also participate. The aim of this study was to test if memory training designed specifically for healthy people is effective in people with severe memory impairment. We carried out a 10-year retrospective case-control study with Rivermead Behavioural Memory Test (RBMT) and memory complaint measures obtained pre-post training. The case group consisted of 73 people with memory impairment (IM group). The control group (n = 72) was made of individuals with preserved memory and sociodemographic characteristics similar to the case group (PM group). Both groups improved their performance on everyday memory tasks (measured using the RBMT). The IM group improved more than the PM group in everyday memory tasks, especially in prospective memory tasks. Both groups also reduced their level of subjective complaints as a result of training. In conclusion, our results are encouraging with respect to the efficacy of comprehensive memory training programs for older people with severe memory impairment.     

Look closer: the alertness of people with profound intellectual and multiple disabilities during multi-sensory storytelling,a time sequential analysis

Introduction: Multi-sensory storytelling (MSST) is a storytelling method designed for individuals with profound intellectual and multiple disabilities (PIMD). It is essential that listeners be alert during MSST, so that they become familiar with their personalised stories. Repetition and the presentation of stimuli are likely to affect the alertness of listeners during MSST. Previous studies have only examined the overall level of alertness during MSST. This study focuses on changes in alertness over time during storytelling. Method: In this study, 27 direct support people read an MSST book 20 times with a person with PIMD. The 1st, 5th, 10th and 20th storytelling sessions were recorded. The relation between alertness and the active presentation of stimuli is analyzed using a time-window sequential analysis. We examined changes in alertness levels by comparing the four different storytelling sessions. Results: Higher levels of active alertness were observed when stimuli were actively presented. Alertness was not constant within storytelling sessions, and was related to the presentation of stimuli. Actively presented stimuli were associated with larger fluctuations in alertness. Discussion: Storytellers should present stimuli actively and for longer periods, in order to increase the alertness of listeners during storytelling.