Body fat distribution as a risk factor for osteoporosis

Objective: The aim of this study was to compare the body fat distribution of patients with osteoporosis (GP) with that of an appropriately matched non-GP control group. Design: Case control study. Setting: Department of Endocrinology and Metabolism, Tygerberg Hospital. Participants: A total of 56 patients with histologicatly proven idiopathic GP, of whom 39 were women (mean age 61 ± 11 years) and 17 men (49 ± 15 years), were compared with 125 age- and sex-matched non-OP (confirmed by dual energy X-ray absorptiometry) subjects, 98 women (60 ± 11 years) and 27 men (51 ± 16 years). Outcome measures: Anthropometric data, including weight, height, skinfold measurements, mid-upper arm, waist and hip circumferences, as well as elbow breadth. Results: The men and women with OP were significantly shorter (P = 0.04 and P = 0.03 respectively) and of lower body mass (P = 0.04 and P = 0.02 respectively) than the control subjects, although their mean body mass indices were comparable. The OP population had significantly lower skinfold, elbow breadth and ann circumference values, although the majority of subjects in both groups fell within the 15 - 85th percentiles. Despite their lower body mass, both the OP women (P = 0.009) and men (P =0.002) had significantly higher waist/hip ratios than corresponding controls. Conclusion: Whatever the underlying pathogenesis, this new finding suggests that, should these results be confirmed by larger studies, OP can be added to the list of diseases associated with a waist fat distribution.S Afr Med J 1996; 86: 1081-108

Connecting the everyday with the formal: the role of bar models in developing low attainers’ mathematical understanding

Use of the bar model has gained momentum in England in recent years through the introduction of Singapore maths. Yet bar models originating from the Dutch approach known as Realistic Mathematics Education (RME), such as the fraction bar, the percentage bar and the double number line, have been available since the late 1990s. In this paper, we discuss the use of the bar in an intervention with low-attaining students in which we employed the RME approach. RME bases understanding in the everyday, where the role of the bar is to sustain modelling across multiple contexts, building on students’ informal models. We argue that this context-driven ‘bottom-up’ use of the bar is crucial in supporting progress towards formal mathematics, highlighting important issues to consider in the use of bar modelling, particularly with low attaining students. We suggest a consequent need for caution in use of the Singapore bar as a potential ‘top-down’ model

The role of appropriation in guided reinvention: establishing and preserving devolved authority with low-attaining students

Realistic Mathematics Education (RME) relies on the pedagogy of guided reinvention, in which opportunities for learning are created through the teacher’s orchestration of whole-class mathematical discussion towards a specific goal. However, introducing an RME approach to students who are accustomed to traditional teaching requires a substantial shift in roles, particularly with respect to the devolution of authority from teacher to student. In this study, we worked with low-attaining students, implementing RME to improve understanding of fractions. The analysis highlights how the introduction of guided reinvention is supported by extended wait time and teacher neutrality, but also by teachers’ appropriation of student strategies as a basis for supporting shared authority in the joint construction of mathematical ideas. The article considers the relationship between guided reinvention, appropriation and student agency

Position paper of the National Osteoporosis Foundation of South Africa (NOFSA) on the use of parathyroid hormone (PTH 1-34) in the treatment of osteoporosis

No Abstract.Journal of Endocrinology, Metabolism and Diabetes of South Africa Vol. 10(2) 2005: 51-5

Why context, relevance and repetition matter in news reporting: Interpreting the United Kingdom’s political information environment

This study develops a multi-method approach to analysing political information environments, exploring how media and political systems help shape people’s understanding of news. In doing so, we ask a question fundamental to democratic citizenship: how well do news media communicate political responsibility and policy differences across political systems? Our study examines the United Kingdom’s political information environment, where significant power is devolved to Scotland, Wales and Northern Ireland, with different political parties in control. Drawing on a content analysis of 17,765 news items, a representative survey of 3272 respondents and 15 semi-structured interviews, we examine the dominant information sources about UK politics by longitudinally tracing coverage of devolved issues from 2007 to 2016, and gauging how well it was understood by television news viewers. Our results suggest that while BBC news is more sensitive to communicating the devolved relevance of news than more commercial outlets, there remains a democratic deficit in the supply of political information and audience understanding of where power and responsibility lies. If news coverage more regularly communicated the relevance and context of devolved issues, we argue it could open up democratic opportunities for citizens to consider a wider range of policy options debated in all four political institutions

Monitoring athletes sleep: A survey of current trends amongst practitioners

Achieving adequate sleep is considered important for athletic performance and recovery from exercise, yet the sleep monitoring methods applied amongst practitioners within highperformance sport are not well documented. This study aimed to identify the athlete sleep monitoring practices currently being implemented by practitioners working with full-time, junior (competing at the highest level), and semi-professional athletes. An online survey was developed and disseminated via email and social media to practitioners working with high-performance athletes. A sample of 145 practitioners completed the survey. Most (88%) practitioners rated sleep as ‘extremely important’ for recovery and performance (79%) and 84% of practitioners had advised athletes on improving sleep. The practitioners who reported monitoring sleep used several methods, including a questionnaire (37%), diary (26%) and actigraphy (19%). The most cited barrier to monitoring sleep was lack of time/resources. Most (79%) practitioners had not determined athletes’ chronotypes. Over half (54%) of the practitioners suggested their athletes did not get enough sleep outside of competition periods; the highest ranked suggested reason for this was screen time (i.e., using electronic devices). Practitioners recognise the importance of sleep for athletes and sleep education/monitoring was common amongst the practitioners; however, chronotype analysis was not widely used. Most practitioners used questionnaires and diaries to monitor athletes’ sleep and suggested that their athletes often experience insufficient sleep outside of competition periods