The accuracy of the 24-h activity recall method for assessing sedentary behaviour: the physical activity measurement survey (PAMS) project

Sedentary behaviour (SB) has emerged as a modifiable risk factor, but little is known about measurement errors of SB. The purpose of this study was to determine the validity of 24-h Physical Activity Recall (24PAR) relative to SenseWear Armband (SWA) for assessing SB. Each participant (n = 1485) undertook a series of data collection procedures on two randomly selected days: wearing a SWA for full 24-h, and then completing the telephone-administered 24PAR the following day to recall the past 24-h activities. Estimates of total sedentary time (TST) were computed without the inclusion of reported or recorded sleep time. Equivalence testing was used to compare estimates of TST. Analyses from equivalence testing showed no significant equivalence of 24PAR for TST (90% CI: 443.0 and 457.6 min · day^–1) relative to SWA (equivalence zone: 580.7 and 709.8 min · day^–1). Bland–Altman plots indicated individuals that were extremely or minimally sedentary provided relatively comparable sedentary time between 24PAR and SWA. Overweight/obese and/or older individuals were more likely to under-estimate sedentary time than normal weight and/or younger individuals. Measurement errors of 24PAR varied by the level of sedentary time and demographic indicators. This evidence informs future work to develop measurement error models to correct for errors of self-reports.     

Teachers’ experiences of a single‐sex initiative in a co‐education school

Argued to ‘raise boys’ grades’ and ‘boost boys’ academic achievement’, single‐sex classes in coeducation schools is one strategy among a plethora aimed at raising standards. This paper explores the experiences of teachers in one coeducation post‐primary school that sought to raise academic performance, particularly among boys, and to improve classroom behaviour by introducing single‐sex classes. Funded by a local Education and Library Board the evaluation took place almost four years after the strategy was introduced and in a climate of increasing teacher concern with the effectiveness of the strategy. The methods involved a questionnaire survey to all teachers in the school and one‐to‐one and small group interviews with teachers responsible for teaching single‐sex classes. Contrary to its stated aims, the majority of teachers believe that, since the introduction of single‐sex classes, academic performance and classroom behaviour have deteriorated. Findings are discussed in terms of teachers’ perceptions of the strategy and the importance organizational and contextual factors have on shaping teachers’ attitudes to new initiatives.     

The politics are personal: The Australian vs the Australian curriculum in history

This article reviews the relationship between the conservative newspaper The Australian and the development of a national history curriculum in Australia. The lead author surveyed the major Australian press in the five-year period between 2007 and 2012 and found clear patterns of difference between The Australian and other press outlets in relation to education in general and history curriculum in particular. Using Jonathan Haidt's five-point model of moral values, the article analyses the behaviour of the press in Australia in relation to history education as a feature of moral preferences. Extending from this analysis, it then highlights a number of cases of press campaigns in The Australian targeted against individuals including one academic involved in the development of a national curriculum. The article demonstrates that a culture of aggressive conservatism exercised in this Murdoch press outlet reaches beyond the field of conventional political debate to constitute a serious and concerning influence in the dynamics of curriculum policy development.     

Social capital,behavioural control,and tacit knowledge sharing—A multi-informant design

As suggested by prior studies, tacit knowledge sharing is a natural process of social interaction. The perspectives of social capital and behavioural control are thus employed in this study to investigate an employee's tacit knowledge sharing and behaviour within a workgroup. This study collects data through a multi-informant questionnaire design. Three interesting results were obtained in this study. First, results show that tacit knowledge sharing intention can be induced by affect-based trust. However, shared value is negatively related to tacit knowledge sharing intention. Second, internal control has a positive effect on tacit knowledge sharing intention, but the relationship between internal control and tacit knowledge sharing behaviour could not be confirmed. Third, external control positively moderates the relationship between tacit knowledge sharing intention and behaviour. It is interesting to note that tacit knowledge sharing intention does not necessarily lead to tacit knowledge sharing behaviour unless the moderating effect of external control is taken into account. These findings and their implications are also addressed.     

数字时代基于本科生群体信息需求的图书馆服务模式研究

数字时代,大学生用户信息行为具有更青睐搜索引擎、更注重信息选择、更强调网络互动的特点;信息需求具有倾向无缝获取、注重时效性与精品性的特点。在对高校本科生群体信息需求共性及侧重点分析的基础上,提出了构建本科生群体信息服务平台这一服务模式。     

A meta-analysis of the drive for muscularity's relationships with exercise behaviour,disordered eating,supplement consumption,and exercise dependence

ABSTRACT

We examined the drive for muscularity's (DFM) relationships with exercise behaviour, disordered eating, supplement consumption, and exercise dependence in males. By searching electronic databases, manually reviewing journal tables of contents and retrieved article reference lists, and corresponding with leading researchers, we identified 77 studies. A random effects model was applied to perform analyses and we adjusted results for possible publication bias. The average effect sizes (r) the DFM had with weight training (.31), non-weight training (.11), disordered eating (.30), supplement consumption (.36), and exercise dependence (.43) were significant (P < .05). The relationship between the attitudes and behavioural subscales of the DFM Scale (r = .47) was significant (P < .001). For supplement consumption, moderator analysis indicated that r varied significantly for questionnaire type and participant status (student versus non-student, P < .01). The small to moderate relationships indicate the value of adopting theoretical perspectives allowing the examination of the DFM's role in predicting exercise and dietary behaviour within a broader psychosocial context. Most researchers have studied these relationships in isolation. The relationship between the two DFM subscales implies that the questionnaire total score may better represent a commitment to muscularity rather than a drive per se.     

Writing by academics: a transactional and systems approach to academic writing behaviours

The literature on academic writing in higher education contains a wealth of research and theory on students’ writing, but much less on academics’ writing. In performative higher education cultures, discussions of academics’ writing mainly concern outputs, rather than the process of producing them. This key component of academic work remains under-theorized, and the exact nature of the challenge of academic writing is understated at best and misunderstood at worst. This paper offers a new approach to academic writing, based on a transactional and a systems model, which aims to understand academic writing practices. This paper offers a new explanation of the challenge of academic writing, defining factors that enable and inhibit academics’ writing.     

高校体育文化的内涵、作用与建设

从体育文化概念的释义和体育文化作用的分析入手,就高校校园体育文化的特点,从时代性、社会性、动态性、创新性等方面作了阐述,并对校园体育文化的建设提出了针对性的建议。