Impact of physical activity and sedentary behaviour on fall risks in older people: a systematic review and meta-analysis of observational studies

The objective of this work was to summarise and evaluate the evidence showing that physical activity is a protector factor as regards falls in older people. Relevant studies were identified through a systematic search in the MEDLINE and Cochrane Library, under the keywords of accidental fall/numerical data and risk factors, and with the bibliographies of retrieved papers. The combined odds ratio (OR) [95% confidence interval] for physical activity was 0.75 [0.64, 0.88] with moderate heterogeneity (I ²?=?33%). For fall injury, it was 0.59 [0.47, 0.74] and, for falls in general, it rose to 0.94 [0.76, 1.17] with nil heterogeneity. The combined OR for sedentary factors was 1.14 [1.10, 1.82] with moderate heterogeneity (I ²?=?36%). Regular physical activity in daily life yields significant reduction in falls in older people, especially falls with injuries.     

“Make Sure You’re Not Getting Yourself in Trouble:” Building Sexual Relationships and Preventing Sexual Violence at the U.S. Military Academy at West Point

Sexual violence continues to present a problem on college campuses nationwide and among members of the U.S. military. This study attended to patterns of response in how students (cadets) at the U.S. Military Academy (West Point) discussed sexual and romantic relationships, both potential and actual, in order to examine how, if at all, they enact their sexuality-related values. Constructivist grounded theory was used to analyze semistructured interviews with three male and three female cadets from each of the 4 years of the undergraduate program, in which they are intended to become “leaders of character” who will serve as Army officers. Findings indicated limitations in cadets’ access to developing and implementing sexuality-related skills within this context. Cadets’ fear and distrust erected barriers to their pursuing their desires; the ways in which cadets avoided getting in trouble for sexual harassment or sexual assault shifted responsibility from a potential perpetrator onto a potential victim; and cadets were caught in dilemmas regarding romantic relationships as sources of both emotional support and social stigma. These findings have implications for promoting gender equity and for preventing sexual violence at this institution and at others like it, including both university campuses and other military settings.     

‘It's kind of saving them a job isn't it?’ The consumption work of household recycling

Consumers play an integral role in societal divisions of labour. Rather than simply consume, they frequently perform labour. Incorporating consumers into the division of labour poses a challenge to this foundational and enduring concept, given its traditional focus on the technical division of tasks/skills within a labour process. Yet, insofar as completion of a circuit of production, distribution, exchange and consumption is predicated on consumers undertaking work in order to/after they consume, analysis of the division of labour would be incomplete without their inclusion. This paper uses the case of household recycling to demonstrate the importance of ‘consumption work’ for the organization of the waste management industry in England. By sorting their waste, consumers initiate a new economic process, providing feedstock (such as metals, plastics and paper) which in turn creates jobs/profits within the recycling, processing and manufacturing industries. Consumers also reconfigure public and private sector responsibilities when they sort their recyclable materials from general household waste, revealing the interdependency of consumption work with labour conducted under different socio‐economic relations and across differing socio‐economic domains. This paper makes the case for a renewed conception of division of labour to account for transformations and interconnections between work of different forms within contemporary society.     

Time series count data regression

The count data model studied in the paper extends the Poisson model by al-lowing for overdispersion and serial correlation. Alternative approaches to esti-mate nuisance parameters, required for the correction of the Poisson maximum likelihood covariance matrix estimator and for a quasi-likelihood estimator, are studied. The estimators are evaluated by finite sample Monte Carlo experi-mentation. It is found that the Poisson maximum likelihood estimator with corrected covariance matrix estimators provide reliable inferences for longer time series. Overdispersion test statistics are wellbehaved, while conventional portmanteau statistics for white noise have too large sizes. Two empirical illustrations are included.     

Rationality,fairness and the cost of distrust

An adapted version of “the trust game with revenge” is applied to a Swedish setting. Senders – the first-movers – can keep an endowment of SEK 30, or give fractions or all to an unknown receiver. Donations are multiplied by five before reaching receivers, who may, or may not, send back part or the entire received amount. Half of the receivers are given information that the sender has the opportunity to exact revenge, while the remaining are not given this information. Results differ from Fehr and Gächter (2000), in the sense that the share of endowments sent in the first stage is around two thirds, compared to less than one third in Fehr and Gächter. Furthermore, they find a very strong effect of punishment while we find almost no effect. An efficiency frontier is defined and results show that that only 25% of the outcomes reach this frontier due to lack of trust. If senders were confident that receivers would return at least 20% of the donated amount, it is optimal to donate the whole endowment. Only about one-fifth returned of the receivers returned less than this, so for the most part the lack of trust is unwarranted.     

Sexual Coercion in Marriage: Narrative Accounts of Abused Mexican-American Women

Intimate partner sexual violence (IPSV) has been relatively understudied particularly from the perspective of women of color. This study documents the experiences with partner sexual violence of ten Mexican-American women. Qualitative interviews were conducted using snowball sampling with women that had been in abusive marital relationships. A phenomenological approach was used and through a thematic analysis, participant narrative responses were synthesized into themes. All participants reported sexual coercion and violence in their marriages, yet most did not label those experiences as “rape” despite the threatening context in which these incidents occurred. Tacit, but not always explicit acceptance of machismo, patriarchy, and male dominance were common themes possibly increasing IPV risk. Results highlight the complex interaction between upholding cultural values on the one hand, and preserving individual well-being and safety, on the other, underscoring the need for more extensive culturally sensitive research, prevention and intervention efforts for abused Mexican-American women     

Hate Speech and Constitutional Protection: Priming Values of Equality and Freedom

Freedom of speech and equality are two basic values in American culture that cause a value conflict with regard to hate speech. This study examined the effects of priming of values of freedom of speech and equal protection (equality) on perceptions of and attitudes toward hate speech and value prioritization. Data were collected from 159 college students. Priming of freedom of speech directed participants' attitudes and values toward advocating freedom of speech, whereas priming for equal protection directed attitudes and values toward the harm of hate speech. Participants primed for free speech viewed hate speech (introduced via scenarios) as less harmful and the speaker as less accountable than those primed for the harm of hate speech and a control group.     

Max-min (σ-)additiye representation of monotone measures

In non-additive measure and integration (or fuzzy measure and integral) one tries to generalise the issues of product measure and conditional expectation from the additive theory. In the discrete case successful attempts have been made via the max-min additive representation of the monotone measure and the corresponding integrals. The present paper intends to find, for arbitrary monotone measures, a max-min additive representation and, under certain topological assumptions, a representation with σ-additive measures, thus providing a powerful tool for the theory of non-additive measure and integration. Received: December 2000; revised version: September 2001