Influence of chronic exercise on serum cortisol levels in older adults

The circulating level of cortisol is regulated by the hypothalamic-pituitary-adrenal axis through a neuroendocrine feedback circuit. This circuit can be activated by physiological stimuli such as stress, diseases, and exercise. High levels of serum cortisol hormone normally occur as a byproduct of aging, and can cause several types of damage to the organism and exacerbate immunosenescence. There is a great deal of variability in the cortisol response with regard to type, intensity, volume, and frequency of exercise. However, these relationships have been extensively studied with respect to the acute effects of exercise. Despite the well-known effects of acute exercise on cortisol response, it is unclear how it is affected by chronic exercise and the aging process. Therefore, the aim of this study was to conduct a review of studies that attempt to analyze the influence of chronic exercise on serum cortisol hormone in older people. In order to accomplish this goal, a review from 1970 to June 2012 period was performed using the following databases: Biological Abstracts, PsycINFO, PubMed/Medline, and the Web of Science. Eight articles met the criteria used in this study. Based on the included articles, chronic exercise may influence the serum levels of cortisol levels in older people. Despite this evidence, these results may not be generalized to the entire population of older people, given the few number of studies and especially because the studies showed diversity in variables and methodologies.     

Unemployment Duration and Disability: Evidence from Portugal

This paper studies the relationship between having a disability and unemployment duration by focusing on individuals registered at Portuguese job centers. Despite its relevance, because disabled people are likely to occupy disadvantaged positions in the labor market, it has received little attention in the literature. As different disabilities affect unemployment duration differently, we distinguish different types of disabilities and shed light on disability-specific support policies. We apply a discrete time hazard model with unobserved heterogeneity to microdata from the Instituto do Emprego e Formação Profissional, which are free from self-reporting problems in disability identification. We find lower reemployment probabilities for many groups of disabled people: individuals with impairment in general functions, disfiguring, speech and visual disorders, muscle-skeletal and other organ impairments experience the more disadvantaged positions. Decomposition analysis indicates that part of the disadvantage is due to differences in returns rather than to differences in characteristics. These findings suggest that the disadvantage of disabled people in the labor market is not only explained by a different distribution of characteristics but especially by the interaction of their characteristics with the work environment. Policy implications are discussed.     

Pensions,poverty and wellbeing in later life: Comparative research from South Africa and Brazil

This paper draws on two linked studies of social policy and wellbeing in later life. The studies make comparisons between distinct groups of older people at the national and sub-national levels, as well as over time. The paper reflects on some of the main challenges for operationalising this complex design, as well as for interpreting findings and identifies lessons for other studies. The first study, conducted in 2002, included a questionnaire survey of around 2000 households containing at least one older person in South Africa and Brazil, supplemented by a set of in-depth qualitative interviews. Intriguingly, these countries had remarkably similar pension programmes, providing the majority of older people a reliable payment of roughly US$3 a day. This offered the prospect of exploring the effects of similar interventions in distinct developmental and cultural settings. In both countries, we found that these pensions had a substantial impact on the prevalence and depth of poverty in the study households, and were usually shared between older people and other family members. The second survey took place in 2008/9 and involved revisiting the households included in the 2002 survey, along with a separate set of in-depth interviews. This provided an opportunity for dynamic analysis of economic and wellbeing effects, against a backdrop of increased divergence in the wider national settings. Among other things, this revealed high and increasing levels of life satisfaction across all the study groups, although the extent to which this was directly related to generous pension provision cannot be ascertained.     

Assesment of managerial behavior in the correction of ergonomic problems at an airport

As demanded at Collective Employment Agreement (CEA), three ergonomic assessment of work (AEW) were made into an airport from a big Brazilian city (in particular, at the flight tower), with a 2 years interval between them. The objective was to produce a report pointing out problems and solutions. At the third time (2010), were verified that the work conditions where almost the same from 2006 and 2008, although all recommendations made in the reports. This work presents how the AET Team worked with this situation. At the third AEW, due the lack of real changes and the necessity of a report, the strategy was to know how workers where dealing with the complains and constraint detected at the previous reports, and how it interfere in abnormal or danger situations. Trying to explain this organizational phenomenon, we resort to Resilience Engineering to understand how those f/actors played to achieve its objectives.     

The conception of fashion products for children: reflections on safety parameters

The purpose of this study is to reflect on safety requirements for children's clothing, based on the standardization proposed by the ABNT (Technical Standardization Brazilian Association). Bibliographic research and case studies were considered on writing this work. We also discuss the importance of adding other safety requirements to the current standardization, as well as the increasing of the actual age range specified by the ABNT, following the children's clothing safety standardizations in Portugal and the United States, also stated here.     

Ergonomics issues in conceinving an accessible project

Public space is endowed with undeniable social relevance, thus becoming a defining element of integration and interaction among its users. Aware of this importance the Universidade Federal da Paraíba (UFPB), linked to the Ministério da Educa??o e Cultura (MEC), develops the project "UFPB para todos: eliminando barreiras' (UFPB for all: removing barriers) that aims to conceive an architectural design of an accessible rout to UFPB's campus I, and execute a pilot stretch of this route. This article aims to subsidize the preprojectual phase by understanding the needs of this campus' users, through the concepts of ergonomics and universal design. Was performed out direct observation of the space, and the methods of interviews and observation of user behavior were applied to a group of students with disabilities, through the techniques of assisted walking, photographic and video recording. Based on those, projective guidelines have been defined, which will contribute to the final project's quality, so that this is not a simple application of the rule, but works free of segregating barriers.     

Work Conditions,Social Incorporations,and Foodborne Diseases Risk: Reflections About the (Non)Compliance of Food Safety Practices

The number of foodborne diseases has increased in all continents, and efforts must be made to control this urgent and expressive public health problem. This article aims to present and discuss situations related to the compliance and noncompliance of food safety practices (FSPs) in light of Bourdieu's social theory. This qualitative study was conducted in commercial restaurants in two cities in São Paulo, Brazil. Participant observation was used in the restaurants, and notes referring to the kitchen workers and their bosses’ work processes were registered in field journals. Thematic type content analysis was used to determine the meaning cores of field journals. It was found that aspects inherent to convenience and haste at work, deficient infrastructure, lack of employees, negative boss examples, exposure to noise, and body pain experienced by workers can contribute to noncompliance of FSPs and consolidate in the habitus and practical sense some dispositions that can increase the risk of foodborne diseases. This study highlights the necessity of creating environments that address food safety, which means being able to perform a service properly.     

Transformed symmetric generalized autoregressive moving average models

Cordeiro and Andrade [Transformed generalized linear models. J Stat Plan Inference. 2009;139:2970–2987] incorporated the idea of transforming the response variable to the generalized autoregressive moving average (GARMA) model, introduced by Benjamin et al. [Generalized autoregressive moving average models. J Am Stat Assoc. 2003;98:214–223], thus developing the transformed generalized autoregressive moving average (TGARMA) model. The goal of this article is to develop the TGARMA model for symmetric continuous conditional distributions with a possible nonlinear structure for the mean that enables the fitting of a wide range of models to several time series data types. We derive an iterative process for estimating the parameters of the new model by maximum likelihood and obtain a simple formula to estimate the parameter that defines the transformation of the response variable. Furthermore, we determine the moments of the original dependent variable which generalize previous published results. We illustrate the theory by means of real data sets and evaluate the results developed through simulation studies.     

Cognition and Behavior in Normal‐Form Games: An Experimental Study

This paper reports experiments designed to study strategic sophistication, the extent to which behavior in games reflects attempts to predict others’ decisions, taking their incentives into account. We study subjects’ initial responses to normal‐form games with various patterns of iterated dominance and unique pure‐strategy equilibria without dominance, using a computer interface that allowed them to search for hidden payoff information, while recording their searches. Monitoring subjects’ information searches along with their decisions allows us to better understand how their decisions are determined, and subjects’ deviations from the search patterns suggested by equilibrium analysis help to predict their deviations from equilibrium decisions.