Showing papers on "Stressor published in 2013"

Stress and Cardiovascular Disease: An Update on Current Knowledge

Abstract: Considerable progress has been made during the past decade in research on cardiovascular effects of stress. Early-life stressors, such as childhood abuse and early socioeconomic adversity, are linked to increased cardiovascular morbidity in adulthood. Our updated meta-analyses of prospective studies published until 2011 show a 1.5-fold (95% confidence interval 1.2–1.9) increased risk of coronary heart disease among adults experiencing social isolation and a 1.3-fold (1.2–1.5) excess risk for workplace stress; adverse metabolic changes are one of the underlying plausible mechanisms. Stress, anger, and depressed mood can act as acute triggers of major cardiac events; the pooled relative risk of acute coronary syndrome onset being preceded by stress is 2.5 (1.8–3.5) in case-crossover studies. Stress is also implicated in the prognosis of cardiovascular disease and in the development of stress (takotsubo) cardiomyopathy. A major challenge over the next decade is to incorporate stress processes into the mainst...

Effects of childhood poverty and chronic stress on emotion regulatory brain function in adulthood

Abstract: Childhood poverty has pervasive negative physical and psychological health sequelae in adulthood. Exposure to chronic stressors may be one underlying mechanism for childhood poverty−health relations by influencing emotion regulatory systems. Animal work and human cross-sectional studies both suggest that chronic stressor exposure is associated with amygdala and prefrontal cortex regions important for emotion regulation. In this longitudinal functional magnetic resonance imaging study of 49 participants, we examined associations between childhood poverty at age 9 and adult neural circuitry activation during emotion regulation at age 24. To test developmental timing, concurrent, adult income was included as a covariate. Adults with lower family income at age 9 exhibited reduced ventrolateral and dorsolateral prefrontal cortex activity and failure to suppress amygdala activation during effortful regulation of negative emotion at age 24. In contrast to childhood income, concurrent adult income was not associated with neural activity during emotion regulation. Furthermore, chronic stressor exposure across childhood (at age 9, 13, and 17) mediated the relations between family income at age 9 and ventrolateral and dorsolateral prefrontal cortex activity at age 24. The findings demonstrate the significance of childhood chronic stress exposures in predicting neural outcomes during emotion regulation in adults who grew up in poverty.

A Person-by-Situation Approach to Emotion Regulation Cognitive Reappraisal Can Either Help or Hurt, Depending on the Context

Abstract: Emotion regulation is central to psychological health. For instance, cognitive reappraisal (reframing an emotional situation) is generally an adaptive emotion-regulation strategy (i.e., it is associated with increased psychological health). However, a person-by-situation approach suggests that the adaptiveness of different emotion-regulation strategies depends on the context in which they are used. Specifically, reappraisal may be adaptive when stressors are uncontrollable (when the person can regulate only the self) but maladaptive when stressors can be controlled (when the person can change the situation). To test this prediction, we measured cognitive-reappraisal ability, the severity of recent life stressors, stressor controllability, and level of depression in 170 participants. For participants with uncontrollable stress, higher cognitive-reappraisal ability was associated with lower levels of depression. In contrast, for participants with controllable stress, higher cognitive-reappraisal ability was associated with greater levels of depression. These findings support a theoretical model in which particular emotion-regulation strategies are not adaptive or maladaptive per se; rather, their adaptiveness depends on the context.

Environmental metabolomics: an emerging approach to study organism responses to environmental stressors

Abstract: Metabolomics is the analysis of endogenous and exogenous low molecular mass metabolites within a cell, tissue, or biofluid of an organism in response to an external stressor. The sub-discipline of ...

The Effect of Music on the Human Stress Response

Abstract: BackgroundMusic listening has been suggested to beneficially impact health via stress-reducing effects. However, the existing literature presents itself with a limited number of investigations and with discrepancies in reported findings that may result from methodological shortcomings (e.g. small sample size, no valid stressor). It was the aim of the current study to address this gap in knowledge and overcome previous shortcomings by thoroughly examining music effects across endocrine, autonomic, cognitive, and emotional domains of the human stress response. MethodsSixty healthy female volunteers (mean age = 25 years) were exposed to a standardized psychosocial stress test after having been randomly assigned to one of three different conditions prior to the stress test: 1) relaxing music (‘Miserere’, Allegri) (RM), 2) sound of rippling water (SW), and 3) rest without acoustic stimulation (R). Salivary cortisol and salivary alpha-amylase (sAA), heart rate (HR), respiratory sinus arrhythmia (RSA), subjective stress perception and anxiety were repeatedly assessed in all subjects. We hypothesized that listening to RM prior to the stress test, compared to SW or R would result in a decreased stress response across all measured parameters. ResultsThe three conditions significantly differed regarding cortisol response (p = 0.025) to the stressor, with highest concentrations in the RM and lowest in the SW condition. After the stressor, sAA (p=0.026) baseline values were reached considerably faster in the RM group than in the R group. HR and psychological measures did not significantly differ between groups. ConclusionOur findings indicate that music listening impacted the psychobiological stress system. Listening to music prior to a standardized stressor predominantly affected the autonomic nervous system (in terms of a faster recovery), and to a lesser degree the endocrine and psychological stress response. These findings may help better understanding the beneficial effects of music on the human body.

Early-life stress has persistent effects on amygdala function and development in mice and humans

Abstract: Relatively little is known about neurobiological changes attributable to early-life stressors (e.g., orphanage rearing), even though they have been associated with a heightened risk for later psychopathology. Human neuroimaging and animal studies provide complementary insights into the neural basis of problem behaviors following stress, but too often are limited by dissimilar experimental designs. The current mouse study manipulates the type and timing of a stressor to parallel the early-life stress experience of orphanage rearing, controlling for genetic and environmental confounds inherent in human studies. The results provide evidence of both early and persistent alterations in amygdala circuitry and function following early-life stress. These effects are not reversed when the stressor is removed nor diminished with the development of prefrontal regulation regions. These neural and behavioral findings are similar to our human findings in children adopted from orphanages abroad in that even following removal from the orphanage, the ability to suppress attention toward potentially threatening information in favor of goal-directed behavior was diminished relative to never-institutionalized children. Together, these findings highlight how early-life stress can lead to altered brain circuitry and emotion dysregulation that may increase the risk for psychopathology.

Work-related post-traumatic stress disorder

Abstract: Background Work-related post-traumatic stress disorder (PTSD) is an important condition encountered by many occupational health practitioners. Aims To carry out an in-depth review of the research on occupational groups that are at particular risk of developing work-related PTSD. Methods A literature search was conducted in the databases OVID MEDLINE, OVID Embase, Ovid PsycINFO, ISI Web of Science and CSA Health and Safety Science Abstracts. Results Professionals such as police officers, firefighters and ambulance personnel often experience incidents that satisfy the stressor criterion for the PTSD diagnosis. Other professional groups such as health care professionals, train drivers, divers, journalists, sailors and employees in bank, post offices or in stores may also be subjected to work-related traumatic events. Work-related PTSD usually diminishes with time. Conclusions Mental health problems prior to the traumatic event and weak social support increase the risk of PTSD. Prevention of work-related PTSD includes a sound organizational and psychosocial work environment, systematic training of employees, social support from colleagues and managers and a proper follow-up of employees after a critical event.

Occupational Stress and Turnover Intention: Implications for Nursing Management

Abstract: Background The main purpose of this study was to explore the status of occupational stress among hospital nurses in Isfahan, Iran. It also aimed to examine the relationship between nurses’ occupational stress and their intention to leave the hospital. Methods The study employed a cross-sectional research design. A validated questionnaire was used to collect data from 296 nurses. Respondents were asked to rate the intensity of 30 common occupational stressors using a five-point scale. Results A third of hospital nurses rated their occupational stress high. The major sources of stress were inadequate pay, inequality at work, too much work, staff shortage, lack of promotion, job insecurity and lack of management support. More than 35% of nurses stated that they are considering leaving the hospital, if they could find another job opportunity. Occupational stress was positively associated with nurses’ turnover intentions. Conclusion Hospital managers should develop and apply appropriate policies and strategies to reduce occupational stress and consequently nurses’ turnover intention.

Nurses and stress: recognizing causes and seeking solutions.

Abstract: Aims To identify, from the perspectives of nurses, occupational stressors and ways in which they may be reduced. Background Nurses commonly experience high levels of occupational stress, with negative consequences for their physical and psychological health, health-care organisations and community. There is minimal research on reducing occupational stress. Method Six focus groups were conducted with 38 registered nurses using a qualitative exploratory approach. Participants were asked to identify sources of occupational stress and possible workplace initiatives to reduce stress. Findings Sources of occupational stress were: high workloads, unavailability of doctors, unsupportive management, human resource issues, interpersonal issues, patients' relatives, shift work, car parking, handover procedures, no common area for nurses, not progressing at work and patient mental health. Suggestions for reduction included: workload modification, non-ward-based initiatives, changing shift hours, forwarding suggestions for change, music, special events, organisational development, ensuring nurses get breaks, massage therapists, acknowledgement from management and leadership within wards. Conclusion The findings highlight the need to understand local perspectives and the importance of involving nurses in identifying initiatives to reduce occupational stress. Implications for nursing management Health-care environments can be enhanced through local understanding of the occupational stressors and productively engaging nurses in developing stress reduction initiatives. Nurse managers must facilitate such processes.

How to measure prenatal stress? A systematic review of psychometric instruments to assess psychosocial stress during pregnancy.

Abstract: BACKGROUND A growing body of literature documents associations of maternal psychosocial stress during pregnancy with fetal, infant and child behaviour and development. However, findings across studies are often inconsistent, which may in part be due to differences in stress definitions and assessments. METHODS We systematically reviewed methods applied to assess maternal psychosocial stress during pregnancy in studies looking at associations with biobehavioural outcomes in the offspring. A systematic literature search was performed on Web of Science and PubMed for the time period between January 1999 and October 2009. Psychometric instruments assessing maternal psychosocial stress during pregnancy were identified and described if data on psychometric properties were available. RESULTS We identified 115 publications that assessed psychosocial stress during pregnancy with validated methods. These publications applied overall 43 different instruments assessing constructs falling under seven categories, ordered according to their frequency of use: anxiety, depression, daily hassles, aspects of psychological symptomatology (not reduced to anxiety or depression), life events, specific socio-environmental stressors and stress related to pregnancy and parenting. If available, we provide information on validity and reliability of the instruments for samples of pregnant women. CONCLUSIONS Within the 'prenatal stress' research, a broad range of instruments is applied to assess psychosocial stress during pregnancy. Prenatal stress research should take into consideration that the variety of methods in use might hamper the comparability of stress research results. In each category of stress constructs, one instrument with good psychometric properties in pregnant women is highlighted as the best currently available measure.

Time Urgency and Its Relation to Occupational Stressors and Health Outcomes for Health Care Professionals

Abstract: Part 1: Assessing Stress, Emotion And Coping In Daily Life Social Support - current status, current issues experience, expression and control of anger in Chinese society - the case of Singapore assessing anger with the Minnesota Multiphasic Personality Inventory the Norwegian adaption of the state-trait Anger Expression Inventory - a presentation of its main pychometric properties stress and passionate love. Part 2 stress And Emotion In The Workplace Occupational Stress, Personnel Adaption And health time urgency and its relation to occupational stressors and health outcome for health care professionals causes and consequences of familial role stress among working women - a case study in India work stress disorders by persons with severe mental disorders. Part 3: stress And Emotions In The School Changes In Anxiety And Anger For College students performing a rock classification task relations of anger expression to depression and blood pressure in high school students. Part 4: Anger, Emotions And Disease, Anger Supression, Cynical Distrust And hostility - implications for coronary heart disease suppressing your anger - good good manners, bad health? anger expression and blood pressure anger and anxiety in hypersensitive patients in India behavioral intervention for post-traumatic stress disorder.

Continuous Traumatic Stress: Expanding the Lexicon of Traumatic Stress

Abstract: Despite substantial theoretical and empirical advances in the field of traumatic stress since the introduction of the diagnosis of posttraumatic stress disorder (PTSD) into the mental health nomenclature, existing conceptualizations of traumatic stress retain the assumption that traumatic experiences have occurred in the past. We propose continuous traumatic stress (CTS) as a supplementary construct within the lexicon of traumatic stress, to describe the experience and impact of living in contexts of realistic current and ongoing danger, such as protracted political or civil conflict or pervasive community violence. We discuss four key characteristics of CTS and consider these in relation to existing formulations of complicated traumatic stress: the context of the stressor conditions, the temporal location of the stressor conditions, the complexity of discriminating between real and perceived or imagined threat, and the absence of external protective systems. We advance a tentative descriptive picture of how CTS may present and discuss the potential adaptive and pathological dimensions of the phenomenon.

The Foundations of Resilience: What Are the Critical Resources for Bouncing Back from Stress?

Abstract: The purpose of this chapter was to examine the relationship between potential resources for resilience and resilience itself. The Brief Resilience Scale [Smith et al. (International Journal of Behavioral Medicine 15:194–200, 2008)] was used to assess resilience as the ability to bounce back or recover from stress. Several potential resilience resources were assessed based on a model of resilience that involves the three stages of confronting a stressor, orienting to a positive outcome, and actively coping with the stressor. The personal and social resources assessed included active coping, mindfulness, mood clarity, optimism, purpose in life, spirituality, positive relations with others, and social support. The demographic characteristics assessed included age, gender, education, and income. The participants were 844 adults who were part of six samples: (1) general college students (n =259), (2) healthy adult women (n = 51), (3) women with fibromyalgia (n = 32), (4) cardiac patients (n = 228), (5) first-generation college students (n = 150), and (6) urban firefighters (n = 123). The results were consistent with the temporal stage model in that the personal resources targeted at each stage were related to resilience. With all samples combined, mindfulness, mood clarity, purpose in life, optimism, and active coping were related to greater resilience in both correlation and multiple regression analyses. Even when the samples were analyzed separately, these variables were consistently related to greater resilience with optimism and mood clarity having the strongest relationships with resilience. Optimism and purpose in life had very strong relationships with resilience in cardiac patients and women with fibromyalgia purpose, respectively. Age and male gender were also related to greater resilience in the multiple regression analyses of the combined samples. A revised theoretical model for understanding the foundations of resilience based on the findings is presented and implications for future research and clinical work are discussed.

Social Stress in the Twenty-First Century

Abstract: After we review the basic distinctions among types of stress, and between the biological and engineering models for stress, we elaborate a two-way classification of stressors, based on the chronicity of the stressor and the level of social context at which the stressor occurs. This classification allows a conceptual map of most of the kinds of events and social conditions commonly thought of as stressors. We consider the development of stress research since 2000, with special attention given to the impact of macroevents such as 9/11 on the direction of stress research. We argue that these events have especially directed attention to the study of contextual stressors and traumatic stressors. At the same time, there has also been a steady increase in the study of chronic stressors, in part, due to the affinity between chronic stress and related concepts that echo the problem of structurally based continuous stress—“stress in other words.”

Relationship Between Job Stress, Workload, Environment and Employees Turnover Intentions: What We Know, What Should We Know

Abstract: In this competitive era, organizations are continuously looking new ways to develop their human capital. This leads to a new challenge i.e., how organizations can retain their skilled human resource. Present study is focused to find out the relationship among job stressor, workload, work place environment and employee turnover intentions. A random sample of 250 employees from textile industry of Pakistan is selected. Total 109 employees responded and filled the questionnaire, with a response rate of 44%. Structural modelling is used for empirical analysis of data using AMOS 18 software. Results reveal that employee turnover intentions are positively related with job stressor and work load. While negative relationship with work place environment is reported.

Age differences in emotional responses to daily stress: The role of timing, severity, and global perceived stress

Abstract: Research on age differences in emotional responses to daily stress has produced inconsistent findings. Guided by recent theoretical advances in aging theory (S. T. Charles, 2010, Strength and vulnerability integration: A model of emotional well-being across adulthood, Psychological Bulletin, Vol. 136, pp. 1068-1091) that emphasize the importance of context for predicting when and how age is related to affective well-being, the current study examined age differences in emotional responses to everyday stressors. The present study examined how three contextual features (e.g., timing of exposure, stressor severity, global perceived stress [GPS]) moderate age differences in emotional experience in an ecological momentary assessment study of adults (N = 190) aged 18-81 years. Results indicated that older adults' negative affect (NA) was less affected by exposure to recent stressors than younger adults, but that there were no age differences in the effects of stressor exposure 3-6 hr afterward. Higher levels of GPS predicted amplified NA responses to daily stress, and controlling for GPS eliminated age differences in NA responses to stressors. No age differences in NA responses as a function of stressor severity were observed. In contrast, older age was associated with less of a decrease in PA when exposed to recent stressors or with more severe recent stressors. There were no age differences in the effect of previous stressor exposure or severity on PA, or any interactions between momentary or previous stress and GPS on PA. Together, these results support the notion that chronic stress plays a central role in emotional experience in daily life. We discuss the implications of these results for emotion theories of aging.

Job Stress Across Gender: The Importance of Emotional and Intellectual Demands and Social Support in Women

Abstract: This study aims to analyse whether any differences exist between the genders with respect to the effect of perceived Job Demands, Control and Support (JDCS model) on how individuals reach high levels of job stress. To do this, the perceived risk of suffering an illness or having an accident in the workplace is used as an outcome measure. The study is based on the First Survey on Working Conditions in Andalusia, which has a sample of 5,496 men and 2,779 women. We carry out a multi-sample analysis with structural equation models, controlling for age and sector. The results show that the generation of job stress has a different pattern in men and women. In the case of men, the results show that only one dimension of the job demands stressor is significant (quantitative demands), whose effect on job stress is weakened slightly by the direct effects of control and support. With women, in contrast, emotional and intellectual aspects (qualitative demands) are also statistically significant. Moreover, social support has a greater weakening effect on the levels of job stress in women than in men. These results suggest that applying the JDCS model in function of the gender will contribute to a greater understanding of how to reduce the levels of job stress in men and women, helping the design of more effective policies in this area.

Psychosocial risk factors for coronary heart disease.

Abstract: In 2003, the National Heart Foundation of Australia published a position statement on psychosocial risk factors and coronary heart disease (CHD). This consensus statement provides an updated review of the literature on psychosocial stressors, including chronic stressors (in particular, work stress), acute individual stressors and acute population stressors, to guide health professionals based on current evidence. It complements a separate updated statement on depression and CHD. Perceived chronic job strain and shift work are associated with a small absolute increased risk of developing CHD, but there is limited evidence regarding their effect on the prognosis of CHD. Evidence regarding a relationship between CHD and job (in)security, job satisfaction, working hours, effort-reward imbalance and job loss is inconclusive. Expert consensus is that workplace programs aimed at weight loss, exercise and other standard cardiovascular risk factors may have positive outcomes for these risk factors, but no evidence is available regarding the effect of such programs on the development of CHD. Social isolation after myocardial infarction (MI) is associated with an adverse prognosis. Expert consensus is that although measures to reduce social isolation are likely to produce positive psychosocial effects, it is unclear whether this would also improve CHD outcomes. Acute emotional stress may trigger MI or takotsubo ("stress") cardiomyopathy, but the absolute increase in transient risk from an individual stressor is low. Psychosocial stressors have an impact on CHD, but clinical significance and prevention require further study. Awareness of the potential for increased cardiovascular risk among populations exposed to natural disasters and other conditions of extreme stress may be useful for emergency services response planning. Wider public access to defibrillators should be available where large populations gather, such as sporting venues and airports, and as part of the response to natural and other disasters.

Combat Deployment is Associated With Sexual Harassment or Sexual Assault in a Large, Female Military Cohort

Abstract: Background: Previous studies have examined the prevalence, risk factors, and health correlates of sexual stressors in the military, but have been limited to specific subpopulations. Furthermore, little is known about sexual stressors’ occurrence and their correlates in relation to female troops deployed to the current operations in Iraq and Afghanistan. Methods: Using longitudinal data from Millennium Cohort participants, the associations of recent deployment as well as other individual and environmental factors with sexual harassment and sexual assault were assessed among U.S. female military personnel. Multivariable analyses were used to investigate the associations. Findings: Of 13,262 eligible participants, 1,362 (10.3%) reported at least one sexual stressor at follow-up. Women who deployed and reported combat experiences were significantly more likely to report sexual harassment (odds ratio [OR], 2.20; 95% confidence interval [CI], 1.84–2.64) or both sexual harassment and sexual assault (OR, 2.47; 95% CI, 1.61–3.78) compared with nondeployers. In addition, significant risk factors for sexual stressors included younger age, recent separation or divorce, service in the Marine Corps, positive screen for a baseline mental health condition, moderate/ severe life stress, and prior sexual stressor experiences. Conclusions: Although deployment itself was not associated with sexual stressors, women who both deployed and reported combat were at a significantly increased odds for sexual stressors than other female service members who did not deploy. Understanding the factors associated with sexual stressors can inform future policy and prevention efforts to eliminate sexual stressors. Copyright 2013 by the Jacobs Institute of Women’s Health. Published by Elsevier Inc.

Stress induced obesity: lessons from rodent models of stress.

Abstract: Stress is defined as the behavioral and physiological responses generated in the face of, or in anticipation of, a perceived threat. The stress response involves activation of the sympathetic nervous system and recruitment of the hypothalamic-pituitary-adrenal (HPA) axis. When an organism encounters a stressor (social, physical, etc.), these endogenous stress systems are stimulated in order to generate a fight-or-flight response, and manage the stressful situation. As such, an organism is forced to liberate energy resources in attempt to meet the energetic demands posed by the stressor. A change in the energy homeostatic balance is thus required to exploit an appropriate resource and deliver useable energy to the target muscles and tissues involved in the stress response. Acutely, this change in energy homeostasis and the liberation of energy is considered advantageous, as it is required for the survival of the organism. However, when an organism is subjected to a prolonged stressor, as is the case during chronic stress, a continuous irregularity in energy homeostasis is considered detrimental and may lead to the development of metabolic disturbances such as cardiovascular disease, type II diabetes mellitus and obesity. This concept has been studied extensively using animal models, and the neurobiological underpinnings of stress induced metabolic disorders are beginning to surface. However, different animal models of stress continue to produce divergent metabolic phenotypes wherein some animals become anorexic and loose body mass while others increase food intake and body mass and become vulnerable to the development of metabolic disturbances. It remains unclear exactly what factors associated with stress models can be used to predict the metabolic outcome of the organism. This review will explore a variety of rodent stress models and discuss the elements that influence the metabolic outcome in order to further our understanding of stress-induced obesity.