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2013

Stress

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Articles 1 - 23 of 23

Full-Text Articles in Social and Behavioral Sciences

Pilates, Mindfulness And Somatic Education, Karen Caldwell, Marianne Adams, Rebecca Quinn, Mandy Harrison, Jeffrey M. Greeson Dec 2013

Pilates, Mindfulness And Somatic Education, Karen Caldwell, Marianne Adams, Rebecca Quinn, Mandy Harrison, Jeffrey M. Greeson

Faculty Scholarship for the College of Science & Mathematics

The Pilates Method is a form of somatic education with the potential to cultivate mindfulness – a mental quality associated with overall well-being. However, controlled studies are needed to determine whether changes in mindfulness are specific to the Pilates Method or also result from other forms of exercise. This quasi-experimental study compared Pilates Method mat classes and recreational exercise classes on measures of mindfulness and well-being at the beginning, middle and end of a 15 week semester. Total mindfulness scores increased overall for the Pilates Method group but not for the exercise control group, and these increases were directly related …

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Stress And Reproductive Hormones In Grizzly Bears Reflect Nutritional Benefits And Social Consequences Of A Salmon Foraging Niche, Heather M. Bryan, Chris T. Darimont, Paul C. Paquet, Katherine E. Wynne-Edwards, Judit E. G. Smits Nov 2013

Stress And Reproductive Hormones In Grizzly Bears Reflect Nutritional Benefits And Social Consequences Of A Salmon Foraging Niche, Heather M. Bryan, Chris T. Darimont, Paul C. Paquet, Katherine E. Wynne-Edwards, Judit E. G. Smits

Physiology Collection

Physiological indicators of social and nutritional stress can provide insight into the responses of species to changes in food availability. In coastal British Columbia, Canada, grizzly bears evolved with spawning salmon as an abundant but spatially and temporally constrained food source. Recent and dramatic declines in salmon might have negative consequences on bear health and ultimately fitness. To examine broadly the chronic endocrine effects of a salmon niche, we compared cortisol, progesterone, and testosterone levels in hair from salmon-eating bears from coastal BC (n = 75) with the levels in a reference population from interior BC lacking access to salmon …

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Is Pressure Stressful? The Impact Of Pressure On The Stress Response And Category Learning, Shannon L. Mccoy, Steven B. Hutchinson, Lauren Hawthorne, Brandon J. Cosley, Shawn W. Ell Oct 2013

Is Pressure Stressful? The Impact Of Pressure On The Stress Response And Category Learning, Shannon L. Mccoy, Steven B. Hutchinson, Lauren Hawthorne, Brandon J. Cosley, Shawn W. Ell

Psychology Faculty Scholarship

We examine the basic question of whether pressure is stressful. We propose that when examining the role of stress or pressure in cognitive performance it is important to consider the type of pressure, the stress response, and the aspect of cognition assessed. In Experiment 1, outcome pressure was not experienced as stressful but did lead to impaired performance on a rule-based (RB) category learning task and not a more procedural information-integration (II) task. In Experiment 2, the addition of monitoring pressure resulted in a modest stress response to combined pressure and impairment on both tasks. Across experiments, higher stress appraisals …

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Early Exposure To Traumatic Stressors Impairs Emotional Brain Circuitry, Robert H. Paul, Mayuresh S. Korgaonkar, Cassandra Antees, Leanne M. Williams Oct 2013

Early Exposure To Traumatic Stressors Impairs Emotional Brain Circuitry, Robert H. Paul, Mayuresh S. Korgaonkar, Cassandra Antees, Leanne M. Williams

Psychology Faculty Works

Exposure to early life trauma (ELT) is known to have a profound impact on mental development, leading to a higher risk for depression and anxiety. Our aim was to use multiple structural imaging methods to systematically investigate how traumatic stressors early in life impact the emotional brain circuits, typically found impaired with clinical diagnosis of depression and anxiety, across the lifespan in an otherwise healthy cohort. MRI data and self-reported histories of ELT from 352 healthy individuals screened for no psychiatric disorders were analyzed in this study. The volume and cortical thickness of the limbic and cingulate regions were assessed …

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Feeling The Heat? Substantial Variation In Temperatures Does Not Affect The Proportion Of Males Born In Australia, Barnaby J. Dixson, John Haywood, Philip J. Lester, Diane K. Ormsby Sep 2013

Feeling The Heat? Substantial Variation In Temperatures Does Not Affect The Proportion Of Males Born In Australia, Barnaby J. Dixson, John Haywood, Philip J. Lester, Diane K. Ormsby

Human Biology Open Access Pre-Prints

The global proportion of male births has been shown to vary with climate, with a higher proportion of male births documented in colder climates. Here we examined the hypothesis that ambient temperature predicts fluctuations in the proportion of male births in Australia and within seven Australian states using historical annual data spanning 1910-2009. We predicted that within states with tropical ambient temperatures the proportion of male births would decrease when ambient temperatures are higher. Considering the national composite births for the whole of Australia first, the proportion of males born ranged only from 0.510 to 0.517. We observed no relationship …

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We Must All Work To Solve Childhood Obesity, Lisa Barkley Jun 2013

We Must All Work To Solve Childhood Obesity, Lisa Barkley

UCF Forum

Obesity is a global epidemic. It is particularly affecting our children and adolescents. This new phenomenon of having a chronic medical condition affecting such a large proportion of those under 18 years old is unprecedented.

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All Work And No Play: New Reference Librarians And Stress, Anne Larrivee Jun 2013

All Work And No Play: New Reference Librarians And Stress, Anne Larrivee

Library Scholarship

Poster presented on the stresses of new reference librarians.

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Stress, Coping, And Depression In Adolescents： A Longitudinal Analysis Of Data From National Longitudinal Study Of Adolescent Health, Xiaoyun Zhang May 2013

Stress, Coping, And Depression In Adolescents： A Longitudinal Analysis Of Data From National Longitudinal Study Of Adolescent Health, Xiaoyun Zhang

College of Education and Human Sciences: Dissertations, Theses, and Student Research

The study examined the relationships among stress, coping and depression using the public-use data from the first three waves of the National Longitudinal Study of Adolescent Health (Harris & Udry, 1994-2008). The total sample of 3844 participants aged from 11 to 27 was included in the analysis. Latent growth curve modeling was used to identify the developmental trajectories of depressive symptoms and stressful life events from age 12 to age 24, respectively; Latent growth curve modeling with two-construct parallel processes was used to examine the associations between stressful life events and depressive symptoms over time. Path analysis was used to …

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Inequality And Health: Stress Mediates The Relationship Between Subjective Ses And Wellbeing, Elizabeth L. Tull May 2013

Inequality And Health: Stress Mediates The Relationship Between Subjective Ses And Wellbeing, Elizabeth L. Tull

Honors College

Socioeconomic disadvantage is linked to a variety of health problems ranging from obesity to mental illness (Ball & Crawford, 2005; Wilkinson & Pickett, 2009). The problem lies not in the inequalities between societies, but within societies themselves (Wilkinson & Pickett, 2009). An individual’s perception of his or her socioeconomic status (SES) relative to others may be more important to their health than objective measures of SES, such as income or education. Stress associated with the perception of low status could also be linked to negative health outcomes (Adler et al., 2000). In the current research, I examined the relationship between …

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Flooring And Driving Conditions During Road Transport Influence The Behavioural Expression Of Cattle, Catherine A. Stockman, Teresa Collins, Anne L. Barnes, David Miller, Sarah L. Wickham, David T. Beatty, Dominique Blache, Françoise Wemelsfelder, Patricia A. Fleming Jan 2013

Flooring And Driving Conditions During Road Transport Influence The Behavioural Expression Of Cattle, Catherine A. Stockman, Teresa Collins, Anne L. Barnes, David Miller, Sarah L. Wickham, David T. Beatty, Dominique Blache, Françoise Wemelsfelder, Patricia A. Fleming

Sentience Collection

This study examined whether observers could distinguish between cattle that were exposed to various road transport conditions: Experiment 1 compared a manipulated flooring treatment (non-grip flooring, NG) with a control transport event (grip flooring, G) and Experiment 2 compared a manipulated driving style (stop-start driving, SS) with a control transport event of smooth, continuous (C) driving. The behavioural expression of cattle was assessed through the process of Qualitative Behavioural Assessment (QBA), and these assessments were tested for correlation with various physiological parameters. Fourteen Angus steers were assessed. Blood samples were collected immediately before and after transport, and heart rate and …

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Altered Emotional Interference Processing In The Amygdala And Insula In Women With Post-Traumatic Stress Disorder, Steven E. Bruce, Katherine R. Buchholz, Wilson J. Brown, Laura Yan Jan 2013

Altered Emotional Interference Processing In The Amygdala And Insula In Women With Post-Traumatic Stress Disorder, Steven E. Bruce, Katherine R. Buchholz, Wilson J. Brown, Laura Yan

Psychology Faculty Works

Background: Post-Traumatic Stress Disorder (PTSD) is characterized by distinct behavioral and physiological changes. Given the significant impairments related to PTSD, examination of the biological underpinnings is crucial to the development of theoretical models and improved treatments of PTSD. Methods: We used an attentional interference task using emotional distracters to test for top-down versus bottom-up dysfunction in the interaction of cognitive-control circuitry and emotion-processing circuitry. A total of 32 women with PTSD (based on an interpersonal trauma) and 21 matched controls were tested. Event-related functional magnetic resonance imaging was carried out as participants directly attended to, or attempted to ignore, fear-related …

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Seasonal Stress Physiology And Body Condition Differ Among Co-Occurring Tropical Finch Species, Kimberly L. Maute, Kristine French, Sarah Legge, Lee Astheimer Jan 2013

Seasonal Stress Physiology And Body Condition Differ Among Co-Occurring Tropical Finch Species, Kimberly L. Maute, Kristine French, Sarah Legge, Lee Astheimer

Faculty of Science, Medicine and Health - Papers: part A

Seasonal changes in avian hormonal stress responses and condition are well known for common species found at temperate and arctic latitudes, but declining and tropical species are poorly studied. This study compares stress and condition measures of co-occurring declining and non-declining tropical grass finch species in Australia. We monitored declining Gouldian finches (Erythrura gouldiae) and non-declining long-tailed and masked finches (Poepila acuticauda and P. personata) during two seasons that are potentially stressful: peak breeding (early dry season when food is plentiful) and moult (late dry to early wet season when food may be scarce). We measured body condition (muscle and …

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The Effects Of Multivitamin Supplementation On Diurnal Cortisol Secretion And Perceived Stress, David A. Camfield, Mark A. Wetherell, Andrew B. Scholey, Katherine H. M Cox, Erin Fogg, David J. White, Jerome Sarris, Marni Kras, Con Stough, Avni Sali, Andrew Pipingas Jan 2013

The Effects Of Multivitamin Supplementation On Diurnal Cortisol Secretion And Perceived Stress, David A. Camfield, Mark A. Wetherell, Andrew B. Scholey, Katherine H. M Cox, Erin Fogg, David J. White, Jerome Sarris, Marni Kras, Con Stough, Avni Sali, Andrew Pipingas

Faculty of Social Sciences - Papers (Archive)

Recent evidence suggests that dietary intake of vitamins, in particular the B-vitamins including B6, B9 and B12 may have a number of positive effects on mood and stress. Given the effects of stress on a range of biological mechanisms including the endocrine system, it could be reasonably expected that multivitamin supplementation may also affect markers of these mechanisms such as diurnal cortisol secretion. In the current double-blind placebo-controlled study 138 adults (aged 20 to 50 years) were administered a multivitamin containing B-vitamins versus placebo over a 16-week period. Salivary cortisol measurements were taken at waking, 15-min, 30-min and at bedtime, …

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Organizational Communication And Occupational Stress In Australian Catholic Primary Schools, John De Nobile, John Mccormick, Katherine Hoekman Jan 2013

Organizational Communication And Occupational Stress In Australian Catholic Primary Schools, John De Nobile, John Mccormick, Katherine Hoekman

Faculty of Social Sciences - Papers (Archive)

Purpose: This paper reports two related studies of relationships between organizational communication and occupational stress of staff members in Catholic primary schools. Design/methodology/approach: Data from both studies were obtained using survey questionnaires. Participants were staff members of Catholic diocesan primary schools in New South Wales, Australian Capital Territory and Queensland, Australia. Research hypotheses were tested using correlation and multiple regression analyses. Findings: Ten organizational communication factors and four occupational stress domains were identified. Several organizational communication variables were found to be predictors of occupational stress in four identified domains. Practical implications: The findings provide implications for school administrators in relation …

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Rectifier Capacitor Filter Stress Analysis When Subject To Regular Voltage Fluctuations, Kun Zhao, Phil Ciufo, Sarath Perera Jan 2013

Rectifier Capacitor Filter Stress Analysis When Subject To Regular Voltage Fluctuations, Kun Zhao, Phil Ciufo, Sarath Perera

Faculty of Engineering and Information Sciences - Papers: Part A

Lamp flicker levels which arise as a result of voltage fluctuations can exceed limits set by appropriate standards. New lamp types such as compact fluorescent lights (CFLs) are less sensitive to voltage fluctuations as their flicker characteristics are considerably different compared to those of the traditional incandescent lamp. These differences could support the moderation of the present voltage fluctuation and flicker standards and hence the associated limits. The potential detrimental effects on electrical equipment which may be caused by relaxation of these limits should be investigated before any changes to the present standards take place. The impact of voltage fluctuations …

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A Density- And Stress-Dependent Elasto-Plastic Model For Sands Subjected To Monotonic Undrained Torsional Shear Loading, G Chiaro, J Koseki, L. I Nalin De Silva Jan 2013

A Density- And Stress-Dependent Elasto-Plastic Model For Sands Subjected To Monotonic Undrained Torsional Shear Loading, G Chiaro, J Koseki, L. I Nalin De Silva

Faculty of Engineering and Information Sciences - Papers: Part A

A density- and stress-dependent elasto-plastic model for saturated sands undergoing monotonic undrained torsional shear loading is presented in this paper. The model is developed under an extended general hyperbolic equation (GHE) approach, in which the void ratio and stress level dependence upon stress-strain response of sand is incorporated. Most importantly, a state-dependent stress-dilatancy relationship is introduced to account for the effect of density on the stress ratio. Such a stress-dilatancy relation is used for modeling the excess pore water pressure generation in undrained shear conditions as the mirror effect of volumetric change in drained shear conditions. In this paper, details …

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Distribution Of Reynolds Shear Stress In Steady And Unsteady Flows, Ishraq Alfadhli, Shu-Qing Yang, Muttucumaru Sivakumar Jan 2013

Distribution Of Reynolds Shear Stress In Steady And Unsteady Flows, Ishraq Alfadhli, Shu-Qing Yang, Muttucumaru Sivakumar

Faculty of Engineering and Information Sciences - Papers: Part A

This study investigates the Reynolds shear stress distribution in steady and unsteady non-uniform flows. Specifically, it deals with how to express the deviation of this turbulence characteristic from that of uniform flow line; it is found that flow acceleration can well represent the deviation of Reynolds shear stress from its standard linear distribution. By connecting the flow acceleration with Reynolds shear stress, the study demonstrates empirically that the linear distrubiton of Reynolds shear stress can be observed when the flow acceleration is zero; the concave distribution of Reynolds shear stress can be observed when the flow acceleration is negative or …

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Disseminating Research In Rural Yup’Ik Communities: Challenges And Ethical Considerations In Moving From Discovery To Intervention Development In The Translational Pathway, Inna Rivkin, Joseph E. Trimble, Ellen D. S. Lopez, Samuel Johnson, Eliza Orr, James Allen Jan 2013

Disseminating Research In Rural Yup’Ik Communities: Challenges And Ethical Considerations In Moving From Discovery To Intervention Development In The Translational Pathway, Inna Rivkin, Joseph E. Trimble, Ellen D. S. Lopez, Samuel Johnson, Eliza Orr, James Allen

Psychology Faculty and Staff Publications

The native people of Alaska have experienced historical trauma and on-going rapid, often externally imposed changes in culture and lifestyle patterns. As a consequence, these populations shoulder a disproportionately high burden of psychological stress. Yup'ik communities in the Yukon Kuskokwim Delta region in Southwest Alaska have experienced epidemics and forced acculturation, contributing to behavioural health issues, including substance abuse and suicide. Cultural loss in Yup'ik communities has resulted in generational gaps that disrupt the transmission of cultural traditions and values important for well-being. Despite these intrusions, Yup'ik communities have retained cultural traditions which act as protective factors against the development …

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Brain Mechanisms Underlying The Impact Of Attachment-Related Stress On Social Cognition, Tobias Nolte, Danielle Z. Bolling, Caitlin M. Hudac, Peter Fonagy, Linda Mayes, Kevin A. Pelphrey Jan 2013

Brain Mechanisms Underlying The Impact Of Attachment-Related Stress On Social Cognition, Tobias Nolte, Danielle Z. Bolling, Caitlin M. Hudac, Peter Fonagy, Linda Mayes, Kevin A. Pelphrey

Department of Psychology: Faculty Publications

Mentalizing, in particular the successful attribution of complex mental states to others, is crucial for navigating social interactions. This ability is highly influenced by external factors within one’s daily life, such as stress. We investigated the impact of stress on the brain basis of mentalization in adults. Using a novel modification of the Reading the Mind in the Eyes Test (RMET-R) we compared the differential effects of two personalized stress induction procedures: a general stress induction (GSI) and an attachment-related stress induction (ASI). Participants performed the RMET-R at baseline and after each of the two inductions. Baseline results replicated and …

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Respite Care, Marital Quality, And Stress In Parents Of Children With Autism Spectrum Disorders, Amber Harper, Tina Taylor, James Harper, Susanne Olsen Roper, Mikle South Jan 2013

Respite Care, Marital Quality, And Stress In Parents Of Children With Autism Spectrum Disorders, Amber Harper, Tina Taylor, James Harper, Susanne Olsen Roper, Mikle South

Faculty Publications

Parents of children with autism spectrum disorders (ASD) are at risk for having higher stress and lower marital quality than other parents. Survey data regarding respite care, marital quality, and daily hassles and uplifts were obtained from 101 mother-father dyads who were together raising at least one child with ASD (total # of children = 118). Number of hours of respite care was positively related to improved marital quality for both husbands and wives, such that a one-hour increase in weekly respite care was associated with a one-half standard deviation increase in marital quality. This relationship was significantly mediated by …

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Effects Of Fouling On The Stress-Strain-Degradation Behaviour Of Rail Ballast, Buddhima Indraratna, Nayoma C. Tennakoon, Sanjay Nimbalkar, Cholachat Rujikiatkamjorn Jan 2013

Effects Of Fouling On The Stress-Strain-Degradation Behaviour Of Rail Ballast, Buddhima Indraratna, Nayoma C. Tennakoon, Sanjay Nimbalkar, Cholachat Rujikiatkamjorn

Faculty of Engineering and Information Sciences - Papers: Part A

Ballast is most commonly used as a structural component of rail track due to its high load bearing capacity, resiliency and rapid drainage. However, ballast along coal freight corridors often becomes fouled due to spilling of coal from moving wagons, in addition to further track deterioration attributed to particle breakage and pumping of soft subgrade. Highly fouled ballast needs to be cleaned or replaced to maintain the desired track resiliency, load bearing capacity and the track alignment. In order to identify the risk associated with fouling, it is important to accurately assess the amount of fouling. In this paper, the …

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Simulating The Stress And Strain Behavior Of Loess Via Scc Model, M D. Liu, J Liu, S Horpibulsuk, W Huang Jan 2013

Simulating The Stress And Strain Behavior Of Loess Via Scc Model, M D. Liu, J Liu, S Horpibulsuk, W Huang

Faculty of Engineering and Information Sciences - Papers: Part A

The behaviour of collapsible soils (loess) is studied in this paper. Simulations of the stress and strain behaviour of the soil are made via the theoretical framework of Structured Cam Clay, with the effect of glutinous ingredient in loess suggested to be modelled as cementation effect. Based on the simulations, the capacity of the model for representing the behaviour loess is investigated, and discussions on modelling the behaviour of collapsible soil in general are given.

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Stress-Strain Degradation Response Of Railway Ballast Stabilized With Geosynthetics, Buddhima Indraratna, Sanjay Nimbalkar Jan 2013

Stress-Strain Degradation Response Of Railway Ballast Stabilized With Geosynthetics, Buddhima Indraratna, Sanjay Nimbalkar

Faculty of Engineering and Information Sciences - Papers: Part A

Large cyclic loading on ballasted railroad tracks is now inevitable owing to an increased demand for freight and public transport. This leads to a progressive deterioration and densification of railroad ballast and consequently to the loss of track geometry and differential settlement. Understanding these complex stress-strain and degradation mechanisms is essential to predict the desirable track maintenance cycle, as well as the design of new track. This paper presents the results of cyclic drained tests and numerical studies carried out on a segment of model railway track supported on geosynthetically reinforced railroad ballast bed. The relative performance and effectiveness of …

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